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OlgaM077 [116]
4 years ago
14

what cellular mechanisms allow human body cells to maintain these concentrations ?

Biology
1 answer:
sweet [91]4 years ago
4 0
Answer:


Active transport: movement against a gradient To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the proper concentrations of ions and molecules in living cells.
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how do the processes of light dependent and light independent reactions help the cell conserve energy and matter
kari74 [83]

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.

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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

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11Alexandr11 [23.1K]

Answer:ffffffggggg

Explanation:

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3 years ago
Can someone describe the main theories of intelligence​
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Answer:

The theories are grouped into four major theory types: (1) psychometric theories; (2) cognitive theories; (3) cognitive-contextual theories; and (4) biological theories.

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<h2>e) option is correct </h2>

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