Cholesterol is the precursor molecule for all steroids in the body. Cholesterol is the precursor molecule for all steroids in the body.

a. True

b. False

Answer:

What is the chemical formula of oxygen? O2

Glucoseis a simple sugar. What is the chemical formula of glucose? C6H12O6

What is the chemical formula of carbon dioxide? co2

Explanation:

Gizmo Warm-upThe Cell Energy Cycle Gizmo™ illustrates two processes that are essential to life: photosynthesisand cellular respiratio

All cells make ATP by pathways that release chemical energy from organic compounds such as glucose. 2. Cells store chemical energy as ATP to use in future reactions that require energy input.

The process by which specificity and diversity is generated among genes coding for t cell receptors (tcrs) and b cell receptors (bcrs) is: receptor diversity .

The exonuclease trimming of germline genes, V(D)J recombination, and the random insertion of non-template encoded nucleotides are basically identical procedures that are used to create the B cell receptor (BCR) and T cell receptor (TCR) repertoires.

The degree to which an immune response can distinguish between different antigenic variations is known as specificity. A straightforward method determines the relative affinity of T cell receptors or pure antibodies for various antigens.

The variety of various cell types that make up a tissue or organism is referred to as cell type diversity.

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Answer:

macroevolution

Explanation:

Answer:

C) To produce sugars

Explanation:

Through photosynthesis, plants convert carbon dioxide and water into sugar.

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The likelihood that the first two offspring of the cross will have congenital analgesia would be 1/16

For autosomal recessive traits, two recessive alleles are needed for the trait to manifest while one recessive allele means heterozygosity.

In this case, let us assume that congenital analgesia is represented by the allele b; heterozygous individuals will, thus, be Bb.

            Bb    x    Bb

          BB   Bb   Bb   bb

Probability of producing unaffected offspring = 3/4

Probability of producing affected offspring = 1/4

Likelihood of the first two offspring having congenital analgesia = probability of first having congenital analgesia and the second having congenital analgesia

    = 1/4 x 1/4

        = 1/16

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Proteomics and genomics are topics that interact frequently. The primary distinction between genomics and proteomics is that the former studies the whole set of genes in a cell's genome, while the latter studies the entire set of proteins the cell produces.

Through the genetic code, the nucleotide sequence of a gene dictates the amino acid sequence of a protein. In order to make the appropriate proteins, mRNA is translated from genes into mRNA The total expressed proteins in an organism are represented by the proteome. Proteomics refers to the field of research that identifies the traits, structures, functions, and expressions of every protein in a cell.

Understanding the structure, function, location, and regulation of an organism's genes requires genomic studies. Since proteins are the actual functional molecules in cells and represent true physiological conditions, proteomics investigations are more advantageous.

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The voltage across an 8.00 nm–thick membrane if the electric field strength across it is 5.50 MV/m is 44.0 mV.

To calculate the voltage across an 8.00 nm–thick membrane if the electric field strength across it is 5.50 MV/m, we know that

The formula to calculate voltage is:

Voltage, V = Ed

Here, the electric field is uniform. So, the formula holds true.

Substitute the given values in the above formula, and we get:

V = Ed

= 5.50 MV/m × 8.00 × 10⁻⁹ m

= 44.0 mV

Therefore, the 8.00 nm–thick membrane voltage is 44.0 mV.

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It is true that placental mammals give birth to more fully developed offspring than marsupial mammals and therefore have a greater chance of offspring survival. This helps to explain why placental mammals from North America displaced many native South American marsupial mammals when a land bridge formed between the two continents.

Therian mammals called placental mammals have developing placentas during pregnancy. The foetus is fed by the placenta as it develops inside the mother's uterus. Mammals with placenta give birth to children that are generally mature and large. Mammals that carry babies are the majority.

Hence, placental mammals give birth to more fully developed offspring than marsupial mammals and therefore have a greater chance of offspring survival.

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The usual symptoms of radiation exposure are: nausea, vomiting, headache and diarrhea.

