Answer:
Cell membrane
Explanation:
The cell membrane is selective, allowing only certain things in. A virus "tricks" the cell into letting it in by binding to cell membrane receptors and producing a false key that opens the membrane to let the virus in
How do whales survive?
Answer:
they have a skin of blubber that helps them survive.
Explanation:
Which statement best describes Mendel's experiments?
A. he began with hybrid plants
B. he controlled pollination
C. he only observed one generation
D. he used plants that reproduced slowly
Answer:
B
Explanation:
Mendel needed to control the plants' pollination, because he wanted to selectively breed the plants and observe the results.
Why not A: He began with purebreeding plants, so he could trace alleles exactly.
Why not C: He observed so many generations! It's important in an experiment to have as large a sample size as you can without being too large.
Why not D: Part of the reason he picked pea plants is because they reproduce quickly, so he could measure efficiently.
what are two different things that bind the two different ends of a tRNA molecule __________and___________
Answer: Anticodon and acceptor stem.
Explanation:
At one end of the L lies the anticodon; at the other is the acceptor stem. The L-shaped structure simply amplifies the two active ends of tRNA: the anticodon and the acceptor stem.
Anticodon and amino acid acceptor site are two different things that bind the two different ends of a tRNA molecule.
What are anticodons?Anticodons are sequences of three nucleotides in transfer RNA (tRNA) that are complementary to a specific codon in messenger RNA (mRNA). During protein synthesis, the anticodon pairs with a codon on the mRNA, thereby determining the amino acid that will be added to the growing protein chain.
The anticodon plays a critical role in ensuring that the correct amino acid is incorporated into the protein, and its proper pairing with the codon is crucial for the proper folding and function of the resulting protein. Anticodons are essential components of the translation process and are therefore important for the proper functioning of cells and organisms.
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USE PAPER TO MAKE YOUR PUNNETT SQUARE. In humans, black hair is
incompletely dominant over blond. The blend of these traits is brown hair. Write
out the genotypes to the three phenotypes in your answer. Example: Black =
Blonde =
Brown = NEXT, cross a heterozygous parent
and a blond-haired parent. Give the genotypic and phenotypic ratios of the
offspring. *
Which statement best describes an understanding of genetics that would be missing without the work of Mendel?
The DNA codes for traits would not be known.
The protein codes for traits would not be known.
Some alleles are dominant, and some alleles are recessive.
Offspring receive two copies of each allele from each parent.
Answer:
Some alleles are dominant, and some alleles are recessive.
Explanation:
For a recessive allele to generate a recessive phenotype, the individual must exhibit two copies from each parent. An individual with a dominant and one recessive allele for a gene will exhibit the dominant phenotype. A cross between a homozygous recessive and homozygous dominant will always articulate the dominant phenotype, while still exhibiting a heterozygous genotype.
compare primary and secondary succession
Answer:
primary succession occurs following an opening of a pristine habitat. and secondary succession is a response to a disturbance.
Explanation:
which planet is an inner planet and which is an outer planet
Answer:
Inner planets: Mercury, Venus, Earth, Mars
Outer planets: Jupiter, Saturn, Uranus, Neptune
Explanation:
Inner planets are planets who have an orbit that is within the asteroid belt, they are closer to the sun. Theses include Mercury, Venus, Earth, and Mars. Outer planets are planets are the gas giants, they are called gas giants because they are mainly made up of gas and liquid. These include Jupiter, Saturn, Uranus, and Neptune.
Answer:
Inner planet :-
mercuryVenusearthmarsouter planet :-
JupiterSaturnUranus NeptuneExplanation:
inner planet is made up from rock
outer planet is made up from gases
all outer planet have it own ring but only Saturn ring can be seen
well if you has any questions about astronomy you can ask me :)
What is the definition of Convection?
Question 1 options:
When heat transfers through waves.
A hot liquid or air that expands, becomes less dense, and rises or becomes more dense and sinks.
When heat transfers from objects that are touching
Heat traveling from the sun.
What kind of heat transfer happens when the sun is heating your body?
Question 2 options:
Conduction
Convection
Radiation
Density
Which of the following is an example of convection?
Question 3 options:
A hair dryer drying your hair.
When a car engine turns hot after being turned on.
When the AC or heater changes the temperature
When you are making soup and the water is rising and lowering.
Walking on the warm sand with your bare feet demonstrates this type of heat transfer.
Question 4 options:
conduction
radiation
convection
What heat transfer happnes when you burn your hand by touching a fire.
Question 5 options:
Radiation
Conduction
What heat transfer happnes when you burn your hand by touching a fire.
