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- Question
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
- Correct Answer
- It is secreted by the brain and acts on fat cells
- 1. Higher doses of barbiturates result in
Options- A. Lack of emotional control
- B. Impaired thinking
- C. Both A & B
- D. None of the above Discuss
- 2. Which step happens first in DNA replication?
Options- A. Initiation
- B. Elongation
- C. Termination
- D. None of the above Discuss
- 3. Which virus is not associated with cancer?
Options- A. Epstein-Barr virus
- B. Papillomavirus
- C. Retrovirus
- D. Hepatitis virus Discuss
- 4. Cellulose is a major component of the
Options- A. Pythium
- B. Pseudomonas
- C. Xanthomonas
- D. Saccharomyces Discuss
- 5. What base does guanine pair with?
Options- A. Adenine
- B. Thymine
- C. Uracil
- D. Cytosine Discuss
- 6. 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
- 7. Self pollination will lead to
Options- A. Inbreeding
- B. Over breeding
- C. Outbreeding
- D. Rare breeding Discuss
- 8. Improving muscular strength and endurance slows bone density loss.
Options- A. TRUE
- B. FALSE Discuss
- 9. 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
- 10. 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 Discuss
Biology problems
Search Results
Correct Answer: Both A & B
Correct Answer: Initiation
Explanation:
In the first step of DNA replication called initiation, the DNA pair gets unwidened.
Correct Answer: Retrovirus
Explanation:
In the above given options, Retrovirus is the only virus which is not associated with cancer. Here the viruses which are associated with different types of cancer. They are:
Hepatitis virus which is associated with Liver cancer
Papillomavirus which is associated with Cervical cancer
Epstein-Barr virus which is associated with Burkitt's lymphoma.
Correct Answer: Pythium
Correct Answer: Cytosine
Explanation:
In DNA, the chemicals are Adenine, thymine, guanine and cytosine. They always pair as basepairs like Adenine with Thymine and Guanine with Cytosine.
Correct Answer: control the passage of food through the GI tract
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: TRUE
Correct Answer: Hypertonic environment
Explanation:
Salts and sugars work to preserve foods by creating a Hypertonic environment.
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.
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