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Answer:it’s A

Explanation:

Answer:

Mitochondria within the electronic transport chain, are responsible for producing the energy that the cell needs, adjusting its operation to meet the metabolic needs of the body.The mitochondrion is the place where oxygen is consumed from aerobic organisms through various electron carriers and proton translocators (H +).

Explanation:

The lipid matrix of the membrane provides an impermeable barrier to ion translocation, as well as a topological organization to the catalysts in the membrane matrix that allows them to transport both e- and ions within and across the membrane in vector form. The transformation of oxidative energy into other forms of energy is carried out, initially, by generating a transmembrane electrochemical potential difference of H + ions (protomotive force). This force is the product of the asymmetric distribution of H + on both sides of the membrane, as those are translocated through it by the enzymatic complexes of the respiratory chain.The protomotive force is made up of two closely related components: one, function of the difference in chemical concentration of hydrogens across the membrane (a pH gradient) and another, dependent on the difference in electrical charge of H + ions on both sides of it (an electrical potential gradient). Gradients of electrical charge and chemical potential produce a field in which a force is exerted that tends to attract previously expelled protons into the mitochondria. It is the enzymatic complex of ATPase, the means by which the thermodynamically reversible translocation of H + ions is catalyzed. At the same time, the chemical activity of the H + on both sides of the membrane causes a change in the equilibrium constant of the enzyme, inducing it to catalyze the synthesis of ATP.

Answer:

B -Scenario 1, because chance events led to a decrease in the number of dark

Scenario 1, because chance events led to a decrease in the number of darkbeetles.

Answer:

Chromosomes

Explanation:

Multicellular organism are organisms that have more than one cells in their body. However, from the very beginning of every living organism including multicellular organisms, only ONE cell is required. In the case of multicellular organisms, this one cell undergoes division by mitosis to form other cells.

Since the cells divide by mitosis i.e 1 forms 2, 2 forms 4 etc.,. each of the cells are genetically identical to one another. Hence, this means that all the cells will contain the same number of chromosomes in their genome. For example, a dog as a multicellular organism has cells that emanate from one cell. If that one cell contain 39 chromosomes, all cells in the dog will also contain 39 chromosomes.

Answer:

true.......

Explanation:

.........

Answer: True.

Explanation: All facts mentioned are true avout plant cells...........

Answer:

do what ? i cannot see it

Explanation:

ok

Answer:whats the question

Explanation:(pls dont report me as soon as u tell me the question i will edit my answer and answer correctly)

Answer:

1.The period during which a heart chamber is contracting is called systole.

2. The period during which a heart chamber is relaxing is called diastole.

3. During ventricular contraction, the AV valves (tricuspid and mitral valves) are closed.

4. During ventricular relaxation, the AV valves are open.

5. The pulmonary and aortic valves open when the pressure in the ventricles exceeds the pressure in the pulmonary trunk and aorta.

6. The first sound of a cardiac cycle occurs when the atrioventricular valves are closing.

7. The second sound of a cardiac cycle occurs when the semilunar valves are closing.

Explanation:

We can divide the heart cycle into two parts the systole and the diastole. The systole happens when the heart walls contract, and the diastole when these relax.

The relaxation and contraction allow the flow of blood into the different heart chambers.

During diastole, blood flows to the right atrium from the vena cavae superior and inferior, and the coronary veins and to the left atrium from the pulmonary veins. The blood accumulated in the atriums causes the AV valves to open, and blood flows to the ventricles. In this part, the atrium pressure exceeds the ventricular pressure allowing the blood's flow. When the atriums contract, the remaining blood that was in them, goes to the ventricles. Throughout all this process, the pulmonary and aortic valve is closed due to a pressure difference.

During ventricular systole, there are two phases. First, the ventricles contracts themselves, and the ventricular pressure increases, being higher than the atrium pressure. As a consequence, the AV valves close. During this first phase of contraction, there is not enough pressure to open the pulmonary and aortic valves. In the second phase, the ventricles completely contract themselves, the ventricular blood pressure increases. It becomes higher than the pressure in the aortic and pulmonary valves. As a consequence, the blood pushes the valves open, and blood goes out of the heart. Then, the difference in pressure between the ventricles and the pulmonary trunk and aorta causes the valves in these areas to close.

