3
Q:

The rate of heartbeat is accelerated by the hormone 

A) adrenaline B) acetylcholine
C) thyroxine D) pituitrin

Answer:   A) adrenaline



Explanation:

The hormone adrenaline also called epinephrine is known as a stress hormone. In emotional upsets( like fear, anger etc.) this hormone is poured into the blood and it accelerates heart beat. The hormone acetylcholine decelerates heartbeat rate.

Subject: Biology
Q:

A colour blind person has difficulty in distinguishing which of the two colours ?

A) Green & Red B) White & Red
C) Blue & Red D) Red & Black
 
Answer & Explanation Answer: A) Green & Red

Explanation:
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4 49
Q:

What is scientific name of "Cotton"  ?

A) Azadhirachta Indica B) Phaseolies auicus
C) Gossypium Herbaceum D) Ficus Benghalensis
 
Answer & Explanation Answer: C) Gossypium Herbaceum

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8 189
Q:

Which one of the following vitamins is known as the anti sterile factor  ?

A) Ascorbic acid B) Riboflavin
C) Niacin D) Retinol
 
Answer & Explanation Answer: B) Riboflavin

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4 325
Q:

The sex of a newborn baby is determined by the chromosome inherited from

A) The Father B) The Mother
C) The Father's Father D) Both A & B
 
Answer & Explanation Answer: A) The Father

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5 370
Q:

Oath taken by medical graduates is given by-

A) Theophrastus B) Aristotle
C) Darwin D) Hippocrates
 
Answer & Explanation Answer: D) Hippocrates

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7 342