Answer:
Carolus Linnaeus believed that as animals became more complex, so did their emotions.
Answer:
The correct answer will be option- Carolus Linnaeus
Explanation:
Carolus Linnaeus is known for his contribution to the classification system as well as the nomenclature system of organisms.
He also provided two classification system of the organism which classified organism into two groups- plants and animals. He classified the organisms based on the morphological characters.
He also observed the behaviour of animals and predicted that emotions of animals depend on the complexity of the organisms. He predicted that as the animals become more complex their emotions also become complex.
Thus, Carolus Linnaeus is the correct answer.
A newly discovered solar system is found 300 billion kilometers from the sun. How many AU does this represent? Show your work.
Answer:
1 AU means 1 astronomical unit or the aproximate distance from the earth to the sun
1AU=149597870.7 kiometers
1 billion=1,000,000,000
600 billion=600,000,000,000
x times 1AU=600,000,000,000
x times 149597870.7=600,000,000,000
solve for x
divide both sides by 149597870.7
x=4010.75
so aprox 4011 AU's
Natural Selection
Natural selection allows only the better alleles to be passed onto the next generation.
9.
Do you agree or disagree with the above statement? Why or why not?
State your position and provide two reasons to support your answer. Please keep your
answer under 150 words.
Natural selection does not solely allow better alleles to be passed on. It acts on individual fitness that encompasses a range of alleles, and linkage disequilibrium can cause the inheritance of linked alleles irrespective of their individual benefit.
I disagree with the statement that natural selection allows only the better alleles to be passed onto the next generation for two main reasons. First, natural selection acts on the level of the individual, not the allele. Good alleles might be lost if the individual carrying them has many disadvantageous alleles, impacting their overall fitness negatively. Second, some alleles are closely linked in the genome, leading to linkage disequilibrium, which means that these alleles can be inherited together regardless of whether they are beneficial or not.
a scientist wants his work to be published in a journal. which of the following sets of people will need to replicate the scientist's work before it can be published?
a) his fellow scientist
b) the scientist himself
c) his friends and family
d) members of political groups
Answer:
the answer is A. his fellow scientist
***if it requires two answers***
A and B
Explanation:
Answer:
A his fellow scientists
Explanation:
His fellow scientists need to confirm his work because they are his/her colleagues.
During which process of glass manufacturing does the glass become a solid without crystallizing?
*annealing,
*floating on tin,
*melting the mix or
*washing, drying, and cutting
if i recall from my lesson last week it was melting and mix
The study of chemicals and bonds is called chemistry. There is two types of elements are there and these are metals and nonmetals.
The correct answer is option C which is melting or mixing.
What is glass?Glass is a non-crystalline, often transparent amorphous solid, that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling of the molten form; some glasses such as volcanic glass are naturally occurring.
According to the question, the correct answer is option C melting the mix.
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All of the following are terms that ecologists use to describe communities except for A) species richness. B) species diversity. C) Batesian diversity. D) trophic structure. E) stability.
Answer:
Batesian diversity - C)
Which ordered pair is the best approximation of the exact solution?
Answer:0.9, 2.4)
Explanation:(0.9, 2.4)
Answer:
The correct option is C.
Explanation:
The given system of equation is
[tex]y=4x-1[/tex]
[tex]y=-3x+5[/tex]
The table of values is given. From the table:
The difference between both functions at x=0.5 is
[tex]1-3.5=-2.5[/tex]
The difference between both functions at x=0.6 is
[tex]1.4-3.2=-1.8[/tex]
The difference between both functions at x=0.7 is
[tex]1.8-2.9=-1.1[/tex]
The difference between both functions at x=0.8 is
[tex]2.2-2.6=-0.4[/tex]
The difference between both functions at x=0.9 is
[tex]2.6-2.3=0.3[/tex]
The difference between both functions at x=1 is
[tex]3-2=1[/tex]
The absolute difference between both the functions is minimum at x=0.9. So, the x-coordinate of the solution is 0.9.
