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Biology

Biology
Precentage of CO2 found in exhaled air

0.16
0.04
0.12
0.08

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Biology
Through cell membrane ,which substances can pass more easily than others?

Lipid soluble
Nucleic acids soluble
Peptides soluble
Cellulose soluble

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Biology
In all arthropods,the body is covered with a chittinous cuticle which is secreted by the

Mesophyll
Chitin
Epidermis
Endodermis

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Biology
Study of process of ageing

Genocology
Geronotology
None of these
Ontogeny

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Biology
Oxyreductases, transferases, hydrolases, lyases, isomerases and ligases are all classes of

enzymes
vitamins
proteins
hormones

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Biology
Biological membranes are composed of

Carbohydrate groups
Phospholipids
Proteins
All of these

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