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velikii [3]
3 years ago
5

Which conditions are possible reasons for declining genetic diversity of a species.

Biology
1 answer:
Natali5045456 [20]3 years ago
8 0

Answer:

Explanation:

loss of habitat

inbreeding

environmental changes

widespread distribution

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how do the processes of light dependent and light independent reactions help the cell conserve energy and matter
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The alternation of processes help the cell conserve energy and matter. Light-dependent reactions produce ATP and NADPH, which used during Light-independent reactions to produce carbohydrates.

<h3>What are the final products of light-dependent and light-independent reactions?</h3>

Photosynthesis involves two stages: light-dependent and light-independent reactions.

  • Light-dependent reactions occur in the thylakoids.

During these, oxygen is released, while ATP and NADPH are produced. Both of them are used during light-independent reactions.

Photosynthetic pigments are in charge of light absorption.

When sunlight reaches the pigments, electrons get excited and move along the electron transport chain, placed in the thylakoid membrane.

As electrons get exhited, new electrons provided by water molecules replace the excited ones.

The final products are oxygen, ATP, and NADPH.

  • Light-independent reaction is known as the Calvin cycle, and it takes place in the stroma.

During the Calvin cycle, sugars or carbohydrates are synthesized.

When carbón dioxide, CO₂, enters the leaves through stomas, it diffuses to the chloroplast stroma.

Carbon atoms fixate, meaning that they incorporate into organic molecules. These molecules are used to produce 3-C sugars.

The whole process is impulsed by ATP and NADPH coming from light-dependent reactions.  

The alternation of the processes of light-dependent and light-independent reactions help the cell conserve energy and matter.

Plants takes solar energy and produce ATP and NADPH. When there is no available solar energy, the plant uses these molecules to produce carbohydrates.

You will learn more about light-dependent and light-independent reactions at

brainly.com/question/13585021

brainly.com/question/4004688

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3 0
2 years ago
Compare the movement of oxygen and carbon dioxide across the cell membrane. (4 marks)
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Molecules naturally disperse from areas of higher concentration to lower concentration.

As oxygen-rich (and carbon dioxide-poor) blood travels by a cell the oxygen diffuses through the cell membrane to the area of lower concentration inside the cell. It can do this easily because the oxygen molecule (O2) is very small and has no charge or polarity. The oxygen is used up rapidly by mitochondria. This rapid consumption causes oxygen to constantly move into the cell from the blood.

The mitochondria creates carbon dioxide (CO2) as a waste product of cellular respiration (the process that makes energy for your body). Because the CO2 is of a higher concentration in the cell than in the blood passing by, this gas continually diffuses out of the cell. It too is small and uncharged so it can pass through cell membranes easily.

These movements require no energy (in the form of ATP) on behalf of the cell.

Explanation:

3 0
3 years ago
Other planets have an atmosphere, but Earth's is unique because it has large amounts of_
Romashka-Z-Leto [24]

Answer:

Oxygen

Explanation:

Earth's atmosphere is unique because it has large amounts of <em>oxygen</em><em> </em>

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