Biology Questions

Q:

What is the function of guard cells of stomata?

A) Opening of stomata only B) Closing of stomata only
C) Both opening and closing of stomata D) Neither opening nor closing of stomata
 
Answer & Explanation Answer: C) Both opening and closing of stomata

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Q:

The sigmoid colon is a part of

A) Small Intestine B) Large Intestine
C) Pharynx D) Rectum
 
Answer & Explanation Answer: B) Large Intestine

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Q:

The specific role of Vitamin K is in the synthesis of

A) Albumin B) Antibodies
C) Globulin D) Prothrombin
 
Answer & Explanation Answer: D) Prothrombin

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Q:

Which of the following enzymes is responsible for RNA synthesis?

A) RNA polymerase B) RNase
C) RNA ligase D) DNA polymerase
 
Answer & Explanation Answer: A) RNA polymerase

Explanation:

The enzyme that is mainly responsible for RNA synthesis is known as RNA polymerase.

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Q:

Which of the following glands is a source of the enzyme Ptyalin?

A) Pancreas B) Thyroid Gland
C) Pituitary Gland D) Salivary Glands
 
Answer & Explanation Answer: D) Salivary Glands

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Q:

Name the respiratory organs of insects

A) Skin B) Body Surface
C) Gills D) Tracheae
 
Answer & Explanation Answer: D) Tracheae

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Q:

Alveoli are balloon like structures within the ______.

A) lungs B) kidney
C) liver D) heart
 
Answer & Explanation Answer: A) lungs

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Q:

Plants utilise ________ from the atmosphere foe photosynthesis

A) oxygen B) nitrogen
C) Carbon dioxide D) hydrogen
 
Answer & Explanation Answer: C) Carbon dioxide

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