1st Year Biology Chapter 4 Test04. Bioenergetics

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. The Calvin cycle is also called
   1. C3 pathway
   2. C4 pathway
   3. CAM pathway
   4. Krebs cycle
2. The first step of glycolysis is best described as
   1. Oxidation
   2. Phosphorylation of glucose
   3. Hydrolysis of ATP to ADP without phosphorylation
   4. Decarboxylation
3. The main accessory pigment is:
   1. Chlorophyll-b
   2. Chlorophyll-a
   3. Cytochrome
   4. RuBP
4. ATP is synthesized in the ETC primarily by
   1. Substrate-level phosphorylation
   2. Direct oxidative reactions
   3. Photophosphorylation
   4. Chemiosmosis via ATP synthase
5. In C 3 plants first stable product of photosynthesis during dark reaction is:
   1. PGA
   2. GJP
   3. RuBP
   4. Oxaloacetate
6. Water acts as a _______ agent during photosynthesis.
   1. Catalytic
   2. Oxidizing
   3. Neutral
   4. Reducing
7. The C₄ pathway is also known as
   1. Hatch-Slack cycle
   2. Calvin cycle
   3. Krebs cycle
   4. Glycolytic pathway
8. Photorespiration occurs in
   1. Ribosomes
   2. Nucleus and chloroplast
   3. Cytoplasm only
   4. Chloroplast
9. Photorespiration takes place only in:
   1. Root
   2. Mitochondria
   3. Green parts of the plant
   4. All cells of the plant
10. A typical P/O ratio attributed in textbooks to FADH₂ in the ETC is
    1. 1 ATP
    2. 2 ATP
    3. 3 ATP
    4. 4 ATP