Biology Questions

Q:

Smallest cell in human body is

A) Ovum B) Nerve cell
C) Sperm D) None of the above
 
Answer & Explanation Answer: C) Sperm

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3 2037
Q:

The scientific name of human being is?

A) Homo Nigrum B) Melongena Sapiens
C) Homo Sapiens D) Tigris Solanum
 
Answer & Explanation Answer: B) Melongena Sapiens

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1 2034
Q:

Which word best describes the structure of the cell membrane?

A) Rigid B) Impermeable
C) Nonpolar D) Layered
 
Answer & Explanation Answer: D) Layered

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3 2033
Q:

A dissecting aortic aneurysm occurs when

A) The inner layers of the aorta become separated B) The aorta ruptures, resulting in profound bleeding
C) All layers of the aorta suddenly contract D) None of the above
 
Answer & Explanation Answer: A) The inner layers of the aorta become separated

Explanation:

A dissecting aortic aneurysm occurs when the inner layers of the aorta become separated.

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3 2033
Q:

Pollen is produced by the process of

A) Mitosis B) Pollination
C) Meiosis D) Fertilization
 
Answer & Explanation Answer: A) Mitosis

Explanation:

Pollen is a male plant gamete. When microspores produced after meiosis process on microsporangia of male gametophyte undergo mitosis and forms pollen grains.

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7 2032
Q:

Which of the following is not true of color blindness?

A) Color blind people learn to rely on shapes, patterns, and positions of signs and signals. B) Red-green color blindness is the most common type of color blindness.
C) A color blind person cannot see any colors. D) For some people, it might be difficult to recognize colors of traffic lights and signs.
 
Answer & Explanation Answer: C) A color blind person cannot see any colors.

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2 2029
Q:

Dynamic equilibrium receptors are found in the

A) Vestibule B) Maculae
C) Semicircular Canals D) Cupula
 
Answer & Explanation Answer: C) Semicircular Canals

Explanation:

Dynamic equilibrium receptors are found in the Semicircular Canals. It monitors angular or rotational movements of the head when the body ismoving, such as a figure skater’s spinning, but maintaining balance.

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4 2029
Q:

Which of the following statements about DNA replication is true?

A) Single‑strand binding proteins stabilize the open conformation of the unwound DNA. B) Okazaki fragments are DNA fragments synthesized on the leading strand.
C) DNA polymerase adds dNTP monomers in the 3′-5′ direction. D) DNA gyrase unwinds the DNA double helix.
 
Answer & Explanation Answer: A) Single‑strand binding proteins stabilize the open conformation of the unwound DNA.

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1 2027