Answer:
True
Explanation:
We all begin existence as the simplest thing you can imagine if you're trying to picture life: a single cell--nothing, in other words, but a tiny, spherical bag of proteins. In fact, the average one-celled amoeba looks far perkier under a microscope than a fertilized human egg
in addition to exposure to germs or pathogens, what other factors influence your risk of getting an infectious disease
Answer:
Risk factors for infectious diseases:
Having a weak or compromised immune systemTaking medications such as steroids or immuno-suppressantsHaving HIV or AIDSNot being vaccinated against an infectious diseaseHaving cancer or a disorder that weakens the immune systemBeing malnourishedExplanation:
Apart from exposure to germs, certain other factors increase the risk of contracting an infectious disease.
Compromised or Suppressed Immune system:
A compromised or suppressed immune system means that your immune system cannot effectively fight against pathogens. The immune system can either be weak naturally, due to malnourishment, undernourishment or be compromised by certain disorders or medication.Immunosuppressants are drugs that suppress or inactivate the immune system. These are prescribed to patients with auto-immune disorders (a disorder in which the body's own immune system starts attacking the body's own cells and organs).HIV/AIDS
Since HIV attacks an important component, the T-helper cells of the immune system, HIV positive or AIDS individuals have a weak immune system that lowers their ability to fight diseases.Not Vaccinated:
Vaccination increases a body's capability to fight deadly infections. Un-vaccinated individuals are at a higher risk of contacting diseases.
Which scientist developed a theory that describes how light interacts with gravity?
A. Albert Einstein
B. Edwin Hubble
C. Georges Lemaitre
D. James Clerk Maxwell
Answer:
Albert Einstein
Explanation:
Albert Einstein developed a theory that describes how light interacts with gravity.
Answer: Albert Einstein
Explanation:
Reena is suffering from high fever since night. Her aunt measures her body temperature to
39°C using a celcius thermometer. But she wants to know this temperature in Fahrenheit scale
before leaving for doctor's clinic. Help her to convert this temperature on fahrenheit
Answer:
82.2 °F
Explanation:
To convert from temperature from °C to °F
You need to multply C by 9/5 then add 32
39 × 9/5 + 32 = 82.2
What does the sequence of nucleotides in DNA code for?
Discuss the law of segregation and explain why each organism has two copies of gene for each trait expressed
Answer:
The explanation is provided in the explanation section
Explanation:
Gregor Mendel, who was referred to as the FATHER OF GENETICS discovered the principles that governs heredity in his several experiments. He observed that, for a particular trait, an organism receives two copies of a gene called ALLELE. This two copies are contributed by each parent in gametes during reproduction. An allele is a contrasting form of a gene, that is responsible for a particular trait of that gene.
For example, the height gene possesses two alleles T and t, which is responsible for a tall and short trait respectively. In an organism, two copies od this height gene will be present either same or different depending on which allele is contributed by each parent. This explains why a diploid organism possesses two alleles for a specific gene.
One of the principles of heredity discovered by Mendel is the LAW OF SEGREGATION, which states that the alleles of a gene will separate into gamete during gamete formation (meiosis). Mendel stated that only one form of a gene (allele) will be found in each gamete. For example, in an organism with Tt genotype, the gametes produced by this organism will either contain T or t allele.
The Law of Segregation states that genetic traits are split during gamete formation, producing offspring with two copies of each gene, one from each parent. This is due to the fact that most organisms are diploid, having two sets of chromosomes from both parents.
Explanation:The Law of Segregation, also known as Mendel's first law, states that during the formation of reproductive cells (eggs and sperm), pairs of genetic traits are separated or segregated from each other. This means each parent contributes one copy of the gene for each trait, resulting in the offspring having two copies of the gene - one from each parent. These copies then randomly assort into gametes, maintaining genetic variation.
As to why each organism has two copies of a gene, this is attributed to the fact that organisms are diploid. A diploid organism has two sets of chromosomes, one set from the mother and one from the father, and consequently, two copies of each gene. These genes often have slight variations, leading to diversity in traits like eye color, skin color, and so on.
