Kerala Medical Entrance Questions- 2009 (KEAM)

1. The haeme protein complexes, which act as oxidising agents are known as

a) Haemoglobin  

b) myoglobin
c) chlorophyll
d) Cytochrome

2. The non-sister chromatids twist around and exchange segments with each other during

a) diplotene
b) pachytene
c) Zygotene
d) diakinensis

3. In C3 plants , the first stable compound formed after CO2 fixation is

a)  3-Phosphoglyceraldehyde
b) malic acid
c) oxaloacetic acid
d) ribulose 1,5 biphosphate

4.Which one of the following is an amide involved in nitrogen assimilation by plants?

a) Glutamate
b) Alanine
c) Asparagine
d) Serine

5. Cohesion theory of water movements in plants was put forth by

a) Melvin Calvin
b) Hans A Krebs
c) Henry Dixon
d)  Englemann

6. Which one of the following is wrongly matched

a) Fungi- Chitin
b) Phospholipids- plasma membrane
c) Enzyme- Lipopoly saccharide
d) antibody- glycoprotein

7.An example of non competition  inhibition is

a) the inhibition of succinic dehydrogenase by malonate
b) cyanide action of cyctochrome oxidase
c)  sulpha drug on folic acid synthesising bacteria
d)   reaction of succinic dehydroganse

8. The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in leguminous root nodule is

a) nitrogenase
b) carboxylase
c)  nitrite reductase
d) nitrate reductase

9.  The mineral involved in the photolysis of water are

i) manganese  iii) magnesium
ii) calcium  iv) chloride
a) i and ii only
b) i, ii and iv only
c) i and iv only
d) iii and iv only

10. The enzyme  responsible for primary carboxylation in C 3plants is

a)  hexokinase
b) succinic dehydrogenase
c)  RuBP carboxylase oxygenase
d)  PEP carboxylase

11. The RQ value of oxalic aid is

a) 1.0
b) 4
c) 1.5
d) 0.7

12.  Which one of the following is commonly found in temperate coniferous forest

a) Quercus
b)  Prosopis
c) Dipterocarpus
d)  Pinus wallichiana

13.  The shade tolerant plants are known as

a) psammophytes
b) halophytes
c) sciophytes
d) Heliophytes

14. The  response of different organisms to environmental rhythms of light and darkness is called

a) Photoperiodism
b) Phototaxis
c) Vernalization
d) Phototropism

15. The ripening of fruits can be fastened by treatment with 

a) Gibberellins
b) Ethylene
c) ABA
d) Cytokinin
Answers:

1. d) Cytochrome
2. b) pachytene
3. a) 3-Phosphoglyceraldehyde
4. c) Asparagine
5. c) Henry Dixon
6. c) Enzyme- Lipopoly saccharide
7. b) cyanide action of cyctochrome oxidase
8. a) nitrogenase
9. b) i, ii and iv only
10. c) RuBP carboxylase oxygenase
11. b) 4
12. d) Pinus wallichiana
13. c) sciophytes
14. a) Photoperiodism
15. b) Ethylene

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