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- Question
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
- Correct Answer
- Some alleles are dominant, while others are recessive
ExplanationThe principle of dominance states that some alleles are dominant, while others are recessive.
- 1. 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 Discuss
- 2. Improving muscular strength and endurance slows bone density loss.
Options- A. TRUE
- B. FALSE Discuss
- 3. Self pollination will lead to
Options- A. Inbreeding
- B. Over breeding
- C. Outbreeding
- D. Rare breeding Discuss
- 4. One function of sphincter muscles is to
Options- A. secrete digestive juices into the GI tract
- B. grind large food particles
- C. trigger hormone release
- D. control the passage of food through the GI tract Discuss
- 5. Which of the following is a feature of leptin?
Options- A. It acts primarily on the brain
- B. It is secreted by the brain and acts on fat cells
- C. It is an enzyme
- D. It is usually deficient in thin people Discuss
- 6. ACTH stimulates the adrenal cortex to release corticosteroid hormones.
Options- A. TRUE
- B. FALSE Discuss
- 7. What is the unit of heredity?
Options- A. cell
- B. blood
- C. gene
- D. All of the above Discuss
- 8. 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 Discuss
- 9. 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 Discuss
- 10. In a nucleosome, the DNA is wrapped around
Options- A. histone octamer
- B. helix
- C. double helix
- D. None of the above Discuss
Biology problems
Search Results
Correct Answer: Hypertonic environment
Explanation:
Salts and sugars work to preserve foods by creating a Hypertonic environment.
Correct Answer: TRUE
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.
Correct Answer: control the passage of food through the GI tract
Correct Answer: It is secreted by the brain and acts on fat cells
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.
Correct Answer: gene
Explanation:
Genes are units of heredity.
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.
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.
Correct Answer: histone octamer
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