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Examine the soil profile and use the drop-down menu
to select what each label identifies
Label o~
Label A~
Label B~
Label C~
Answer:
Answer: label O: organic material
Label A: topsoil
Label B: subsoil
Label C: weathered rock
Explanation:
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Which of the following types of reproduction is most likely to result in a rapid growth in population?
A.
neither asexual reproduction nor sexual reproduction
B.
asexual reproduction or sexual reproduction
C.
asexual reproduction
D.
sexual reproductionWhich of the following types of reproduction is most likely to result in a rapid growth in population?
A.
neither asexual reproduction nor sexual reproduction
B.
asexual reproduction or sexual reproduction
C.
asexual reproduction
D.
sexual reproduction
Final answer:
Asexual reproduction is most likely to result in a rapid growth in population.
Explanation:
The type of reproduction that is most likely to result in a rapid growth in population is asexual reproduction. Asexual reproduction involves the production of offspring without the need for a mate, and it can occur through various methods such as binary fission, budding, or fragmentation. Since asexual reproduction does not require the time and energy needed to find a mate, it can lead to a rapid increase in population size under favorable conditions. For example, bacteria can reproduce through binary fission, where a single cell divides into two identical cells. Each of these cells can then divide again, resulting in exponential population growth.
1. Igloos are buildings that are made of packed
snow. Which statement describes the particles
that make up the igloo?
(A) The particles in the snow have no kinetic
energy
(B) The particles in the snow are not attracted to
one another.
(C) The particles in the snow have some kinetic
energy, but the particles only move around in
place.
(D) The particles in the snow melt easily because
they have more kinetic energy than liquid
water.
The particles of the snow have kinetic energy, but being a solid, it has less kinetic energy than that of liquid water. So they move around in a place about its mean position.
Option C
Explanation:Igloos are the small homes made up of snow. It used to be homes for the people living in Arctic regions in past. Now some tribes still live in these igloos, or they are made by tourists for amusements.
Snow is basically precipitation of ice from clouds. Being the solid form of water, ice has molecules more compactly arranged in its crystal structure. Thus, the molecules cannot move here and there like in fluid. But having some kinetic energy, they have certain movements i.e vibrations around its mean position.
Why is taxonomy important?
Answer:
Taxonomy is the branch of science concerned with classification (like organisms)
Explanation:
Classification is a HUGE part of science..
What is science without classification because classification is like evidence..
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explain why controlling the proteins in an organism controls the organisms characteristics
Answer:
Controlling the proteins in an organism controls the organism's characteristics because proteins are enzymes, and enzymes catalyze and regulate chemical reactions, and therefore can control certain traits such as color, shape, or even gender.
Explanation:
Controlling the proteins in an organism regulates the organism's characteristics because translation regulates the protein expression of cells based on DNA sequences and eventually the characters are expressed.
What is the importance of protein expression?In general, the cell has genetic contents that are expressed in terms of transcription and translation, and here these are called the fundamental processes of the cell as they are required by the cells for enzyme formation, synthesis of the receptors, membrane protein, and expression of the traits. If the translation is regulated, then the message present in the DNA is also regulated, and the protein expression can be controlled.
As a result, controlling the proteins in an organism regulates the organism's characteristics because translation regulates the protein expression of cells based on DNA sequences and eventually the characters are expressed.
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Heat released as the reaction occurs e. Heat stored within product molecules
b Heat stered within reactant molecules & Heat added to initiate a reaction.
7. A shadent set up four test tubes containing starch solution. Supplies included amylase lanc e de dagen
starch in humans), and an incubator. In which tube listed would starch digestion proceed most quickly
a Tube 1: No amylase, room temperature (250)
Tube 4: Amylase present, body temperature (370)
Tube 3. Amylase present, room temperature (
20)
d. Tube 2: No amylase, body temperature (370)
If we want to see the surface of a bacterium as closely as possible, which type of meroncope would be be
scanning electron microscope
e tunneling microscope
compound light microscope
d. transmission dectron microscope
9. Capillary action is the result of adhesion Which aspect of water responsible for this?
* nonpolar covalent bonds that enable water to dissolve other substances
hydrogen bonds between water and another substance
polar covalent bonds that join molecules or was to other wubstances
d otic bonds that enable electrons to flow through water and into another substance
0. Amine acids are the building blocks of which macromolecule?
protein
ONA
carbohydrate
answer to question 7 - Tube 4: Amylase present, body temperature (37ºC)
answer to question 9 - Hydrogen bonds between water and another substance
Without mitochondria, does Monocercomonoides still carry out all the basic functions of life?