The graph of both functions is shown below. Both functions intersect each other at (0.857,2.429). It means the solution of given system of equations is
[tex](0.857,2.429)\approx (0.9,2.4)[/tex]
The solution of given system of equations is (0.9,2.4). Therefore the correct option is C.
Which of the following statements about the Yellowstone National Park fires of 1988 is false? A) Secondary succession followed the fires. B) The dominant lodgepole pines required fire to complete their normal life history. C) Human environmental policy increased the severity of the fires. D) It took years before new vegetation returned to the area. E) Severe drought helped to trigger the fires.
Answer:
The answer is D
Explanation:
It took years before new vegetation returned to the area because of the fires.
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Cationic trypsinogen is an enzyme made in the pancreas that helps to digest food. It is encoded for by the PRSS1 gene. Individuals with a disorder called hereditary pancreatitis have mutations in the PRSS1gene, which result in inflammation of the pancreas, possibly leading to permanent tissue damage. The disorder is inherited in an autosomal dominant fashion. Imagine that you are part of a research team interested in determining the penetrance of a different PRSS1 mutation, Ala16Val. Your team has identified 120 individuals with the PRSS1 Ala16Valallele and found that 48 of the individuals did not display any evidence of pancreatitis. From your data, what is the penetrance of the PRSS1 Ala16Valmutation? Enter you a nswer as a whole number in the blank provided
Answer:
60%
Explanation:
Penetrance in genetics is defined as a proportion of individuals that carry a certain gene (mutation of the gene) with the expressed phenotype (trait). In the example above we wanted to know the penetrance of the PRSS1 Ala16Val mutation. Form 120 individuals, 72 of them expressed some evidence of pancreatitis (120-48). The proportion of them with the expressed trait can be calculated as 72:120=0.6 or 60%.
Question 8 0.5 pts For questions 8-10, the Y and G genes are 10 m.u. apart. From a YG/yg female, what % of chromosomes from a single meiosis (i.e. a single starting germ cell) that experienced 1 c.o. event would you expect to be recombinant? 0 0% or 50% 0 0% or 10% o 10% o 10% or 20% 10% or 50% Question 9 0.5 pts What % of chromosomes from a population of meiosis events would you expect to be recombinant? 16 15% 10% 4096 50% Question 10 0.5 pts What % of chromosomes from a population of meiosis events would you expect to be Yg recombinants? C) 5% 10% 20% 40% 50%
Answer:
hi
Explanation:
An electromanget converts electrical enegry into
an electromagnet converts electrical energy into mechanical energy.
Which of the following best describes the effect of cancer-causing mutations on the cell cycle? The mutations increase the speed of the cycle. The mutations cause the cell to bypass checkpoints in the cycle The mutations eliminate one or more stages of the cycle. The mutations interfere with S stage of the cycle. None of these.
Answer:
None of these.
Explanation:
Cancer mutations affect cell cycle regulators.
Cell cycle is a highly regulated process by the regulators that can promote cell cycle or inhibit the cycle. Genes that encode for those regulators are classified into two groups:
proto-oncogenes-encode for positive regulators such as growth factor receptor. If a cancer mutation occurs in the proto-oncogene it becomes oncogene and its product is overactivated. The increased avtivity of positive regulators leads to abnormal cell division.tumor suppresor-the products of such genes blocks the cell cycle, but after the mutation they become inactive, which leads to uncontrolled cell cycle.Why doesn't semen enter the urinary bladder during ejaculation? Why doesn't semen enter the urinary bladder during ejaculation? The smooth muscle sphincter at the base of the urinary bladder closes. There is no common duct between the reproductive system and the urinary system. Ejaculation is a parasympathetic reflex resulting in no response by urinary contraction muscles. There is no urge to urinate during sexual intercourse because of the suppression of LH by testosterone buildup in the blood.
Semen does not enter the urinary bladder during ejaculation because of the internal sphincter. The internal sphincter is a ring of muscle that surrounds the urethra, the tube that carries urine and semen out of the body.
During ejaculation, the internal sphincter contracts tightly, preventing semen from entering the bladder.
