Options:
- A. Endoderm
- B. Ectoderm
- C. Mesoderm
- D. Extraembryonic layers
View Answer
C. Mesoderm
Biology
An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?
Options:
- A. Apoenzyme
- B. Holoenzyme
- C. Activated enzyme
- D. Both b and c
View Answer
D. Both b and c
Ribosomes are assembled in__________?
Options:
- A. Nucleolus
- B. Nucleus
- C. DNA
- D. RNA
View Answer
A. Nucleolus
Sickle cell anemia is an example of_________________?
Options:
- A. Chromosomal aberration
- B. Insertion of gene
- C. Deletion of gene
- D. Point mutation
View Answer
D. Point mutation
Centrioles are composed of ________ triplets of microtubules.
Options:
- A. 3
- B. 9
- C. 10
- D. 15
View Answer
B. 9
Far-red light promotes flowering in_______________?
Options:
- A. Short day plant
- B. Long day plant
- C. Day neutral plant
- D. None of these
View Answer
A. Short day plant
The type of plastids which help in pollination is_________?
Options:
- A. Chromoplasts
- B. Leucoplasts
- C. Chloroplasts
- D. All of these
View Answer
A. Chromoplasts
Which of the following is not present in mitochondria?
Options:
- A. Enzymes
- B. Co-enzymes
- C. Ribosomes
- D. Thylakoids
View Answer
D. Thylakoids
Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________?
Options:
- A. F.Miescher
- B. Chargaff
- C. Watson & Crick
- D. Harshay & Chase
View Answer
B. Chargaff
Ozone depletion occurs commonly due to_______________?
Options:
- A. Carbon dioxide
- B. Chlorofluorocarbons
- C. UV rays
- D. Deforestation
View Answer
B. Chlorofluorocarbons