Okay so i'm way behind and I don't really understand this. Can anyone help me here?

1. How is energy released from a molecule of ATP?

A) By adding a phosphate group to ATP

B) By combining a molecule of ATP with a molecule of ADP

C) By removing the third phosphate group from ATP

D) By lowering the activation energy of a phosphate group in ATP

2. What kind of molecule provides the most ATP when it is broken down?

A) Carbohydrate

B) Lipid

C) Protein

D) Nucleic acid

3. What term describes the process by which some organisms use chemical energy instead of light energy to make energy-storing molecules?

A) Metabolism

B) Cellular respiration

C) Photosynthesis

D) Chemosynthesis

4. How is ADP converted to ATP?

A) Three phosphate groups are added to ADP.

B) One phosphate group is removed from ADP.

C) One phosphate group is added to ADP, and energy is required.

D) One phosphate group is added to ADP, but no additional energy is required.

5. Why do organisms need to digest food?

A) Digestion breaks down food into smaller molecules that can be used to make ATP.

B) Digestion causes the conversion of ADP to ATP in the stomach.

C) Digestion breaks down carbohydrates and converts them to lipids for storing energy.

D) Digestion releases phosphate groups from proteins so they can be added to ADP.

6. Where do the light-dependent reactions take place?

A) In the cytoplasm of the cell

B) In the mitochondria of the cell

C) In the stroma of the chloroplast

D) Within and across the thylakoid membranes of the chloroplast

7. What is the role of chlorophyll in photosynthesis?

A) Chlorophyll converts ultraviolet radiation to visible light.

B) Chlorophyll absorbs green light, which is used to make carbohydrates.

C) Chlorophyll absorbs some of the energy from visible light.

D) Chlorophyll provides phosphate groups to ADP to make ATP.

8. Where do the light-independent reactions take place?

A) In the cytoplasm of the cell

B) In the mitochondria of the cell

C) In the stroma of the chloroplast

D) Within and across the thylakoid membranes of the chloroplast

9. What reactant is needed in the light-independent reactions?

A) Oxygen

B) Sunlight

C) Water

D) Carbon dioxide

10. Which molecule is made during the light-dependent reactions?

A) Oxygen

B) Water

C) Carbon dioxide

D) Glucose

11. Why are the light-independent reactions called a cycle?

A) They move around the chloroplast in a circular motion.

B) Five-carbon molecules, which start the cycle, are regenerated.

C) Five-carbon compounds break down to form three-carbon compounds.

D) Three-carbon molecules, which start the cycle, are regenerated.

12. Photosynthesis is a two-part process. What is the photo- part of the process?

A) The light-independent reactions

B) Cellular respiration

C) The calvin cycle

D) The light-dependent reactions

13. What is the function of the light-dependent reactions?

A) To fix carbon dioxide

B) To capture energy from sunlight and transfer it to energy-carrying molecules

C) To produce oxygen

D) To produce carbon dioxide

14. What is a photosystem?

A) A group of molecules that absorb energy from sunlight

B) A group of molecules that act as an electron transport chain

C) A group of molecules that make sugar from carbon dioxide

D) A group of molecules that pass hydrogen ions through atp synthase

15. Which of the following is not a function of photosynthesis?

A) It provides material for plant growth and development.

B) It releases energy by breaking down glucose.

C) It helps regulate Earth's environment.

D) It makes glucose, which stores energy for future use by plants and animals.

Thanks to anyone who answers!