The internal sphincter is controlled by the autonomic nervous system, which is the part of the nervous system that is not under conscious control. This means that we cannot control the internal sphincter voluntarily.
The internal sphincter is also closed by the bladder neck, which is a narrowing of the urethra at the point where it joins the bladder. The bladder neck relaxes during ejaculation, allowing semen to pass through the urethra and out of the body.
If the internal sphincter or bladder neck were to relax during ejaculation, semen could enter the bladder. This is a condition called retrograde ejaculation. Retrograde ejaculation is relatively rare, but it can be caused by certain medications, surgery, or nerve damage.
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Which of the following statements is most consistent with F.E. Clements' integrated hypothesis? A) Species are distributed independently of other species. B) Communities lack discrete geographic boundaries. C) The community functions as an interactive unit. D) The composition of plant species seems to change on a continuum. E) The community is a chance assemblage of species.
Answer:
The community functions as an interactive unit - C)
All of the following describe possible results of competition between two species except A) competitive exclusion. B) aposematic coloration. C) resource partitioning. D) reduction in the population of one species. E) reduction in the populations of both species.
Answer:
B) aposematic coloration
Explanation:
The species constantly compete between each other, some because they occupy the same niche int he food chain, others even though they are in different niches tend to destroy each other, and some just avoid each other and partition the resources. This often results in partitioning of the resources between different species, when usually they are active in different parts of the day and avoid each other. Also, it is common that some of the species is more competitive, so that will result in a decline of the other species, or if the species are on the same level of competitiveness, then usually both species have declines in numbers to some optimal level. The aposematic coloration though is not part of the competition between the species. It is a type of coloration that warns the other species that the species that possesses it is either not good for eating, or it has a weapon that can harm them, thus they should avoid it and leave it alone.
An apple falls off a tree onto the ground. Which of the following best describes what eventually happens to the material that makes up the apple? A. Water softens the apple and its material dissolves into the ground. B. Sunlight decomposes the apple and recycles its material into the soil. C. Weather conditions rot the apple until all its material disappears and no longer exists. D. Microscopic organisms break down the apple and release its material into the soil and air.
Answer:
D. Microscopic organisms break down the apple and release its material into the soil and air.
Explanation:
Without microscopic organisms today, everything that has died or fallen will still remain on the ground. Fungi, bacteria, and etc. play an essential role in the Earth's ecosystem by breaking down organic material.
An apple falls off a tree onto the ground. The statement best describes reason that makes up the apple is that the microscopic organisms break down the apple and release its material into the soil and air. The correct option is D.
What are microscopic organisms?The organisms very small in size, that are not be seen by the eyes. They can be seen by using the microscopes.
The apple fall off when it has no bond with the tree. The micro-organism starts decomposing the apple from the top notch. As, the bond with the tree branch loosens, the apples fall off a tree onto the ground.
Thus, the statement best describes reason that makes up the apple is that the microscopic organisms break down the apple and release its material into the soil and air. The correct option is D.
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Why is she keeping the dead animals? Gas land movie
Answer:Explanation:
Mixture of oil and water being dumped in rivers and streams that it was not supposed to be dumped in
Against her better judgment, one woman ends herself maintaining a menagerie of dead animals killed by a polluted creek in her freezer.
What happens at the end of Gasland?Fox gets detained near the end of the film while attempting to tape a congressional hearing about the E.P.A. results in Pavilion.
But, even as the fight to safeguard the planet from radical energy development appears to be becoming increasingly difficult, Fox remains unfazed.Oil and water mixtures are being thrown in rivers and streams where they are not supposed to be deposited.
