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Biology

Biology
PH value of human blood is

8.1
9.2
8.4
7.4

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Biology
Which of the following acts as an insulator against heat, cold and as a shock-absorber in the body ?

Epidermis
Dermis
Subcutaneous fat layer
None of these

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Biology
In autotrophic bacteria, where is chlorophyll located?

In the ribosomes
In the nucleoid
In chloroplast membranes
In the infolded plasma membrane

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Biology
Metaphase is followed by the next phase of mitosis called

Anaphase
Anaphase
Interphase
Prophase

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Biology
N2 content is kept constant in the biosphere due to

nitrogen cycle
absorption of N2
industrial pollution
N2 fixation

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

Both A & B
The Father
The Mother
The Father's Father

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