Biology problems
- 1. Self pollination will lead to
Options- A. Inbreeding
- B. Over breeding
- C. Outbreeding
- D. Rare breeding Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Inbreeding
Explanation:
Self pollination occurs in the flowers when the pollen grains of the flower falls on the stigma of the same due to wind or insects like moths and bees. This lead to the inbreeding.
- 2. Improving muscular strength and endurance slows bone density loss.
Options- A. TRUE
- B. FALSE Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk
Correct Answer: TRUE
- 3. Salts and sugars work to preserve foods by creating a
Options- A. Hypertonic environment
- B. Lower pH
- C. Depletion of nutrients
- D. Lower osmotic pressure Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Hypertonic environment
Explanation:
Salts and sugars work to preserve foods by creating a Hypertonic environment.
- 4. The principle of dominance states that
Options- A. Some alleles are dominant, while others are recessive
- B. All alleles are recessive
- C. All alleles are dominant
- D. Alleles are neither dominant nor recessive Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Some alleles are dominant, while others are recessive
Explanation:
The principle of dominance states that some alleles are dominant, while others are recessive.
- 5. ACTH stimulates the adrenal cortex to release corticosteroid hormones.
Options- A. TRUE
- B. FALSE Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: TRUE
Explanation:
ACTH means Adrenal Corticotrophic Hormone.
CRH - Corticotrophin Releasing Hormone produced by hypothalamus stimulates the pituitary gland to release the ACTH which in turn produces corticosteroid hormones by adrenal glands.
Hence, the given statement is TRUE.
- 6. What is the unit of heredity?
Options- A. cell
- B. blood
- C. gene
- D. All of the above Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk
Correct Answer: gene
Explanation:
Genes are units of heredity.
- 7. Which of these best describes genetic drift?
Options- A. Random fluctuations in the gene frequencies within a population Eliminate
- B. The combining of alleles to create more genetic variations within a population
- C. The movement of alleles between population
- D. A planned method to reduce the number of inferior genes in a population Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk
Correct Answer: Random fluctuations in the gene frequencies within a population Eliminate
Explanation:
Random fluctuations in the gene frequencies within a population Eliminate is the one which best describes genetic drift.
- 8. Which formula represents an amino acid?
Options- A. R-CH3(NH2)-COOH
- B. R-CH(NH2)-COOH
- C. R-CH2(NH2)-COOH
- D. R-CH3(NH2)-COH Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk
Correct Answer: R-CH(NH2)-COOH
Explanation:
Amino acids are the building blocks of proteins. There are about 21 essential amino acids in the human body like histidine, leucine, lysine... The general formula for amino acid is R-CH(NH2)-COOH.
- 9. In a nucleosome, the DNA is wrapped around
Options- A. histone octamer
- B. helix
- C. double helix
- D. None of the above Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: histone octamer
- 10. Bone strength in later life depends on
Options- A. the formation of dense bones during youth
- B. the increased calcium absorption in the elderly
- C. the increased production of estrogen after menopause
- D. reducing physical activity to protect bones Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: the formation of dense bones during youth
More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.