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) You treat some cells with a proteolytic enzyme that is too large to penetrate the cell membrane (Set 1). Another group of cells is made permeable before treatment with the enzyme (Set 2). A third set of cells was not treated with the enzyme at all (controls). Proteins are then extracted from the three different sets of cells and applied to an SDS-PAGE gel. Protein W migrates to the same distance on a gel of proteins from Set 1 and Set 2; Protein W migrates a shorter distance on gels of proteins extracted from the control group than on gels of proteins extracted from Set 1 and Set 2 treated cells. Protein X migrates to the same distance on a gel of proteins from control cells and the gels of the proteins from Set 1 and Set 2. Protein Y migrates a longer distance when extracted from Set 1 cells than does protein Y in the controls; Protein Y moves an even larger distance in the gel of the extracts from Set 2. Protein Z migrates the same distance on gels of proteins from the controls and the proteins extracted from Set 1, but it migrates a longer distance in extracts from Set 2 cells. Which protein is exposed only on the exterior of the cell?
Answer:
Proten W
Explanation:
SDS-PAGE gel is a method used for the separation of proteins in which proteins are separated based on their length (smaller proteins move faster through the gel, due to less resistance).
When treated with proteolytic enzymes, proteins are cut and become short fragment. This means that the fragments formed after the use of proteolytic enzymes, will move faster and thus, migrate a longer distance. Proteolytic enzymes in Set 2 cells will act only on plasma membrane proteins (because they cannot penetrate), while in Set 2 they will act on both, plasma membrane and interior proteins. Control group will have only the large fragments (not treated with enzyme).
Protein W travels the same distance on a gel of proteins from Set 1 and Set 2, but different than control group. It means that the proteolytic enzyme worked the same on Set 1 and Set 2.
Protein Y is exposed only on the exterior of the cell because it migrates further on the SDS-PAGE gel after treatment with a proteolytic enzyme that cannot penetrate the cell membrane.
Based on the experimental results, Protein Y is the one exposed only on the exterior of the cell. Its migration pattern on SDS-PAGE gels is key to this conclusion. For the untreated control group, Protein Y migrates at a certain distance indicative of a larger size/mass. When Protein Y is extracted from Set 1 cells (treated with the large proteolytic enzyme that cannot penetrate the cell membrane), it migrates a longer distance on the gel, suggesting a smaller size due to cleavage by the enzyme on the cell surface. In Set 2 cells (made permeable before enzyme treatment), Protein Y moves even further, indicating further cleavage of both extracellular and possibly intracellular portions. Protein Y has parts accessible to the enzyme when the membrane is intact, indicating those parts are extracellular.
Resource partitioning is best described by which of the following statements? A) Competitive exclusion results in the success of the superior species. B) Slight variations in niche allow similar species to coexist. C) Two species can coevolve and share the same niche. D) Species diversity is maintained by switching between prey species. E) A climax community is reached when no new niches are available.
Answer:
B
Explanation:
The division of limited resources by species to avoid competition in an ecological niche is known as resource partitioning. In this slight variations in niche allow similar species to coexist.
What is a niche?The term niche refers to the role of an organism in a community.
A species' niche includes both the physical and environmental conditions it requires as well as its interactions with other species.
Resource partitioning occurs when species divide a niche to avoid competition for resources. It include slight variations in niche allow similar species to coexist.
Thus, the correct option is B.
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Which of the following is an example of Müllerian mimicry? A) two species of unpalatable butterfly that have the same color pattern B) a day-flying hawkmoth that looks like a wasp C) a katydid whose wings look like a dead leaf D) two species of rattlesnake that both rattle their tails E) two species of moths that with wing spots that look like owl's eyes
Answer:
D) two species of rattlesnake that both rattle their tails
Explanation:
The Mullerian mimicry can simply be described as a common feature of two or more different species that can be harmful and dangerous in order to fend of predators. In this case we have the two species of rattlesnake which are using the same method to fend of any predators from, by rattling their tails. This is very useful as a defense mechanism because the species that can cause harm to them only need to encounter one of the species and then be wary of both and avoid them both, as both species use the same tactic for defense or warning, thus the chances are reducing even more that an animal, especially a young and inexperienced one, will mess with them or attack them.
Müllerian mimicry refers to when multiple harmful or unappealing species share the same warning coloration to deter predators. An example would be two species of unpalatable butterflies that have the same color pattern. This stands in contrast to Emsleyan/Mertensian mimicry, where a dangerous prey mimics a less harmful one.
