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This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
1. |
The percentage of light energy fixed in photosynthesis is around ____________ |
A. | 100% |
B. | 10% |
C. | 1% |
D. | 0.1% |
Answer» D. 0.1% | |
2. |
Who is the first person to study the influence of light during photosynthesis? |
A. | Blackmann |
B. | Van Niel |
C. | J. Ingenhouz |
D. | Warburg |
Answer» D. Warburg | |
3. |
Photosynthesis can be described as ____________ |
A. | Reductive, anabolic, endergonic process |
B. | Reductive, anabolic, exergonic process |
C. | Oxidative, anabolic, endergonic process |
D. | Oxidative, catabolic, exergonic process |
Answer» B. Reductive, anabolic, exergonic process | |
4. |
Light energy is converted to chemical energy in the presence of ____________ |
A. | Chloroplast |
B. | Ribosomes |
C. | Mitochondria |
D. | Stomata |
Answer» B. Ribosomes | |
5. |
Calvin cycle occurs in ____________ |
A. | Cytoplasm |
B. | Chloroplast |
C. | Mitochondria |
D. | Golgi body |
Answer» B. Chloroplast | |
6. |
Hydrogen is transferred from the light reaction to the dark reaction in photosynthesis by _____________ |
A. | DPN |
B. | NAD |
C. | ATP |
D. | NADP |
Answer» B. NAD | |
7. |
What are the favorable conditions for cyclic photophosphorylation? |
A. | Aerobic and optimum light |
B. | Aerobic condition only |
C. | Aerobic and low light intensity |
D. | Anaerobic and low light intensity |
Answer» B. Aerobic condition only | |
8. |
Which one of the following is the source of electrons in photosynthesis? |
A. | Carbohydrates |
B. | CO2 |
C. | Water |
D. | NADH |
Answer» D. NADH | |
9. |
THE_FIRST_PERSON_TO_STUDY_THE_INFLUENCE_OF_LIGHT_DURING_PHOTOSYNTHESIS_IS?$ |
A. | Blackmann |
B. | Van Niel |
C. | J. Ingenhouz |
D. | Warburg |
Answer» D. Warburg | |
10. |
The percentage of light energy fixed in photosynthesis is around |
A. | 100% |
B. | 10% |
C. | 1% |
D. | 0.1% |
Answer» D. 0.1% | |
11. |
Photosynthesis can be described a? |
A. | Reductive, anabolic, endergonic process |
B. | Reductive, anabolic, exergonic process |
C. | Oxidative, anabolic, endergonic process |
D. | Oxidative, catabolic, exergonic process |
Answer» B. Reductive, anabolic, exergonic process | |
12. |
Light energy is converted to chemical energy in the presence of |
A. | Chloroplast |
B. | Ribosomes |
C. | Mitochondria |
D. | Stomata |
Answer» B. Ribosomes | |
13. |
Calvin cycle occurs in |
A. | Cytoplasm |
B. | Chloroplast |
C. | Mitochondria |
D. | Golgi body |
Answer» B. Chloroplast | |
14. |
Hydrogen is transferred from the light reaction to the dark reaction in photosynthesis by |
A. | DPN |
B. | NAD |
C. | ATP |
D. | NADP |
Answer» B. NAD | |
15. |
Favorable conditions for cyclic photophosphorylation are |
A. | Aerobic and optimum light |
B. | Aerobic condition only |
C. | Aerobic and low light intensity |
D. | Anaerobic and low light intensity |
Answer» B. Aerobic condition only | |
16. |
Which of the following about Calvin cycle is correct? |
A. | It is a metabolic pathway by which plants convert CO<sub>2</sub> into pentose sugars as the main product |
B. | With decrease in light intensity, the enzymes are more reactive |
C. | Rubisco adds CO<sub>2</sub> to 3-phosphoglycerate |
D. | It is a metabolic pathway by which plants convert CO<sub>2</sub> and water into carbohydrates |
Answer» E. | |
17. |
One of the following is the source of electrons in photosynthesis |
A. | Carbohydrates |
B. | CO<sub>2</sub> |
C. | Water |
D. | NADH |
Answer» D. NADH | |
18. |
Which of the following statements about thylakoids is false? |
A. | They contain chlorophyll pigments |
B. | They contain the photosystems |
C. | They contain Calvin cycle enzymes |
D. | They contain the electron transport machinery |
Answer» D. They contain the electron transport machinery | |