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 Biology Questions

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Q:

Lungs are the primary organs of _________.

A) Digestion B) Constipation
C) Perspiration D) Respiration
 
Answer & Explanation Answer: D) Respiration

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Q:

Intestinal bacteria synthesizes which of the following in the human body?

A) Vitamin K B) Proteins
C) Fats D) Vitamin D
 
Answer & Explanation Answer: A) Vitamin K

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Q:

____ tissue changes the diameter of a blood vessel.

A) Heart B) Muscle
C) Epithelial D) Bone
 
Answer & Explanation Answer: B) Muscle

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Q:

In which of the following tissues are the cells living, elongated and irregularly thickened at the corners?

A) Parenchyma B) Sclerenchyma
C) Aerenchyma D) Collenchyma
 
Answer & Explanation Answer: D) Collenchyma

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Q:

The presence of air bubble in blood stream is dangerous to life because

A) Air combines with blood forming a complex B) The flow of blood increases manifold
C) The flow of blood is obstructed D) The pressure of blood increases manifold
 
Answer & Explanation Answer: C) The flow of blood is obstructed

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Q:

Which is NOT an example of organism that takes in whole food material and breaks it down inside its body?

 

A) Mushrooms   B) Fish  
C) Snake D) Lizards
 
Answer & Explanation Answer: A) Mushrooms  

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Q:

The disease cirrhosis affects which organ in the body?

A) Brain B) Liver
C) Heart D) Kidney
 
Answer & Explanation Answer: B) Liver

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Q:

AIDS is caused by the Human Immunodeficiency Virus (HIV). The transmission of HIV infection generally occurs through

A) eating contaminated food and water   B) transfusion of contaminated blood and blood products
C) inhaling polluted air D) shaking hand with infected person
 
Answer & Explanation Answer: B) transfusion of contaminated blood and blood products

Explanation:

AIDS is caused by the Human Immuno deficiency Virus (HIV), a member of a group of viruses called retrovirus, which have an envelope enclosing the RNA genome. Transmission of HIV-infection generally occurs by (a) sexual contact with infected person, (b) by transfusion of contaminated blood and blood products, (c) by sharing infected needles as in the case of intravenous drug abusers and (d) from infected mother to her child through placenta.

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