Explanation:In Müllerian mimicry, multiple species that are unappealing or harmful to predators share the same warning coloration to benefit from combined deterrence. All the mimicking species actually possess defenses. An example of this from your list would be two species of unpalatable butterflies that share the same color pattern. It's a mutual reinforcement of the warning signal, making it more effective in averting predators.
Emsleyan/Mertensian mimicry, on the other hand, is where a more dangerous species mimics a less dangerous but noxious one, like a venomous coral snake mimicking a non-venomous milk snake. This is different from Müllerian mimicry, as the mimic is more harmful than the model it is imitating.
Understanding these mimics involves understanding animal behavior and predator-prey interactions, providing insight into the complex dynamics of ecosystems.
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Black hair is dominant over blonde hair. A father with black hair reproduces with a female with blonde hair. What are the chances the child will have black hair? What are the chances the child will have blonde hair? You need to answer the question by constructing Punnett square(s) and determine the resulting phenotypic percentages.
Answer: Hard to say, assumable 50/50, child will still carry recessive gene.
Explanation: Dark haired genes are dominant meaning if your child gets one piece of a gene(s) from parent Bk that is(are) dominant, they will likely have or develop dark hair as the recessive gene(s) are overpowered. This is why some children are born with blonde or light hair that develops into dark brown/black as they age.
Theoretically, Parent Bk would have to have a part of a blonde recessive gene(there are multiple genes but even one is enough) to give to a child in order for them to have blonde hair. Or, the gene(s) they receive from parent Bk malfunctions and the recessive gene(s) from parent Bd is(are) the only one(s) expressed making the kid blonde. If the father has black hair and nobody in his family or ancestry has blonde hair, then there is still a chance that the child could get blonde hair depending on the mother. Because we don’t know for sure what alleles parent Bk has, you could end up with children who all have dark hair(not explicitly black but dark) or 50/50 dark/light
The chances for the child to have black hair are 2 out of 4, or 50%. Similarly, the chances for the child to have blonde hair are also 2 out of 4, or 50%. Therefore, based on the Punnett square analysis, there is a 50% chance for the child to have black hair and a 50% chance for the child to have blonde hair.
To determine the chances of the child having black or blonde hair, we can use a Punnett square to represent the possible combinations of alleles from the parents. In this case, we'll assume that black hair is determined by a dominant allele (B), and blonde hair is determined by a recessive allele (b).
The father with black hair would have the genotype Bb, where B represents the dominant allele for black hair and b represents the recessive allele for blonde hair.
The mother with blonde hair would have the genotype bb, having two copies of the recessive allele for blonde hair.
Now, let's construct a Punnett square to determine the possible genotypes and phenotypes of the offspring:
From the Punnett square, we can see that there are four possible combinations of alleles for the child: Bb, Bb, bb, and bb.
The genotypes Bb and Bb would result in black hair, as they have at least one copy of the dominant allele (B).
The genotypes bb and bb would result in blonde hair since they have two copies of the recessive allele (b).
So, from the Punnett square, the chances for the child to have black hair are 2 out of 4, or 50%. Similarly, the chances for the child to have blonde hair are also 2 out of 4, or 50%.
Therefore, based on the given information and Punnett square analysis, there is a 50% chance for the child to have black hair and a 50% chance for the child to have blonde hair.
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Which of the following is a physiological change that is most likely to increase survival of a plant on a mountaintop near the timberline?
A.
development of polymorphic leaves
B.
reproduction through the growth of fleshy berries
C.
decreased growth
D.
development of shallow roots
Answer:
The answer is C. Decreased Growth.
Explanation:
Near the timberline of a mountain, plants will have less available carbon dioxide and oxygen, cold temperatures, and higher wind exposure. Smaller plants need less carbon dioxide and oxygen, are less affected by the wind, and need fewer nutrients.
(Explanation is from Study Island)
Answer:
c decreased growth
Explanation:
What would be the effect on blood flow if some arteries lost their elasticity?