Radiation exposure is the exposure of living body to a high amount of penetrating radiation for a short period of time. This causes an acute illness in the body also called acute radiation syndrome. The initial symptoms are usually mild and can be treated effectively however the condition can worsen if not treated correctly and timely.

Diarrhea is The loose and watery movement of bowel. It can be present alone or be accompanied by other symptoms like nausea, weakness, etc. Diarrhea may happen due to varying reasons like bacterial infection, contaminated food, etc.

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Answer:

D

Explanation:

Answer:

A

Explanation:

I took the test. And I pay attention. Truuuuust meeeeee. But, if you so happen to have unfortunetly got it wrong. Tell me, so I can proceed to help others widely across the platform.

Answer:

pretty sure its C

Explanation:

because of the valence electrons

La biodiversidad es esencial para la vida y los seres humanos dependen de ella. Nosotros utilizamos elementos de la biodiversidad en nuestra vida diaria para la alimentación, medicina y construcción, entre otros.

The answer is: a term used to indicate species or higher level groups, such as genera or families, is Taxon.

Answer:

what are we supost to do

Explanation:

Answer:

This is due to evaporation. When you get out of the swimming pool, the water is evaporating from your skin. This process is takes a lot of energy, and it takes that energy in the form of heat from your body.

Diffusion is a passive process that does not require energy. This is why the movement of molecules occurs from an area of high concentration to an area of low concentration. In the case of solute particles, they move until they are uniformly distributed within the solvent.

During the process of diffusion, solute particles will generally move from an area of high solute concentration, to an area of low solute concentration. This happens because the random motion of particles suspended in a fluid results in their uniform distribution .

Diffusion happens due to the kinetic energy that causes a random motion of molecules. When a molecule collides with another molecule or the wall of the container it is in, the kinetic energy of the molecule is transferred to the molecules it collides with, causing them to move in different directions.

Diffusion can occur in a variety of mediums, including gases, liquids, and solids. It plays a significant role in various biological processes. For example, it helps transport nutrients and oxygen to cells and allows for the excretion of waste products. Diffusion is a passive process that does not require energy.

This is why the movement of molecules occurs from an area of high concentration to an area of low concentration. In the case of solute particles, they move until they are uniformly distributed within the solvent.

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During the process of diffusion: "The random motion of particles suspended in a fluid results in their uniform distribution."

During the process of diffusion, solute atoms move from an area of extreme solute aggregation to an extent of low solute aggregation. This motion happens due to the chance motion of atoms postponed in a fluid.

As solute particles are changeable motion, they bang into each one and with the firm atoms, generating them to open and enhance evenly distributed. This process persists as far as the solute pieces are evenly delivered inside the stable.

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When a virus invades a cell and rapidly produces antisense RNA that is complementary to a gene’s promoter sequence, the transcription will be blocked or inhibited.

The production of antisense RNA complementary to the promoter sequence of a gene is known as transcriptional gene silencing or TGS, which can cause a reduction in the expression of a particular gene or block the transcription of the gene completely.

Antisense RNA binds to the sense strand of the mRNA molecule, which prevents the formation of ribosomal binding sites and protein synthesis. In the case of a viral infection, the virus can use TGS to prevent the expression of host genes that are necessary for the immune response and other antiviral defense mechanisms. This helps the virus to evade the host's immune response and replicate itself.

Hence, the transcription of the gene will be blocked or inhibited.

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Some of the energy of the system is lost due to friction and converted to heat energy.

We know that from the first law of thermodynamics, energy can not be created nor destroyed rather the energy can be converted from one form to the other. In this case, we know that the energy that is possessed by the cart and the box as they move down the track is kinetic energy.

However, there is friction between the floor of the track and the cart and the box. When this occurs, there is a loose of some of energy of the cart and the box as heat in accordance to the first law of thermodynamics.

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Answer: The option that is NOT true is:

C. Its primary fuel is fat.

Explanation:

Anaerobic metabolism does not primarily rely on fat as its fuel source.

