by Alfonse Mcfarlane
Dive into the intricate world of cellular respiration, where cells transform nutrients into vital energy. This quiz will challenge your understanding of the stages, key molecules, and the significance of this essential biological process. Sharpen your knowledge and see how well you grasp the fundamentals of cellular respiration!
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Cellular Respiration Quiz Questions Overview
1. What is the main purpose of cellular respiration?
To produce oxygen
To generate ATP
To create glucose
To store genetic information
2. Which of the following is the first stage of cellular respiration?
Krebs cycle
Electron transport chain
Glycolysis
Fermentation
3. Where in the cell does the Krebs cycle take place?
Nucleus
Cytoplasm
Mitochondria
Ribosome
4. Which molecule is the final electron acceptor in the electron transport chain?
NADH
ATP
Oxygen
Carbon dioxide
5. How many ATP molecules are produced from one molecule of glucose during cellular respiration?
2
12
24
36-38
6. Which of the following is NOT a product of cellular respiration?
Carbon dioxide
Water
ATP
Oxygen
7. What is the role of NADH and FADH2 in cellular respiration?
They act as enzymes
They carry electrons
They store genetic information
They break down glucose
8. Which stage of cellular respiration produces the most ATP?
Glycolysis
Krebs cycle
Electron transport chain
Fermentation
9. What happens to pyruvate in the absence of oxygen?
It enters the Krebs cycle
It undergoes fermentation
It is converted to water
It becomes glucose
10. Which enzyme is responsible for ATP synthesis in the electron transport chain?
Hexokinase
ATP synthase
Phosphofructokinase
Pyruvate kinase
11. What is the net gain of ATP molecules from glycolysis?
1
2
4
6
12. Which molecule is regenerated at the end of the Krebs cycle?
Glucose
Pyruvate
Oxaloacetate
Acetyl-CoA
13. Which of the following is a byproduct of anaerobic respiration in muscles?
Ethanol
Lactic acid
Carbon dioxide
Water
14. What is the role of oxygen in cellular respiration?
To break down glucose
To carry electrons
To form water by accepting electrons
To produce carbon dioxide
We recommend that you do not leave the page that you are taking this quiz in. Stay honest 🙂
