Biology Questions

Q:

What temperature does bacteria grow quickest at

A) 40°F and 140°F B) 14°C and 90°C
C) 80°F and 140°F D) None
 
Answer & Explanation Answer: A) 40°F and 140°F

Explanation:

Most bacteria will grow rapidly between 4°C and 60°C (40°F and 140°F).

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Q:

Plants bend towards light due to the diffusion of the ____ hormone on the other side of the shoot.

A) abscisic acid B) auxin
C) cytokinin D) gibberellin
 
Answer & Explanation Answer: B) auxin

Explanation:
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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

Explanation:
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Q:

Which of the following is at the second trophic level of a food chain?

A) Grass B) Rats
C) Snake D) Eagle
 
Answer & Explanation Answer: B) Rats

Explanation:
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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:

Which one reveals, more appropriately, functioning of the heart?

A) Electrocardiogram B) Echocardiogram
C) Stethoscope D) Lipid profile
 
Answer & Explanation Answer: B) Echocardiogram

Explanation:
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Q:

___ are the carriers of heredity material.

A) Genetics B) Genes
C) Gametes D) Germ cells
 
Answer & Explanation Answer: B) Genes

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Q:

Which among the following is respiratory pigment in human beings?

A) Melanin B) Haemoglobin
C) Rhodopsin D) Bilirubin
 
Answer & Explanation Answer: B) Haemoglobin

Explanation:
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