The correct answer is Option (c)

Option (c) Its primary fuel is fat, which is NOT true of anaerobic metabolism.

Let's delve into the topic by breaking down the words anaerobic, which gives us an-aerobic.

Aerobic refers to anything, which involves the presence of air, or more specifically oxygen. Thus any aerobic activity would involve the presence and usage of oxygen for its necessary functions.

Anaerobic would thus mean any activity which doesn't require the presence of oxygen.

Anaerobic metabolism defines the process by which cells, without the presence of oxygen, produce energy for their work. When the supply of oxygen is limited, cells opt for this alternative pathway to produce energy to keep themselves running.

Here, the breakdown of glucose occurs even in limited oxygen to give us ATPs (Adenosine Triphosphate), the energy currency of the cell.

Coming back to the question, we go through the options one by one.

During high-intensity activities like sprinting or heavy exercise, your lungs don't work fast enough to provide the body with enough air. Thus the glucose gets decomposed without the presence of oxygen to give the body the energy it needs through anaerobic respiration.

Thus, option A is correct.

Anaerobic respiration or metabolism occurs in the fluid part of the cell known as the cytosol, due to the availability of a suitable environment for chemical reactions.

Thus option B is correct.

Anaerobic metabolism doesn't require oxygen, as discussed before.

Thus option D is correct.

But, the primary source of fuel for running anaerobic chemical reactions is not fat, but glucose which breaks down to give ATP.

Thus, option C is incorrect.

Thus, the answer to the question is option C.

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Answer:

7. Gene

8. Genetics

........................................

Answer:

It falls toward earth if speed decreases.

Explanation:

If the speed of satellite was reduced by half, it fall towards the earth because it is attracted by the earth with the help of gravitational force while on the other hand, if the speed of satellite increased by double, it will go into the space because the gravitational force of earth does not keep it in the orbit due to its higher speed so we can say that speed of satellite has a great effect on satellite motion.

Unfortunately, it is not possible to travel to Venus at the speed of light because nothing can travel faster than the speed of light, which is approximately 186,282 miles per second or 299,792 kilometers per second.

However, if we assume that it were possible to travel at the speed of light, it would take approximately 6 minutes and 30 seconds to reach Venus from Earth, which is about 162 million miles (261 million kilometers) away.

Astronomical units (AU) are the most common method of measuring distances in the Solar System. It is the average distance from the Sun to Earth, which is roughly 93 million miles (150 million kilometers).

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If the electromagnetic waves has a frequency of 10^16, then you are detecting ultraviolet rays.

We know that a wave is a disturbance along a medium that transmits energy. Waves could be classified based on the means by which they are transferred. In this case, we have the mechanical waves and the electromagnetic waves.

The mechanical waves do require  a medium for propagation such as the sound wave while the electromagnetic wave do not require a material medium for propagation such as the radio waves.

The electromagnetic spectrum have been shown in the image attached to the question. If the electromagnetic waves has a frequency of 10^16, then you are detecting ultraviolet rays.

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Answer:C. melted rock from earths mantle rises between two tectonic plates

Explanation: got it right on ap3x

The answer is C!

(C) Melted rock from earth's mantle rises between two tectonic plates.

Answer:

1.pulmonary veins. 2.spleen...

3.antibody 4.systole. 5.haem

Explanation: 1. Veins generally has the role carrying deoxygeneted blood but in our body we have one vein that carries oxygeneted blood ,the important fact to remember is veins take blood into the body .So the vein that carry oxygeneted blood will also carry blood into the heart from lungs and the opening of heart is the left auricle.

2. Spleen is the lymphatic organ close to armpit which helps in defence to body and produces lymph

3.antibody - antibodies are produced by cells of WBC against foreign entity called antigen.

4.systole- the stage of contracted heart is systole and relaxed heart is diastole.

5.heam - the answer is haem because haem means iron and iron imparts redness to blood plasma ,and with globin it form haemoglobin.

Answer:

That is the definition of a hypothesis.

Explanation:

Answer:

they may struggle to survive

Answer:

DNA

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