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Multiple Choice
Which of the following functional groups is commonly found in electron carrier molecules?
A
Hydroxyl group
B
Amino group
C
Carboxyl group
D
Phosphate group
Verified step by step guidance
1
Identify the role of electron carrier molecules in biological systems. They are involved in the transfer of electrons during metabolic reactions, such as cellular respiration and photosynthesis.
Understand that electron carriers often need to be able to store and transfer energy efficiently. This is typically achieved through the presence of high-energy bonds.
Recognize that the phosphate group is a key functional group in molecules like ATP (adenosine triphosphate) and NADP+ (nicotinamide adenine dinucleotide phosphate), which are crucial electron carriers in cells.
Consider the chemical properties of the phosphate group. It can form high-energy bonds, such as phosphoanhydride bonds in ATP, which are essential for energy transfer.
Conclude that the phosphate group is commonly found in electron carrier molecules due to its ability to participate in energy transfer through high-energy bonds.