The first sound that we listen to is the S1 and is during the ventricular contraction that closes the atrioventricular valves. The second sound is the S2, and it happens when the semilunar valves close, also knowns as aortic and pulmonary valves. S2 occurs during diastole once that the blood is out of the ventricle and the contraction has finished.

Answer:

low in modern conditions.

Explanation:

Transpiration: process in which plants release water vapor into the air.

Evaporation:   process in which water changes to a vapor.

Precipitation:   water that falls from clouds toward the ground.

Condensation: water vapor that cools down to form water droplets.

Runoff:  flowing of rainwater downhill to form streams and rivers.

To know more about water cycle here

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Answer:

This is because cell walls protect the cells and allow plants to grow to great heights.

Explanation:

Cells walls are made of a cellulose are only found in plant cells.

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Chemical polarity or only polar is a property of molecules that represents the separation of electric charges in the same molecule (see also electric dipole). ...

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Angela

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Answer:

I can't see a diagram. But if the arrow is not moving, but about to be released it would be known as potential energy.

Answer:

D. all of the above

Explanation:

i hope it helps you

Answer:

mantle core crust

Explanation:

Answer:

It's the last answer choice

Explanation:

You basically look at the chart and see if the answer choices match.

Answer:

l think it is the force of gravity

Explanation:

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The snake population will decrease. If all of the mice in an area die out, some snakes — which feed primarily on mice and other small animals — will starve unless they are able to find another food source.

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Answer:

A. The snake population will decrease

Explanation:

Because the snakes wont have much food to eat

Answer:

Dendritic cells are the most efficient antigen-presenting cells. They take up antigens and pathogens, generate MHC-peptide complexes, migrate from the sites of antigen acquisition to secondary lymphoid organs and, finally, they physically interact with and stimulate T lymphocytes. So it would most likely be inflammation.

Explanation:

Answer: Engulfment.

Explanation:

Answer:

This is the job of the excretory system. You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body. Recall that carbon dioxide travels through the blood and is transferred to the lungs where it is exhaled.

Explanation:

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Answer:

energy

Explanation:

hope  it helps.

Answer:

ATP molecules store and release energy.

Energy is released when ✔phosphate bonds are broken.

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Answer:

- Use bikes and non motor engines to get short distances BIKES is a good option.

- Support electricaly charged vehicles

- Turn off your car when you are not driving

- Walk to school if you can

- Make sure to recycle paper

- reuse old notebooks that are not finished for the next year

- Get outdoors and spread your carbon dioxide

- try playing ball games and not video games so much becasue it means you use electricity that is generated by fossil

- Turn off lights before bed

- dont keep the TV on all the time.

Explanation:

Hope that helps :)

Answer:

The movement of wind is the result of the action of one or more forces on a particle of air, fundamentally the forces of the solar radiation, pressure gradient, coriolis, friction and centrifugal are recognized.

Explanation:

Air movement is caused by differential heating of the earth's surface and the atmosphere, which presents significant variations in time and space. Wind specifically refers to the horizontal movement of air parcels (which reach great distances and can persist on different time scales)Solar radiation is absorbed by the Earth, and this process is uneven. This irregular heating is what generates the wind. Pressure Gradient Force is determined by the pressure differences between two points in the atmosphere and tends to move the parcels of air from high to low pressure centers, in order to achieve barometric equilibrium. This force is responsible for causing the initial movement of the air. The Coriolis Force is an apparent force that occurs perpendicular to the direction of movement, generating a deviation in the wind path due to the rotation of the Earth (around its axis with an angular velocity). Centrifugal Force manifests itself as a radial pushing action from the center of a circle. In the atmosphere, it occurs in high- and low-pressure systems, leading outward from high- or low-pressure centers. The Friction Force is caused by the friction of the air with the earth's surface, causing a delay in the flow of air masses and changes in the direction of movement.

Answer:

D. the answer is triangular

Answer:

1. Igneous

2. Compacting and cementation

3. Igneous

Answer:

electron

Explanation:

elections circle the nucleus

Answer:

It's the middle ear.

Explanation:

The official diagnosis is "otitis media" which translates as otitis = inflammation of the ear, and media = middle

Answer:

Their cells can specialize in certain functions

Explanation:

This because multicellular organisms are organisms that are made up of several cells which aid it's complexity and lifespan. The cells in muiticellular organisms carries out specialise function or task which give them long lifespan. This long life span is achieved because of various cells that maintain their processes, the cells forms tissues, tissues to organs, organs to system and they all perform different specialized functions.