Hi
As we have studied that Mitochondria is an organelle that is considered to be the power house of the cell. It is the main site where production of energy along with its supply to other organelles occur. All eukaryotic organisms contain mitochondria in their cells, however, Monocercomonoides are a newly discovered group of organisms which are eukaryotic but can happily live without the presence of mitochondria because they dont contain it in their cells.
It is believed that in Monocercomonoides, the iron-sulfur cluster assembly pathway is replaced by cytosolic sulfur mobilization system (SUF) pathway due to which the organism is able to easily carry out all its life processes. Evolutionary studies have also shown that previously these organisms had mitochondria but lost it during evolutionary processes.
Hope it helps!
Monocercomonoides is a single-celled organism that does not have mitochondria. However, it has adapted to carry out all the basic functions of life, including energy production, through a symbiotic relationship with bacteria.
Explanation:The microorganism Monocercomonoides, an example of primitive single-celled organism, is unique because it does not possess mitochondria. Despite lacking mitochondria, it still carries out all the basic functions of life. This organism has evolved a system to perform metabolic functions typically associated with mitochondria, such as energy production, through a symbiotic relationship with bacteria. It is proof that life can adapt in the absence of what is generally considered essential cellular components. So, yes, without mitochondria, Monocercomonoides does continue to perform the basic functions of life.
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upon completion of a program at a vacational school students earn an
Answer:
certificate or license
Explanation:
Vocational schools more focused on work-related competencies so it has more technical courses and shorter duration than a university degree. Compared to the universities that tend to teach broader range of subjects The skills that are taught in vocational school tend to be really specific.
You won't get degree from a vocational school. Things such as Bachelor's degree typically only given to universities students who finished their program for around 3-7 years.
Do animal or plant cells control cell activities?
Answer: Both animal and plant cells are capable of controlling cell activities.
Hope this helps! :)
Explanation:
15. A disease causing agent was isolated from a human. Under the microscope, the disease causing agent is seen to be made up of a crystal-like outside. When these structures are exposed to a stain that turns blue in the presence of DNA, the middle of the structure turns blue. In the presence of living human cells, the crystal-like objects appear to increase in mass and become more numerous. In the absence of human cells or in the presence of dead cells, no changes are observed in the mass or number of crystal-like objects. [5pt] a. Using the criteria developed in class; determine whether the object is living or nonliving. b. Justify your answer. Be sure to examine each of the criteria.
I don't know how to do this, I need help!
Answer: disease causing agent is living
Explanation:
The disease-causing agent is likely nonliving, as it requires living human cells to increase in mass and number and shows no independent metabolic activity or reproduction. Its DNA content does not necessarily qualify it as a living organism since entities like viruses also contain genetic material but are considered nonliving.
Explanation:Answering whether the disease-causing agent is living or nonliving requires us to reference the characteristics of life, which usually include the ability to reproduce, grow, respond to stimuli, have an organized structure, metabolize, maintain homeostasis, and evolve over time. In the given scenario, the agent seems to be capable of replication or increasing its mass only in the presence of living human cells, suggesting that it may lack independent metabolism and reproduction, which are key characteristics of living organisms. Therefore:
The object is likely nonliving based on our criteria.Justifying our conclusion, the agent does not exhibit independent growth or reproduction, requiring living human cells to increase in mass and number. The crystal-like agent also does not change in the absence of living cells, which indicates it does not possess metabolic processes needed for life on its own.Moving back to the class criteria, the fact that it contains DNA (as evidenced by the stain turning blue in its presence) may initially suggest some sort of genetic information typical of living organisms, however, many nonliving entities such as viruses also contain genetic material but are not considered living because they cannot exist independently without a host cell. Therefore, the DNA presence isn't enough to classify it as living without other life characteristics.
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Which increases genetic variation?
A. Natural selection
B. Genetic drift
C. Stabilizing selection
D. Mutations
Answer:
D
Explanation:
It is D because they can reorganize the chromosomes.
Mutations increase genetic variation due to changes in DNA. Therefore, option D is correct.
