Photosynthesis & Cellular Respiration

Correct answers in bold

1. Which organelle is known as the powerhouse of the cell where cellular respiration primarily occurs?

A. Nucleus

B. Chloroplast

C. Mitochondria

D. Golgi apparatus

2. What is the primary function of photosynthesis?

A. To break down glucose for energy

B. To convert light energy into chemical energy

C. To produce carbon dioxide

D. To break down proteins

3. Which of these is a product of cellular respiration?

A. Glucose

B. Oxygen

C. Carbon dioxide

D. Chlorophyll

4. What pigment is essential for capturing light energy during photosynthesis?

A. Melanin

B. Chlorophyll

C. Hemoglobin

D. Carotene

5. During cellular respiration, glucose is broken down to produce:

A. ATP and water

B. ATP and carbon dioxide

C. ATP, carbon dioxide, and water

D. Only carbon dioxide

6. Which process occurs in the thylakoid membranes of chloroplasts?

A. Krebs cycle

B. Light-dependent reactions

C. Calvin cycle

D. Glycolysis

7. What is the role of oxygen in cellular respiration?

A. Final electron acceptor

B. Energy source

C. Catalyst

D. Waste product

8. The Calvin cycle takes place in which part of the chloroplast?

A. Thylakoid membrane

B. Outer membrane

C. Stroma

D. Granum

9. Which of these is NOT required for photosynthesis?

A. Water

B. Carbon dioxide

C. Oxygen

D. Sunlight

10. During which phase of cellular respiration is glucose first broken down?

A. Electron transport chain

B. Krebs cycle

C. Glycolysis

D. Oxidative phosphorylation

11. What type of organisms carry out photosynthesis?

A. Autotrophs only

B. Heterotrophs only

C. Both autotrophs and heterotrophs

D. Neither autotrophs nor heterotrophs

12. The energy currency of the cell is:

A. Glucose

B. ATP

C. NADPH

D. Oxygen

13. Which statement about cellular respiration is FALSE?

A. It occurs in all living cells

B. It produces ATP

C. It requires light energy

D. It releases carbon dioxide

14. What is the primary role of NADPH in photosynthesis?

A. Energy storage

B. Electron carrier

C. Final electron acceptor

D. Light absorption

15. During photosynthesis, oxygen is produced from:

A. Carbon dioxide

B. Glucose

C. Water

D. ATP

16. Which process occurs in both photosynthesis and cellular respiration?

A. Electron transport chain

B. Calvin cycle

C. Light-dependent reactions

D. Glycolysis

17. What happens to most of the energy released during cellular respiration?

A. Stored as ATP

B. Released as heat

 C. Converted to glucose

D. Stored in NADPH

18. The process of photosynthesis directly produces:

A. Proteins and lipids

B. Glucose and oxygen 

C. ATP and water

D. Carbon dioxide and water

19. Which of these organisms performs cellular respiration but not photosynthesis?

A. Algae

B. Animals

C. Plants

D. Cyanobacteria

20. What is the relationship between photosynthesis and cellular respiration?

A. They occur in the same organelle

B. They use the same enzymes

C. They are opposite processes

 D. They produce the same products