During photorespiration, the oxygen consuming reaction(s) occur in :
1. stroma of chloroplasts and mitochondria
2. stroma of chloroplasts and peroxisomes
3. grana of chloroplasts and peroxisomes
4. stroma of chloroplasts
The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of:
1. | 1 molecule of the 3-C compound |
2. | 1 molecule of the 6-C compound |
3. | 1 molecule of a 4-C compound and 1 molecule of the 2-C compound |
4. | 2 molecules of the 3-C compound |
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 |
The correct sequence of cell organelles during photorespiration is
1. chloroplast-golgi bodies-mitochondria
2. chloroplast-rough endoplasmic reticulum-dictyosomes
3. chloroplast-peroxisome-mitochondria
4. chloroplast-vacuole-peroxisome