What are mutations?Mutations are changes in the DNA sequence that can occur spontaneously or due to exposure to environmental factors such as radiation, chemicals, or viruses. Mutations can affect a single nucleotide (a change in a single base pair), a small segment of DNA, or a larger portion of a chromosome.
Mutations can occur during DNA replication, meiosis, or exposure to mutagens. They can be beneficial, harmful, or neutral to an organism's survival and reproduction.
Some mutations can result in new genetic variations that provide an advantage in a certain environment. Other mutations can cause genetic disorders or increase the risk of certain diseases. Therefore, option D is correct.
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true or false
Protozoans are the only organisms that can convert nitrogen from the air into chemical compounds that plants can use.
If false what is it
Answer:
The above statement is false.
Explanation:
Protozoans are not the organisms that can convert nitrogen from the air into chemical compounds that plants can use.
Bacteria and archaea are organisms that can convert nitrogen from the air into chemical compounds that plants can use. Organisms which can convert nitrogen to forms that can be used by plants such as ammonia are known as diazotrophs. Examples of such kind of organisms include Rhizobia and azospirillium.
One’s natural predisposition to think and act in a certain way is one’s __________.
A.
learned habit
Answer:
It's D Temperament
Explanation:
Answer: Temperament
Explanation: 100% right. Just tested.
the term "substrate" is most commonly used to describe
a) a chemical or material in the cell
b) the building blocks that make up enzyme
c) a substance that binds to an enzyme to be synthesized or digested
d) the molecules which attach to receptor molecules on the cell membrane
In biology, a 'substrate' is a molecule that binds to an enzyme's active site and is transformed into a product through a chemical reaction. The correct answer is c) a substance that binds to an enzyme to be synthesized or digested. The process involves forming an enzyme-substrate complex where the reaction occurs.
The term substrate refers to a molecule that binds to an enzyme's active site and undergoes a chemical reaction to be converted into a product. This process typically occurs in a sequence as follows: the enzyme (E) combines with the substrate (S), forming an enzyme-substrate complex (ES); the chemical reaction occurs; and then the product (P) is released, with the enzyme itself unchanged and ready to catalyze another reaction. This makes the correct answer to the student's question:
c) a substance that binds to an enzyme to be synthesized or digested.
Enzymes act as catalysts to increase the rate of virtually all the chemical reactions within cells. They provide an active site that is specifically shaped to hold the substrate(s), creating the right conditions for the chemical reaction to occur. This is known as the lock-and-key model, where the enzyme and the substrate fit together perfectly, or the induced fit model, where binding of the substrate induces a change in enzyme shape to snugly accommodate the substrate. The enzyme-substrate complex facilitates the chemical reaction and leads to the formation of product(s), after which the substrate molecule(s) is no longer the same as it was before the reaction.
Life changes that limit one's ability to make independent choices or improve the self tend to cause stress most
for individuals in________
cultures
A. collectivistic
B. urban
C. individualistic
D. indigenous
Answer: Individualistic
Explanation:
The individualistic culture is featured by individualism in which the priority is on the individual as compared to that of the group.
Individualistic culture revolves around the self and being independent instead of being identified with a group mentality.
The self development causes stress on the other individuals because there is no such development of the group.
Give one example of a characteristic that is unique to sedimentary rocks
Answer:
a unique sedimetary rock will not crumble
Explanation:
Answer:
Sedimentary rocks have; stratification, ripple marks, cross beds, mud cracks and fossils.
Explanation:
what are the masses (in kilograms) of the three objects in the Gizmo? potential shelves gizmo answer
The masses of the objects on the Gizmo for 14 N object is 1.42 kg, 80 N object is 8.16 kg and 98 N object is 10 Kg
How do we explain?mass, in physics, is described as the quantitative measure of inertia, a fundamental property of all matter.
The masses of the objects on the Gizmo can be calculate as follows:
W= m x g
where w=
the weight,
m is the mass and
g is acceleration of gravitation
W= m x g
14N = m x 9.8
m = 14/ 9.8
m = 1.42 kg
for the 80N Object
W= m x g
80N = m x 9.8
m = 80/ 9.8
mass = 8.16 kg
for the 98N Object
W= m x g
98N = m x 9.8
mass = 98/ 9.8
mass = 10 kg
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complete question:
An object’s weight is determined by its mass (m) and the acceleration due to gravity (g) affecting that object: w = mg. On Earth, g = 9.8 m/s 2 .
