Which are the special proteins in muscles that contract and relax to cause movement?
Who discovered the ABO blood group system?
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Which of the following is a good source of Vitamin A?
The effects of any drug depend on
The specificity of an antibody is due to
In most green plants, chloroplasts are
Molecular clocks are based on the idea that _____.
Fats, oils and cholesterol are all types of what?
How much salt is present in our body?