1. Direct oxidation of photo respiratory peroxides in plants is carried out by- (1) Superoxide Dismutase (2) Glutathione Synthase (3) Catalase (4) Glutathione reductase Introduction Plants produce reactive oxygen species […]
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CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
Plant Cell Wall Components and Functions
83. The following statements are made regarding a plant cell: A. Polysaccharides of various sugars with methyl esters of galacturonic acid are generically referred as chitin. B. Suberin and cutin […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
Substrates and Products of Sucrose-Phosphate Synthase and Sucrose-Phosphate Phosphatase Enzymes
82. Sucrose-phosphate synthase (SPS) and sucrose-phosphate phosphatase (SPP) are two key enzymes involved in the biosynthesis of sucrose. Following are certain statements regarding these two enzymes: A. Fructose-6-phosphate is one […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
Sucrose Phosphate Synthase enzyme
81. Which one of the following correctly states the action of sucrose phosphate synthase enzyme? (1) UDP-glucose and Fructose-6-phosphate are used as substrates. (2) UDP-glucose and Fructose-6-phosphate are the products […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
Energy and Site Requirements for Sucrose and Starch Synthesis in Photosynthesis
The following statements were made regarding photosynthesis: A. Conversion of 3-phosphoglycerate into glyceraldehyde-3-phosphate is a reduction process which utilizes ATP as well as NADH in Calvin cycle B. Conversion of […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
The Central Calvin Cycle Metabolite Linking Starch Synthesis and Cytosolic Transport
79. Which one of the following metabolites formed during Calvin-Benson cycle in chloroplast is involved in starch biosynthesis and can also be transported to cytosol? (1) Triose phosphate (2) Glyceraldehyde-3 […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
High 3-Phosphoglycerate Drives Triose Phosphate Accumulation and Starch Synthesis in Chloroplasts
78. The following statements were made with the assumption that the concentration of 3 phosphoglycerate is high inside chloroplasts of an actively photosynthesizing leaf. A. There will be high concentration […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
Daytime Role of Triose Phosphate in Starch and Sucrose Synthesis
From the following statements: (A) Triose phosphate is utilized for the synthesis of both starch and sucrose. (B) Triose phosphate is translocated to cytosol from chloroplast. (C) Triose phosphate is […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
Photosynthetically formed triose-phosphate to sucrose
76. Following are some enzyme-substrate combinations involved in the conversion of photosynthetically formed triose-phosphate to sucrose. A. Fructose-1,6-bisphosphate aldolase : Dihydroxyacetonephosphate. B. UDP-glucose pyrophosporylase : UDP-Glucose. C. Sucrose 6-phosphate synthase […]
CSIR NET Life Science Previous Year Questions and Solution PHOTOSYNTHESIS
Cellular Compartmentalization of Sucrose and Starch Synthesis
75. The photosynthetic assimilation of atmospheric CO2 by leaves yield sucrose and starch as end products of two gluconeogenic pathways that are physically separated. Which one of the following combination […]
