EASY
DRDO MTS Tier - II
IMPORTANT
Earn 100

Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?

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Important Questions on Biology

EASY
DRDO MTS Tier - II
IMPORTANT
Kwashiorkor disease in children is caused by :
MEDIUM
DRDO MTS Tier - II
IMPORTANT
The mammalian heart is myogenic and is regulated by nerves. The heartbeat originates from_____.
HARD
DRDO MTS Tier - II
IMPORTANT

The HIV virus weakens the immunity of a person because it destroys :

MEDIUM
DRDO MTS Tier - II
IMPORTANT

An irregular mode of reproduction resulting in the development of an embryo without fertilization is called :

1. Parthenogenesis

2. Apogamy

3. Sporophytic budding

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EASY
DRDO MTS Tier - II
IMPORTANT
Deficiency of fluoride leads to which one of the following health problems?
MEDIUM
DRDO MTS Tier - II
IMPORTANT

Which of the following cells do not contain the nucleus?

1. Root hair cells

2. Red blood cells

3. Platelets

4. Monocytes

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MEDIUM
DRDO MTS Tier - II
IMPORTANT

Biological catalysts are protein molecules that:

1. Speed up a chemical reaction

2. Remain unchanged after the reaction

3. Function optimally at 37°C

4. Do not have an enzymatic activity

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HARD
DRDO MTS Tier - II
IMPORTANT
The elemental composition of an adult human body by mass is: