Biology Questions

Q:

______ is a thyroid hormone which controls the balance of calcium in the body.

A) Calcitonin B) Thyroxine
C) Calmodulin D) all of these
 
Answer & Explanation Answer: A) Calcitonin

Explanation:

Calcitonin is 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells of the thyroid, and in many other animals in the ultimopharyngeal body. It acts to reduce blood calcium, opposing the effects of parathyroid hormone.

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Q:

Which among the following is NOT an event during the photosynthesis process?

A) Absorption of light energy by chlorophyll B) Conversion of light energy to chemical energy
C) Splitting of water molecules into hydrogen and oxygen D) Oxidation of carbon dioxide to carbohydrates
 
Answer & Explanation Answer: D) Oxidation of carbon dioxide to carbohydrates

Explanation:
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Q:

The Lachman test is used to evaluate stability of the

A) Anterior cruciate ligament B) Iliotibial band
C) Pivot shift  D) None
 
Answer & Explanation Answer: A) Anterior cruciate ligament

Explanation:

The Lachman test is used to evaluate stability of the Anterior cruciate ligament.

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Q:

Which feature is shared by all monosaccharides?

A) In their linear forms, they all contain a carbonyl and several hydroxyl functional groups. B) They are all pentoses.
C) They all contain more than one sugar. D) In their linear forms, they all contain a carboxyl and several hydroxyl functional groups.
 
Answer & Explanation Answer: A) In their linear forms, they all contain a carbonyl and several hydroxyl functional groups.

Explanation:
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Q:

Which one of the following does not directly refer to cholesterol?

A) Low density lipoprotein B) High density lipoprotein
C) Rhesus factor D) Packaged protein coat
 
Answer & Explanation Answer: C) Rhesus factor

Explanation:
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Q:

Which of the following is not true about Gymnosperms?

A) Dominant phase is saprophytes B) Vascular bundles are absent
C) spores are heterospores D) Flowers are absent
 
Answer & Explanation Answer: B) Vascular bundles are absent

Explanation:
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Q:

Which plant tissue is also known as growing tissue?

A) Only permanent tissue B) Only Meristematic tissue
C) Both Permanent and meristematic tissue D) Neither Permanent nor meristematic tissue  
 
Answer & Explanation Answer: B) Only Meristematic tissue

Explanation:
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Q:

In each testes in a male reproductive system, there are ________ compartments called testicular lobules.

A) 150 B) 200
C) 250 D) 300
 
Answer & Explanation Answer: C) 250

Explanation:
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