A) no affect on blood flow
B) increased blood flow because of a more rigid structre
C) decreased blood flow due to limiting the amount of blood
D) impossible to predict the change in blood flow with these conditions
c because the elasticity of arteries allow them to expand and contain more blood in them.
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What is the dependent variable that impacts the amount of solar energy in a location. I really need help with question.
Answer: Hours or time of light exposure
Explanation: The longer exposure time, the greater the amount of solar energy transferred per unit of space. I think that make sense.
Answer:
Nearness to equator or geographical position
Explanation:
Due to Earth’s spherical shape, the sun rays with high intensity falls on the equator. Therefore if a place is located away from the equator, it will receive low intensity sun rays.
Countries like India which lie at close proximity to the equator get solar energy in sufficient amount. Such countries are able to harness electricity from solar energy due to its high intensity.
Therefore , Nearness to equator or geographical position is the dependent variable that impacts the amount of solar energy in a location.
Which of the following describes when energy is released from an ATP molecule?
When energy is released from an ATP molecule, a phosphate group is removed from the ATP molecule through a process called hydrolysis, which breaks the bond between the second and third phosphate groups.
What is ATP ?ATP (adenosine triphosphate) is a molecule that stores energy in its high-energy phosphate bonds. When energy is needed for cellular processes, the bonds between the phosphate groups are broken, releasing energy and converting ATP to ADP (adenosine diphosphate). This process of converting ATP to ADP is called hydrolysis, which involves the addition of water to the ATP molecule, breaking the bond between the second and third phosphate groups, and releasing a phosphate group and energy. The released energy can then be used for various cellular processes such as muscle contractions, active transport, and metabolic reactions.
Hence, when energy is released from an ATP molecule, a phosphate group is removed from the ATP molecule through a process called hydrolysis, which breaks the bond between the second and third phosphate groups.
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The image above is that of one hemisphere of a sheep brain which is very similar to that of a human brain. The pins are placed in 3 internal structures of the brain. Which answer choice below is INCORRECT concerning these structures?
A) The red pin is placed in the thalamus.
B) The blue pin is placed in the cerebellum.
C) The medulla oblongata is not labeled with a pin.
D) The green pin is placed in the lateral ventricle.
Answer:
B)
The blue pin is placed in the cerebellum.
Explanation:
Answer: Option B
Explanation:
The red pin is placed in the thalamus region. This region helps in sending receiving all the sensory information from the stimuli and transferring it to the cerebral cortex part of the brain for the processing of information.
The green pin lies in the region of lateral ventricle are two ventricles in the brain which contains cerebrospinal fluid which provides protection to the brain and acts as cushion of the brain.
The blue colored pin is placed in the cerebellum. It is the correct option.
Your classmate is trying to determine the rate of photosynthesis for a fern plant growing in his or her backyard. Your classmate wants to set it up in a way for it to have a high photosynthesis rate. Which of the following setups has the highest photosynthesis rate?
A. High intensity of light, low levels of carbon dioxide, high temperature level
B. Medium intensity of light, low levels of carbon dioxide, extremely high temperature level
C. Low intensity of light, medium levels of carbon dioxide, low temperature level
D. High intensity of light, high levels of carbon dioxide, moderate temperature level
Answer:
D. High intensity of light, high levels of carbon dioxide, moderate temperature level
Explanation:
Photosynthesis is the process by which plants make their own food.
photosynthesis to happen, there must be light, carbon dioxide and chlorophyll.
For the experiment to go through well, then the class mate has to provide sufficient supplies of requisite elements for photosynthesis.
Therefore enough supply of light, water, carbon dioxide and chlorophyll.
Answer:
D
Explanation:
Which of the following influences human development?
A.
environment
B.
gene expression
C.
hormones
D.
all of these
The answer would be D. :)
Final answer:
Human development is influenced by environment, gene expression, and hormones. These factors interact in complex ways to shape physical growth, psychological development, and individual traits. Recognizing the role of each factor is vital in understanding human development.
Explanation:
The question asks which of the following influences human development: environment, gene expression, hormones, or all of these. The correct answer is D. all of these. Human development is a complex process influenced by a multitude of factors.
