When biomolecule X is being formed from its respective sub-units - VCE - SSCE Biology - Question 4 - 2013 - Paper 1
Question 4
When biomolecule X is being formed from its respective sub-units.
A. peptide bonds are formed.
B. there is a net energy output.
C. a molecule of water is added.
D. a... show full transcript
Worked Solution & Example Answer:When biomolecule X is being formed from its respective sub-units - VCE - SSCE Biology - Question 4 - 2013 - Paper 1
Step 1
A. peptide bonds are formed.
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Answer
During the formation of biomolecule X, peptide bonds are indeed formed as amino acids link together to create polypeptides. This bond forms through a dehydration synthesis process where the amino group of one amino acid reacts with the carboxyl group of another.
Step 2
B. there is a net energy output.
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Answer
In the context of biomolecule formation, specifically during the synthesis of polymers, energy is typically consumed rather than produced. Therefore, this statement is inaccurate in this scenario.
Step 3
C. a molecule of water is added.
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Answer
In fact, during the formation of biomolecule X, a molecule of water is removed, not added. The condensation reaction leads to the release of water as a byproduct.
Step 4
D. a condensation reaction occurs.
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Answer
This option is correct. A condensation reaction occurs when sub-units come together to form a larger molecule, resulting in the release of a water molecule. This is a defining characteristic of the formation of biomolecules from their monomers.