Question 5 options:
Radiation
Conduction
Convection
Near the ceiling of the room the air is warmer. The warm air rises because of
Question 6 options:
Conduction
radiation
convection
Answer:
1. A hot liquid or air that expands, becomes less dense, and rises or becomes more dense and sinks.
2. Radiation
3. When you are making soup and the water is rising and lowering.
4. conduction
5. Conduction
6. convection
Explanation:
1. Convection is one of the three methods of heat transfer involving the transfer of heat by the rise and fall of a fluid (liquid and gas) caused by difference in temperature. Based on this, a hot liquid or air that expands, becomes less dense, and rises or becomes more dense and sinks is a perfect definition of convection.
2. Another method of heat transfer called RADIATION involves the transfer of heat between surfaces without a contact between them. The sun heating the human body represents an example of radiation because there is no direct contact between the heat source (sun) and the heated surface (human body).
3. Making soup and the water is rising and lowering is an example of convection because it involves the rising and lowering of a liquid (soup) due to a temperature gradient.
4. Conduction is a method of heat transfer that involves the transfer of heat through a solid medium in direct contact with one another. The solid material is called the CONDUCTOR. The transfer of heat from a warm sand to the bare feet, acting as the conductor is an example of CONDUCTION.
5. Heat is transferred when one touches a fire. This represents CONDUCTION because the fire transfers the heat via a solid medium (hand) in contact with it.
6. The warm air near a room rises because there is transfer of heat, caused by a difference in temperature, through the fluid (gas) causing it to become more dense and rise.
Answer:
Explanation:
1. Heat transfers through objects it is touching
2. Radiation
3. The one about the car engine
4. Convection
5. Radiation
6. Conduction
how does molecules in the air that come into the plants leaves affect the plants mass
Answer:
The carbon comes from carbon dioxide used during photosynthesis. During photosynthesis, plantsconvert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water
Which level of ecological organization is referenced in this statement: In the clear water around the coral reef, clownfish could be seen swimming among the stinging tentacles of the sea anemone.?
A. Organism
B. Ecosystem
C. Community
D. Population
B. Ecosystem
Explanation:
An ecosystem is a community along with its abiotic (non-living) components, such as the water and air.
Therefore the answer is ecosystem
Hope that helped! Comment down below or message me if you any further questions! Good luck!
Material to diffuse is the_______variable.
Answer:
The answer is Dependent variable
Why do you think it can be difficult for scientists to determine whether an apparent relationship between species is an example of symbiosis? Use evidence from the article to support your answer.
For scientists to determine whether an apparent relationship between species is an example of symbiosis, they must visualize that both are receiving equal shares of benefits.
What would a symbiosis be?The term symbiosis, from the Greek etymons sym (together with) and bios (life), was originally used by the biological sciences to designate a close, harmonious and productive functional relationship between two organisms, which interact actively with a view to mutual benefit.
With this information, we can conclude that for scientists to determine whether an apparent relationship between species is an example of symbiosis, they must visualize that both are receiving equal shares of benefits.
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Answer:
The nature of the relationship isn’t always clear. For example, dolphins help people fish, but it’s not clear whether the dolphins respond to calls. This situation can make it difficult to determine whether the relationship is mutualistic or commensal.
Explanation:
sample
A forest has many trees and bushes that produce nuts. This is a major food source for many species, including a particular bird. Birds of this species have a variety in beak shapes ranging from long and pointy to short and hard. The birds with short and hard beaks are able to eat the nuts better than the birds with long and pointy beaks. What do you expect to happen to this population of birds over time, in terms of what you know about evolution? Address all four principles of natural selection in your explanation.
Answer: There are four principles at work in evolution—variation, inheritance, selection and time. These are considered the components of the evolutionary mechanism of natural selection. After a while the birds will get old and their beaks will get weaker, eventually they will die, when there is a shortage of food they will start harming each other in order for it, that’s selection.
Birds with short, hard beaks can eat nuts more efficiently than birds with long, pointy beaks.
The following would happen to a population of birds with short and hard beaks over time:
The rivalry( more birds than food)Birds with short beaks are more likely to survive.Birds with short beaks live longer lives and reproduce more.What is evolution?Evolution in biology is the change in a species' characteristics over several generations that is based on natural selection.
What is natural selection?Natural selection theory states that individuals who are less adapted to their environment are eliminated and those who are better adapted are selected by nature.
Principles of natural selection4 principles of natural selection are as follows:
Variation:
Individuals in all species differ in their genetic makeup, resulting in many variations in their physical features.Individuals within a population differ from one another.Inheritance:
Individuals pass on some of their genetic material to their children, and parents pass on their characteristics to their children.Selection:
Some people have inherited traits (genes) that enable them to live longer or have more children. These offspring are more likely to survive and have children of their own. As a result, their genes spread throughout the population; some variants reproduce more than others.Time:
The selection causes changes in species over time. These modifications may take days, decades, or millions of years to take effect; successful variations accumulate over time.Thus, we can conclude that the 4 principles of natural selection are variation, inheritance, selection, and time and birds with short and hard beaks will compete against each other and the most suitable will survive.
