The groups that consists of oxygen and carbon joined by a double bond is called the carbonyl group. If the carbonyl group is at the end of the molecular skeleton it is called a(n)
A. aldehyde.
B. keytone.
C. alcohol.
D. amino
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A change in the sequence of nucleotides above will lead to all of the following except
A. a change in the shape of the protein produced from the DNA code.
B. a change in the function of the protein produced from the DNA code.
C. a change in the mRNA molecule that will be transcribed from the DNA code.
D. a change in the ribosomes that translate the mRNA produced from the DNA code.
Which of the following statements below describes what is shown in the diagram?
A. the formation of starch from glucose monomers in a plant root
B. the digestion of proteins in the stomach into their constituent amino acids
C. the assembly of glycerol and fatty acids to produce a phospholipid
D. the enzymatic digestion of cellulose by the enzyme celloblase
Enzyme B has an optimal pH of 8. What would happen if Enzyme B were exposed to the optimal conditions of Enzyme A?
A. Enzyme B would function as normal.
B. The lowered pH would cause a disruption of Enzyme B's tertiary structure, thus causing the enzyme to be less effective or even ineffective.
C. Enzyme B would ionize in the solution and its performance would increase.
D. The active site of Enzyme B would unfold so that the appropriate substrate would fit into it better.
Which functional group is used in stabilizing three-dimensional structures of proteins by forming covalent bonds?
A. sulfhydryl
B. amino
C. carboxylic acid
D. carbonyl
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