Who proved that oxygen evolved in photosynthesis comes from water?
Mayer
Calvin
Ruben, Hassid and Kamen
Blackman
C.
Ruben, Hassid and Kamen
Ruben, Hassid and Kamen (1941) using heavy isotope of oxygen, 18O in water, found that oxygen evolved in photosynthesis comes from water.
Which of the following set is a mis-match?
Phosphoenol pyruvate carboxykinase - Gluconeogenesis
Phospho fructokinase - Glycolysis
Succinate dehydrogenase - Kerbs cycle
Urease - Urea cycle
Which of the following type of cartilage is found in intervertebral disc of mammal?
Hyaline cartilage
Fibrous cartilage
Calcified cartilage
Elastic cartilage
Which one of the following animals lay eggs yet the female secretes milk?
Bat
Kangaroo
Platypus
Ostrich
In human eyes, colour perception is done by
rod cells only
cone cells only
Both (a) and (b)
choroid laver cells
2NAD(H+) produced during anaerobic glycolysis yield
6 ATP molecules
4 ATP molecules
8 ATP molecules
None of these
Pernicious anaemia is caused due to
absence of vitamin-K
lack of Vitamin - B12
lack of Vitamin - C
presence of intrinsic factor
Taxonomically, which of the following set is matched correctly?
Cattle fish, jelly fish, silver fish
Bat, pigeon, kite
Lobsters, spider, shrimps
Oyster, otter, Octopus