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Blue poppies native to China are grown at a plant-breeding center in California. Those with the thickest leaves survive and reproduce best in California's drier climate.
This evolutionary adaptation of the poppies to their new environment is due to __________.
a) genetic drift
b) neutral variation
c) disruptive selection
d) directional selection
e) stabilizing selection
Identify the functions of the Immune System and an organ associated with it?
Thank you!
Answer:
Below
Explanation:
- immune system is made up of organs that control the production and maturation of certain defense cells, the lymphocytes. Bone marrow and the thymus, a gland situated above the heart and behind the breast bone, are so-called primary lymphoid organs. The bone marrow produces defense cells.
Explain how traits can be affected by inheritance and the environment?
Final answer:
Traits are influenced by both genetic inheritance and environmental factors, with examples ranging from physical characteristics like height to behavioral aspects such as personality traits. While genetics provide the blueprint, environmental conditions play a crucial role in trait expression, exemplified by the coloration of Himalayan rabbits in different temperatures.
Explanation:
Traits can be influenced by both inheritance and environmental factors. Inheritance is the process through which genetic information is passed down from parents to offspring, which dictates potential traits such as eye color, height, and certain personality tendencies. However, the environment can significantly modify these traits. For example, while height has a genetic basis, factors such as nutrition can profoundly influence the ultimate stature an individual achieves. An illuminating example is the Himalayan rabbit, which develops different fur colors depending on the temperature of its environment; this demonstrates how environmental conditions can affect gene expression and result in different physical outcomes. Behavioral traits also illustrate the interaction between genes and the environment. No specific genes determine behaviors outright, but genetic predispositions can shape behavior which is then further molded by environmental exposure and experiences. For example, while personality disorders may have a genetic component, the likelihood of developing these disorders is also affected by environmental factors such as the presence of child neglect or sexual abuse. Ultimately, recognizing that genes provide the blueprint for potential traits and that the environment can either facilitate or hinder the expression of these traits is essential to understanding human development. This interaction between our genetic makeup and environmental factors contributes to the complexity of traits and is often summarized by the concept of nature through nurture instead of the traditional 'nature versus nurture' debate.
an icebergs density is less than that of the water in which it floats. true or false
Answer:true
Explanation:
Answer:
true :)
Hope this helps
An organism is made of many cells,cannot move on its own, and absorb food from its environment.what kingdom does it belong to
Answer:
Plant kingdom- Plantae
Explanation:
This would be the most logical answer since according to the description, it is a multicellular organism that absorbs food from its environment, which would be the soil,
Rheumatoid arthritis is a disease that occurs when the body's immune system starts attacking its own joint tissue. The
symptoms are pain, inflammation, and swelling in the joints. Orthopedists (doctors who study bones) and immunologists
(doctors who study the immune system) both work with patients who have rheumatoid arthritis. What is the difference between
the orthopedists and immunologists who treat the disease?
Only the orthopedists examine the symptoms.
O Only the immunologists examine the symptoms
The orthopedists focus on the joints, and the immunologists focus on the cause
The immunologists focus on the joints, and the orthopedists focus on the cause
Answer:
C) The orthopedists focus on the joints, and the immunologists focus on the cause.
Explanation:
Describe the factors that influence an individuals phenotype
Answer:
Physiology, behavior and morphology are considered as phenotype of an individual as these attributes can be observed. Example of phenotypes include wing length, hair color, skin color and height.
There are basically two factors that influence the phenotype:
(1) Genotype or Genetic information of the individual: Some of the phenotypes such as height and skin color are transmitted genetically from generation to generation. Genetic information is the transfer of genes that carry some of the specific genetic information and pass it to another generation which is visible in their phenotype.
(2) Environmental influence: As the phenotype attributes are variable so they are highly influenced by the environment or surrounding they are living. Environmental condition such as temperature, diet, humidity, oxygen levels, and the presence of mutagens affects the phenotype of an individual.
Hence, Genotype and environmental factors influence an individuals phenotype.
Which describes the notation Tt for the trait of being tall?
homozygous genotype
heterozygous genotype
homozygous phenotype
heterozygous phenotype
Answer:second one
Explanation:sorry if this wrong don’t trust me!
in the situation show below, what is the wet-bulb depression? 0.0°C 4.0°C 22.0°C 26.0°C
Answer: B
Explanation:
Wet bulb depression occurs by obtaining the difference between the wet bulb temperature and the dry bulb temperature.
26.0°C – 22.0°C = 4.0°C
Answer:
The answer is B.
