- 1(current)
Q. No.Which is the first CO2 acceptor enzyme in C4 plants:
1. RuDP Carboxylase
2. Phosphoric acid
3. RUBISCO
4. PEP-Carboxylase
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
89%
Level 1: 80%+
AIPMT - 2000
Hints
Which pair is wrong:
| 1. | C3 – Maize |
| 2. | C4 – Kranz anatomy |
| 3. | Calvin cycle - PGA |
| 4. | Hatch and Slack cycle – O.A.A |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
88%
Level 1: 80%+
AIPMT - 2001
Hints
In the sugarcane plant, 14CO2 is fixed in malic acid because the enzyme that fixes CO2 is:
| 1. | Ribulose biphosphate carboxylase |
| 2. | Phosphoenol pyruvic acid carboxylase |
| 3. | Ribulose phosphate kinase |
| 4. | Fructose phosphatase |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
77%
Level 2: 60%+
AIPMT - 2003
Hints
As compared to a -plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by -plants:
| 1. | Zero | 2. | Six |
| 3. | Two | 4. | Twelve |
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) |
50%
Level 3: 35%-60%
AIPMT - 2005
Hints
Photosynthesis in C4 plants is relatively less limited by atmospheric levels because:
| 1. | The primary fixation of CO2 is mediated via PEP carboxylase |
| 2. | Effective pumping of CO2 into bundle sheath cells |
| 3. | Four carbon acids are the primary initial CO2 fixation products |
| 4. | RuBisCO in C4 plants has a higher affinity for CO2 |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
Level 3: 35%-60%
AIPMT - 2005
Hints
- 1(current)
Q. No.
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