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Q:

The smallest blood vessels which are one-cell thick, are called ______.

A) vena cava B) arteries
C) veins D) capillaries
 
Answer & Explanation Answer: D) capillaries

Explanation:
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Q:

What base is found on RNA but not on DNA?

A) Uracil B) Thymine
C) Adenine D) None of the above
 
Answer & Explanation Answer: A) Uracil

Explanation:

Uracil is present in RNA and binds to adenine whereas thymine is present in DNA and binds to adenine.

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Q:

The definition of Lysogeny is

Answer

The definition of Lysogeny is a dormant viral infection of bacteria in which the genetic material of a virus combines with that of a host bacterium.

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Q:

Androgens such as testosterone are produced by the

A) Spermatoganea B) Interstitial cells
C) Seminiferous D) None of the above
 
Answer & Explanation Answer: B) Interstitial cells

Explanation:

Androgens such as testosterone are produced by the Interstitial cells.

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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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Q:

Which of these is a human disease caused by bacteria?

A) TB B) Ascariasis
C) Chickenpox D) Common cold
 
Answer & Explanation Answer: A) TB

Explanation:

Bacteria which causes disease are called Pathogenic Bacteria. TB is caused by bacteria.

 

Some of the diseases caused by bacteria are::

1. Tuberculosis, TB (affects the lungs)

2. Salmonella (causes food poisoning)

3. Whooping cough (affects the lungs)

4. Septic Sore Throat

 

 

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Q:

Meiosis ii is similar to mitosis in that

A) the daughter cells are diploid B) sister chromatids separate during anaphase
C) DNA replicates before the division D) All of the above
 
Answer & Explanation Answer: C) DNA replicates before the division

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Q:

Antibodies are produced by

A) B Lymphocytes B) Pathogens
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) B Lymphocytes

Explanation:
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