Explanation:
The map shows the main streams and the rivers near City A and City B, as well as the nearby factories and farmland. The arrows in the diagram show the direction of the water flow. City A gets its water from the sunset River and City B gets its water from the Moth Lake. A liquid herbicide was applied to a farmland. Based on the information in the map shown, which city would most likely have the best water quality and why? Choose the best answer.
Select one:
City A because there are no pollution sources upstream.
City B because it is fed by two rivers instead of just one.
City B because it is next to a lake which would have more clean water available.
City A because it is farther North which means it is colder so the water is cleaner.
Answer:
A. City A because there are no pollution sources upstream.
Explanation:
Water pollution is th contamination of water. There are many means through which water is contaminated such as industrial waste, agricultural waste and domestic waste et-cetra.
City A and City B get water from sunset lake and moth lake which have factories (industrial waste) and farmland (agricultural waste) nearby them, which are responsible for the contamination of river water. due to this cities can recieve contaminated water which can affect their health.
But the quality of water in City A will be best than that of City B because according to the image, City A do not have nay upstream soooooource of pollution, as factories and farmland are located at downstream.
Hence, the correct option is A.
True of False: Salmon and Goldfish are the same species.
Answer:
False.
Explanation:
Salmon is one of several species of fish, typically of the salmoninae subfamily while goldfish is a type of small fish, carassius auratus , typically orange-colored.
Explain why you think the percentage of vegetarians in the United
States is lower than the percentage of vegetarians in India.
Answer:
India's beliefs.
Explanation:
People in India often wont eat meat because it could be a life of one of their ancestors reincarnated. For further examples look up Jainism. This is an extreme but good example. Also, people in the USA tend to be overindulgent in food if i do say so myself hahahhah!
Suppose two people experience the same painful stimulation (e.g., putting their hand in a bucket of ice water for one minute), but one feels less emotional unpleasantness than the other. Activation of which brain area probably differs between the two people?
A. Extrastriate body area (EBA)
B. Anterior cingulate cortex (ACC)
C. Prefrontal cortex
D. Primary somatosensory cortex (S1)
E. Secondary somatosensory cortex (S2)
Answer:
E
Explanation:
Which family members have red-green color blindness? Sam, Tim, Bella, and Joshua Lisa and Monica Ben, Jenny, Mike, Carol, Katie, and Chris Sam, Joshua, and Tim
Answer: Sam, Tim, Bella, and Joshua
Explanation:
The family members who have red-green color blindness are Sam, Tim, Bella, and Joshua. The correct option is a.
What is color blindness?The only form that truly embodies the phrase "color-blind" is achromatopsia, sometimes known as "total color blindness." Achromatopsia is a condition in which a person can only perceive the world in shades of gray, black, and white.
In pedigrees, the degree to which the form is entirely covered by a certain color—in this case, orange—indicates whether a person exhibits a particular trait.
On the other side, if orange dominates half of the form, the individual is an allele carrier.
A family member's shape is empty if they do not possess or carry the characteristic. Shapes for Sam, Tim, Bella, and Joshua are entirely filled in. They are therefore color-blind to red and green.
Therefore, the correct option is a. Sam, Tim, Bella, and Joshua.
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The question is incomplete. Your most probably complete question is given below:
The pedigree traces red-green color blindness. The missing image is added.
___________________is exemplified by a new starfish developing out of a single removed arm.
Answer:
Fragmentation
Explanation:
Answer:fragmentation
Explanation:QUIZLET
Some people have freckles, and some people do not have freckles. If a child has freckles, at least one parent has freckles.
However, the child may have a sibling that does not have freckles. Which statement best describes the presence of freckles?
Freckles are not determined by DNA.
There are two alleles for freckles.
There is no dominant allele for freckles.
Freckles are determined by two genes instead of by one.
Answer:
B) There are two alleles for freckles.
Explanation:
It's right on Edge 2020
B. The statement that best describes the presence of freckles is there are two alleles for freckles.
What are freckles?
Freckles are extra patches of coloring or pigment under the skin often called ephelides.
If some people have freckles, and some people do not have freckles and If a child has freckles, at least one parent has freckles.
Thus, the statement that best describes the presence of freckles is there are two alleles for freckles.
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Indica si son verdaderas (V) o falsas (F) las siguientes frases referidas a la famosa hipótesis de Oparin, razona la respuesta. La atmósfera de la Tierra primigenia era de tipo oxidante, con oxígeno, por ello pudo aparecer la vida. En la primitiva atmósfera reductora y con la energía de los rayos y la luz se formaron las primeras moléculas orgánicas. Se formaron todos los seres vivos a partir de los gases que formaban la atmósfera primitiva. A partir de los gases de la atmósfera primigenia se sintetizaron aminoácidos y otras moléculas orgánicas que dieron lugar a la sopa o caldo primitivo.
Answer:
error
Explanation: