Important Biology General Awareness Questions

Question Mitochondria are able to produce their own

A) Chloroplasts
B) Digestive Enzymes
C) Proteins
D) Nucleus

Answer: Proteins

Question How many chromosomes pairs are in a human body? 

A) 19
B) 22
C) 23
D) 24

Answer: 23

Explanations: In human body, each cell normally contains 23 pairs of chromosomes, for a total number of 46 chromosomes. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.

Question Thyroid gland produces a hormone called 'Thyroxine' which

A) controls blood glucose levels
B) controls ovulation
C) controls metabolic rate
D) maintains pregnancy

Answer: controls metabolic rate

Question Which one of the following statements regarding viruses is not true?

A) Viruses need living cells to reproduce.

B) All viruses are parasites.

C) Viruses can synthesize their food through photosynthesis.

D) Viruses are similar to chemical substances outside the host.

Answer: Viruses can synthesize their food through photosynthesis.

Question Chickenpox is caused by

A) DNA virus
B) Variola virus
C) Streptococcus
D) Vibrio cholerae
Answer: DNA virus

Explanation: DNA virus named Varicella Zoster virus.

Question When one gene pair hides the effect of the other unit, the phenomenon is referred to as:

A) None of the options
B) Mutation
C) Dominance
D) Epistasis

Answer: Epistasis

Question Blood is which type of tissue?

A) Epithelial tissue

B) Muscular Tissue

C) Nervous Tissue

D) Connective Tissue

Answer: Connective Tissue

Question Which one of the following diseases may be caused by the deficiency of vitamin C?

A) Rickets
B) Rabies
C) Hepatitis
D) Scurvy

Answer: Scurvy