Environment plays a crucial role in shaping an individual's physical and psychological development. For instance, a child's nutritional status, exposure to pollutants, and social interactions can significantly impact their growth and development.
Gene expression is fundamental to development, dictating how cells function and how the body grows. Variations in gene expression can lead to different physical and behavioral traits.
Hormones also significantly influence development, regulating processes such as growth, metabolism, and puberty. Hormonal imbalances can lead to developmental differences.
Understanding the interplay between these factors is key to comprehending the complex nature of human growth and development.
30. How might an ecologist test whether a species is occupying its complete fundamental niche or only a portion of it? A) Study the temperature range and humidity requirements of the species. B) Observe whether the niche size changes after the addition of nutritional resources to the habitat. C) Observe whether the niche size changes after the introduction of a similar non-native species. D) Measure the change in reproductive success when the species is subjected to environmental stress. E) Observe whether the species expands its range after the removal of a competitor.
Answer:
by observing whether the nichesize changes afterthe introduction of a similar non natives species
Explanation:
an organism that occupies it's specificed niche will these to increase in size due to the proper conditions at its niche
This is an image of the phospholipid bilayer. Based on what you know about the structure of the phospholipid bilayer, what is the name of the side labeled 1?
A. Hydrophobic side
B. Inner side
C. Hydrophilic side
D. Permeable side
I think the answer is D (permeable side )since the phospholipid bilayer is permeable and 1 shows the whole of it
Since 2is the hydrophobic side cancelling A
3 is the hydrophilic side also cancelling C
And neither is the answer B because not any of the sides shown between a and b shows that it’s in the inner side
Answer:
D. Permeable side.
Explanation:
Phospholipid bilayer constitutes a part of the structure of the cell membrane. This bilayer consists of a phosphate group and two chains of fatty acids. The phosphate group is polar and hydrophilic because of its negative charges. Its hydrophilic nature shows that it is attracted to water molecules. Also, the lipid tails constitutes the chains of fatty acids are non-polar, hydrophobic and lack ions. The hydrophobic nature of the lipid acids indicates that they repel water molecules.
From the diagram, the part labelled 1 is the phospholipid bilayer and it has a permeable side. This means it allows substances to pass through it.
Which of the following is not characteristic of smooth muscle? A) The striations are due to the orderly arrangement of actin and myosin. B) Neurons that innervate smooth muscles are under involuntary control. C) Smooth muscle cells are uninucleate. D) Smooth muscles do not contain sarcomeres. E) The thin filaments of smooth muscle fibers are attached to dense bodies.
Answer:
A) The striations are due to the orderly arrangement of actin and myosin
Explanation:
Smooth muscles are non-striated involuntary muscles which are found in the walls of stomach, urinary bladder, blood vessels...Smooth muscle tissue is composed of spindle-shaped muscle cells with single central nucleus. Like the other two type of muscles (cardiac and skeletal), smooth muscles also have four main functions:
Contractility-ability to contract. In the case of skeletal muscles it is voluntary, while in cardiac and smooth muscles it is unconscious.Excitability-ability to change membrane potential usually by the influence of nervous impulse.Extensibility-the capacity to lengthenElasticity-ability to change its length and then return to previous.The statement that is not characteristic of smooth muscle is the claim that striations are due to the orderly arrangement of actin and myosin. Smooth muscle tissue does not have a striated appearance because its actin and myosin filaments are not arranged in a regular pattern.
Explanation:The characteristic that is not true of smooth muscle is option A: The striations are due to the orderly arrangement of actin and myosin. This is because, unlike skeletal and cardiac muscles, smooth muscles do not have striations. This is due to the fact that the actin and myosin within smooth muscle fibers are not arranged in a repeating pattern, giving the muscle its uniform, nonstriated appearance. Smooth muscles are controlled involuntarily (option B), they contain a single nucleus making them uninucleate (option C), they indeed do not contain sarcomeres (option D), and the thin filaments of smooth muscle fibers are indeed attached to dense bodies (option E).
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