OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All of the following are correct pairings of functional groups and functions except
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Sulfhydryl group (thiol)-forms bridges that maintain protein structure
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Methyl group-increases gene expression when present on chromsomes
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Phosphate group-has charged that allows a molecule to react with water
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None of the above
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Explanation:
Detailed explanation-1: -Methylation of histones can either increase or decrease transcription of genes, depending on which amino acids in the histones are methylated, and how many methyl groups are attached.
Detailed explanation-2: -Methyl groups can affect gene expression and are written –CH3. Hydroxyl is always polar. Carbonyl determines the two groups of sugars. Carboxyl has acidic properties and a carboxyl group is written –COOH.
There is 1 question to complete.