What are the masses (in kilograms) of the three objects on the Gizmo? (Note: 1 N = 1 kg m/s ²). 14 N object,80 N object,98 N object.
_________ is the ability to do work and allows living things to perform all the functions necessary to live.
Answer: Energy is the ability to do work and allows living things to perform all the functions necessary to live.
Energy is the ability to do work and is vital for life functions. It comes from food and is used by the body in various ways.
Explanation:The answer to this question is Energy. Energy is the ability to do work and allows living things to perform all the functions necessary to live. For example, human bodies use energy to move, to maintain body temperature, and to allow the brain to think and process information.
Energy comes in many forms, such as heat, light, chemical, and electrical. In biology, the energy we are talking about most often is biochemical energy, which is derived from nutrients in food. Through a process called cellular respiration, your body converts the food you eat into usable energy.
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Which memory failure suggests that our memories may fade somewhat over time?
Bias
Absent-mindedness
Transience
Persistence
Answer: Transience
Explanation:
Transience refers to the general degradation of a specific memory over a period of time. The events that can be remembered are the recent events than those of the events that has occurred in the past.
This is true when it comes to episodic memory. This happens because every time the memory is re-encoded in the hippo campus.
Transience is caused because of the interference in the brain. One that does not allows the brain to retain the older information over new ones known as retroactive interference and the other is proactive interference where the older information does not allows the new information to be retained by the brain.
Answer:
Transience
Explanation:
I took the test and if you look in 02.05 it says it
If a organism has a diploid number of 44, how many
chromosomes does it have? *
Answer:
46
Explanation:
Many viruses are a protein coat surrounding
a segment of DNA. Because viruses are not
made of cells they are...
A. not considered to be living things.
B. able to reproduce very quickly.
C. better able to communicate with other viruses.
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Answer it would be the bird
Pesticide use in other countries
still represents a danger to us in
Canada. Why?
Answer:
I think it may be because of the possibility of the pesticides traveling to Canada by food and crops so it good still harm people there.
In a certain species of plant, the color purple (P) is dominant to the color white (p).
According to the Punnett Square, what is the probability of an offspring being
white?
a. 0%
b. 25%
C. 50%
d. 75%
e. 100%
The probability of an offspring being white in the given scenario, assuming heterozygous parents, is 25%, as calculated using a Punnett square.
Explanation:The probability of an offspring being white in the given plant species, where purple (P) is dominant over white (p), can be determined by creating a Punnett square. If we assume both parents are heterozygous (Bb), the Punnett square would have one quarter (bb) representing white flowers. Therefore, there is a 25% chance that an offspring will have white flowers (rr). The other three quarters would result in purple flowers because of the dominant purple allele (P), showing a 3:1 ratio of purple to white.
What effort do enzymes have on the activation energy of exergonic and endergonic reactions
Activation Energy Of Exergonic Reactions:
A. increase
B. Decrease
C. Increase
D. Decrease
Activation Energy Of Endergonic Reactions:
A. Increase
B. Decrease
C. Decrease
D. Increase
Answer:
Enzymes 'reduces the activation energy' of both Exergonic and Endergonic Reaction by acting as a catalyst.
Explanation:
For example, in the case of 'carbonic anhydrase', enzymes act rapidly causing the chemicals to 'react 107 times faster' than they would normally. Enzymes are substrate specific meaning an enzyme working on one substance may not work on another. Function of the enzyme is identified by its 'shape of the protein' and arrangement of these molecules produces an area called activation site.Enzymes lower the activation energy of both exergonic and endergonic reactions.
Explanation:In biological systems, enzymes play a crucial role in lowering the activation energy of chemical reactions. Activation energy is the energy required to start a reaction. Enzymes facilitate reactions by providing an alternative pathway with a lower activation energy, allowing the reaction to occur more easily and at a faster rate. For exergonic reactions, which release energy, enzymes can help decrease the activation energy. For endergonic reactions, which require energy input, enzymes can still lower the activation energy required for the reaction to proceed.