Biology Questions

Q:

What happens at the synapse between two neurons?

A) electrical signals are converted into chemical B) chemical signals are converted into physical
C) physical signals are converted into chemical D) None of the above
 
Answer & Explanation Answer: A) electrical signals are converted into chemical

Explanation:

At the synapse between two neurons, electrical signals are converted into chemical signals. A synapse is the gap between the two neurons.

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3 2003
Q:

The two purines in DNA are

A) Adenine & Thymine B) Thymine & Uracil
C) Guanine & Uracil D) Adenine & Guanine
 
Answer & Explanation Answer: D) Adenine & Guanine

Explanation:

The purines are bases in the DNA. The two purines in DNA are Adenine and Guanine. These two purines forms hydrogen bonds with their complimentary pyrimidines such as Thymine and Cytosine to keep the two rails of the DNA molecule together.

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3 2002
Q:

The organs of the urinary system are

A) Kidney B) Urinary bladder
C) Ureter D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

the_organs_of_the_urinary_system_are1537338921.png image

 

The urinary system purpose in the human body is to eleminate the waste from the body. The urinary system is also called as Rena system. It consists of kidney, ureter, urinary bladder and urethra.

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3 2002
Q:

Dysfunctional behaviors are maladaptive which means that they

A) are medicated B) interfere with everyday life
C) cause of stress D) all of the above
 
Answer & Explanation Answer: B) interfere with everyday life

Explanation:

Dysfunctional behaviors are maladaptive which means that they interfere with everyday life.

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2 1994
Q:

Where does most digestion take place?

A) Stomach B) Large intestine
C) Small intestine D) Mouth
 
Answer & Explanation Answer: C) Small intestine

Explanation:

The digestion process starts in the mouth and the complete digestion process completes in the small intestine where all the nutrients in the food are absorbed.

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1 1989
Q:

Which is not a function of the cytoskeleton?

A) helps the cell move B) gives cell a shape
C) prevents chromosomes from separating D) None of the above
 
Answer & Explanation Answer: C) prevents chromosomes from separating

Explanation:

A cytoskeleton acts as a frame that gives a cell its shape, protects it to an extent, and helps with cellular motion.

 

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4 1984
Q:

Which of the following is part of the axial skeleton?

A) Thigh bone B) Shoulder bones
C) Vertebral column D) Foot bones
 
Answer & Explanation Answer: C) Vertebral column

Explanation:

The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In the human skeleton, it consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.

 

Bones of shoulder, thigh and foot are the part of appendicular skeleton. 

  

Hence, Vertebral column is the part of axial skeleton.

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3 1984
Q:

Which of the following is a feature of ghrelin?

A) It stimulates appetite and energy storage B) It is released in high amounts from adipocytes during periods of excess energy intake
C) The blood level in the fasting state correlates directly with body weight D) It is a metabolic antagonist of leptin
 
Answer & Explanation Answer: A) It stimulates appetite and energy storage

Explanation:
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1 1984