Bio ATP

reviews ATP, photosynthesis, and light

What is the purpose of photosynthesis?

To transform light energy into chemical energy, storing it in glucose.

What are the reactants of photosynthesis?

Sunlight, carbon dioxide (CO2), and water (H2O).

What are the products of photosynthesis?

Glucose (C6H12O6) and oxygen (O2).

What are the two stages of photosynthesis?

Light reactions and dark reactions (Calvin Cycle).

Where do light reactions occur?

In the chloroplast’s thylakoid membrane.

What is produced during the light reactions?

Oxygen, NADPH, and ATP.

Where do dark reactions take place?

In the chloroplast’s stroma.

What is the role of NADPH and ATP in photosynthesis?

They power the dark reactions.

What molecules are combined during the dark reactions?

Carbon dioxide and hydrogen (H) from NADPH.

What is the chemical formula for photosynthesis?

Sunlight + CO2 + H2O → C6H12O6 + O2.

How do photosynthesis and cellular respiration interact?

They are complementary processes; the products of one are the reactants of the other.

What do photosynthesis and cellular respiration maintain in the atmosphere?

Stable levels of oxygen and carbon dioxide.

What happens to carbon dioxide during cellular respiration?

It is released into the environment.

What happens to carbon dioxide during photosynthesis?

It is pulled out of the atmosphere.

What is produced during cellular respiration?

Carbon dioxide (CO2) and water (H2O).

What do living systems do with chemical elements?

They recombine them in different ways to form different products.

What is the initial energy source for almost all biological systems?

Light.

What is produced from water in photosynthesis?

Oxygen.

What is used to make ATP in cellular respiration?

Glucose produced from photosynthesis.

Why is oxygen important in cellular respiration?

It is combined with hydrogen to produce water.

What is the primary role of light in photosynthesis?

To provide energy for the transformation of energy.

What process occurs in the chloroplasts when light is not present?

Dark reactions (Calvin Cycle).

What is recycled back into NADPH and ATP during the light reactions?

NADPH+, ADP, and a phosphate group.

How do the light reactions benefit the dark reactions in photosynthesis?

They provide the necessary energy and reducing power (NADPH and ATP).

What is the significance of the carbon cycle in relation to photosynthesis and cellular respiration?

It recycles carbon through living systems via both processes.