Which enzyme catalyzes the reaction of ATP formation during chemiosmosis?
1. ATP hydrolase
2. ATP synthase
3. ATPase
4. ATP synthetase

ATP and NADPH produced during photosynthesis, are used in which of the following reactions?
1. Catabolic
2. Biosynthetic phase
3. amphibolic
4. Hydrolytic phase

Dark reaction depends upon-
1. Presence of darkness
2. Presence of light
3. Products of light reactions
4. Products of biosynthetic phase

The first dark reaction or CO2 fixation product is-
1. 3C – Organic Acid
2. 6C – Organic Acid
3. 5C – Organic Acid
4. 1C – Organic Acid

The first product of C3 and C4 cycle are:
1. PGA, PGAL
2. PGA, OAA
3. PGAL, RuBP
4. PGAL, OAA

What is the primary acceptor of CO₂ in dark reaction?
1. Ketose sugar
2. Aldose sugar
3. Fatty acid
4. Sucrose

Which of the following is not a step of photosynthesis?
1. Decarboxylation
2. Carboxylation
3. Regeneration
4. Reduction

The order of three steps of Calvin cycle is-
1. Carboxylation- Reduction-Regeneration
2. Reduction-Regeneration- Carboxylation
3. Regeneration-Carboxylation- Reduction
4. Reduction- Carboxylation –Regeneration

Calvin Pathway occurs-
1. Only C₃
2. Only C₄
3. All photosynthetic plants
4. only in C₂ plants

The most crucial step of Calvin cycle-
1. Decarboxylation
2. Carboxylation
3. Regeneration
4. Reduction