catalyzes the reduction of two molecules of PGAL to form glucose.
a and b but not c
initiates photorespiration when the CO2/O2 ratio is low.
catalyzes the carboxylation of CO2 to ribulose 1, 5-bisphosphate
Q. The property of RuBisCO which is responsible for photorespiration in C3-plants is its activity as
Q. Photosynthesis in C4-plants is relatively less limited by atmospheric CO2 levels because
- Four carbon acids are the primary initial CO2 fixation products.
- Effective pumping of CO2 in to bundle sheath cells.
- RuBisCO in C4 -plants has higher affinity for CO2.
- The primary fixation of CO2 is mediated via PEP carboxylase.
Q. RuBisco has active site that can bind carbon dioxide and
Q. The first reaction in photorespiration is _____.
Q. The correct sequence of cell organelles during photorespiration is:
- Chloroplast, golgi bodies, mitochondria
- Chloroplast, rough endoplasmic reticulum, dictyosomes
- Chloroplast, mitochondria, peroxisome
- Chloroplast, vacuole, peroxisome
Q. Which one of the following is wrong in relation to photorespiration?
- It occurs in daytime only
- It is a characteristic of C3 plants
- It occurs in chloroplasts
- It is a characteristic of C4 plants
Q. During photorespiration the oxygen consuming reaction (s) occur in:
- Grana of chloroplasts and peroxisomes
- Stroma of chloroplasts and peroxisomes
- Stroma of chloroplasts
- Stroma of chloroplasts and mitochondria
The amino acids produced during the Glycolate pathway of photorespiration are
Serine and glycine
Glycine and tryptophan
Serine and tryptophan
Glycine and alanine
RUBISCO enzyme is also called as