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Biology

Biology
How many pairs of ribs are there in human body?

13
11
12
10

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Biology
Cellulose is a

Mineral
Carbohydrate
Protein
Fat

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Biology
Which chemical is not found in DNA nucleotides?

Thymine
Uracil
Adenine
All of these

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Biology
Alveoli is related to which of the following system of human body?

Respiratory system
Reproductive system
Excretory system
Circulatory system

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Biology
If CO2 concentration in the blood increases, the breathing will

No effect
Decrease
Stop
Increase

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Biology
Which vitamin is also act as coenzymes

K
None of these
E
B12

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