BIOLOGY quest-1

1. Teeth and bones acquire strength and rigidity from
a. calcium
b. fluorine
c. chlorine
d. sodium

2. The type of tail found in shark is
a. Protocercal
b. Homocercal
c. Heterocercal
d. Diphycercal

3. The Sigmoid Colon is a part of
a. small intestine
b. stomach
c. large intestine
d. ileum

4. Which of the following plant pigments absorb in red and far-red region of light ?
a. carotenoids
b. chlorophyll
c. phytochrome
d. cryptochrome

5. The process through which excess of light energy dissipated in photosynthesis is known as
a. quenching
b. scavenging
c. photolysis
d. photophosphorylation

6. AIDS virus destroys
a. lymphocytes
b. monocytes
c. neutrophils
d. basophils

7. Which bacterial strain developed from natural isolates by genetic manipulations can be used for treating oil spills ?
a. pseudomonas
b. agrobacterium
c. clostridium
d. nitrosomonas

8. Coating of solid waste with impervious material is known as
a. encapsulation
b. chemical fixation
c. landfill
d. capping

9. Thiamine dimer formation in DNA is caused by
a. IR-rays
b. X-rays
c. beta and gamma rays
d. UV-rays

10. A molecule in plants comparable to hemoglobin in animals is
a. chlorophyll
b. carotene
c. cytochrome
d. cellulose


Answers:
1. a
2. c
3. c
4. c
5. a
6. a
7. a
8. a
9. d
10. a