Biology Questions

Q:

What is the name of the point at which the chromatids are attached in a chromosome?

A) Centrosome B) Centromere
C) Nucleosome D) Gene
 
Answer & Explanation Answer: B) Centromere

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Q:

The instrument used to examine a person's digestive tract is called ___.

A) Oscilloscope B) Microscope
C) Endoscope D) Radiograph
 
Answer & Explanation Answer: C) Endoscope

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Q:

Involuntary muscles are controlled by the

A) Central nervous system B) Autonomic nervous system
C) Peripheral nervous system D) All the above
 
Answer & Explanation Answer: B) Autonomic nervous system

Explanation:

Involuntary muscles are the muscles which contract without conscious control whereas Voluntary muscles are the muscles that help you walk, talk, pick up things, jump and do all the basic or complex movements you do everyday with your consciousness.

* The contraction in the involuntary muscles is controlled by the autonomic nervous system. These are present in the walls of the digestive system, blood vessels, bronchi, uterus and bladder.

* Voluntary muscles are mostly located in the arms ,legs ,hands, and feet.

 

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Q:

Cholesterol is synthesized by the body mainly in the

A) small intestine B) liver
C) large intestine D) abdomen
 
Answer & Explanation Answer: B) liver

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Q:

Identify an example of a connective tissue in humans.

A) Fibres B) Bone
C) Muscles D) Cell
 
Answer & Explanation Answer: B) Bone

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Q:

Sleep apnea is related to ___ while sleeping.

A) Walking B) Talking
C) Snoring D) Smiling
 
Answer & Explanation Answer: C) Snoring

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Q:

_____ is the cell organelle, in which the biochemical processes of respiration and energy production occur.

A) Mitochondria B) Chloroplast
C) Ribosomes D) Nucleus
 
Answer & Explanation Answer: A) Mitochondria

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Q:

___________ is a hormone that regulates the amount of glucose in the blood.

A) Glucogen B) Thyroxine
C) Oxytocin D) Insulin
 
Answer & Explanation Answer: D) Insulin

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