Q. 1
A defective segment of DNA that resembles a gene but cannot produce functional protein is called
- a. Exon
- b. Pseudogenes
- c. Regulatory sequence
- d. Homeotic gene
- e. Lethal gene
- Answer: A
Q. 2
The process by which immature cells develop into matured cells of a specific lineage is
- a. Organogenesis
- b. Differentiation
- c. Growth
- d. Pattern formation
- e. Morphogenesis
- Answer: A
Q. 3
In humans, the part of the large intestine that opens into rectum is called
- a. Caecum
- b. Colon
- c. Ileum
- d. Anus
- e. Jejunum
- Answer: A
Q. 4
Which of the following occurs as a result of accumulation of fertilizers in a pond?
- a. Biodegradation
- b. Biomagnification
- c. Bioaccumulation
- d. Eutrophication
- e. Spontaneous combustion
- Answer: A
Q. 5
In humans, an extra X chromosome causes
- a. Klinefelter syndrome
- b. Down syndrome
- c. Hemophilia
- d. Porphyria
- e. Autism
- Answer: A
Q. 6
The rumen of cattle contains _________
- a. Methanobacterium
- b. Acetobacterium
- c. Corynebacterium
- d. Halobacterium
- e. Mycobacterium
- Answer: A
Q. 7
Altruism is
- a. A behaviour by an animal that benefits other members of its species
- b. A behaviour by an animal that troubles other members of its species
- c. A behaviour by an animal that troubles members of other species
- d. A behaviour by an animal that hides food from its fellow beings
- e. None of the above
- Answer: A
Q. 8
The state in which viral genome gets integrated with the host genome is
- a. Provirus
- b. Absorption
- c. Prophase
- d. Lytic cycle
- e. None of these
- Answer: A
Q. 9
Breakdown of fat into fatty acid and glycerol is
- a. Anabolism
- b. Catabolism
- c. ??- oxidation
- d. ??- oxidation
- e. Both A and C
- Answer: A
Q. 10
Duplication of chromosomes takes place in
- a. S phase
- b. G1 phase
- c. G2 phase
- d. Prophase
- e. Anaphase
- Answer: A
Q. 11
The enzyme involved in the synthesis of mRNA is
- a. RNA polymerase I
- b. RNA polymerase II
- c. RNA polymerase III
- d. Ribonuclease
- e. Hexokinase
- Answer: A
Q. 12
Cleptobiosis is an ecological relationship that can be seen in
- a. Ants
- b. Cockroaches
- c. Tiger
- d. Deer
- e. None of the above
- Answer: A
Q. 13
Which cell organelle has a role in transporting materials to other parts of a cell?
- a. Golgi complex
- b. Lysosome
- c. Chloroplast
- d. Mitochondria
- e. Nucleus
- Answer: A
Q. 14
In an ecosystem, keystone species are those
- a. Contributing to ecosystem properties
- b. That are most frequent
- c. Present in minimum number
- d. Attaining large biomass
- e. Having high competency
- Answer: A
Q. 15
The role of cardinal genes in Drosophila is
- a. Pattern formation
- b. Sex determination
- c. Metamorphosis
- d. Cephalic furrow formation
- e. Germ band extension
- Answer: A