AP Bio FRQs. Exam Questions With Correct
Answers
Describe the role of carbon in biological systems. - answerThe response indicates that carbon
is used to build biological macromolecules such as carbohydrates, proteins, nucleic acids, and
lipids.
Explain how, when the membranes are fused, the p...
Describe the role of carbon in biological systems. - answer✔✔The response indicates that carbon
is used to build biological macromolecules such as carbohydrates, proteins, nucleic acids, and
lipids.
Explain how, when the membranes are fused, the polar parts of the phospholipids from one cell
will interact with the phospholipids from the other cell and how the nonpolar parts of the
phospholipids from one cell will interact with the phospholipids from the other cell. -
answer✔✔The response indicates that the polar part of the phospholipids from one cell will align
or interact with the polar parts of the phospholipids from the other cell, and nonpolar parts of the
phospholipids from one cell will align or interact with nonpolar parts of the phospholipids from
the other cell.
Make a claim about the most immediate effect on the fused B-cancer cells if the fused cells are
transferred to a growth medium that lacks a source of nitrogen. - answer✔✔The response
indicates that the cells will die OR that they will be unable to synthesize DNA and RNA/nucleic
acids/nucleotides and amino.
Provide reasoning with evidence based on the composition of biological macromolecules to
support your claim. - answer✔✔The response indicates that nucleic acids (DNA, RNA, or
nucleotides) and amino acids (polypeptides, or proteins) contain nitrogen.
Identify the process used to form the covalent peptide bonds that join amino acids into a
polypeptide. - answer✔✔The response indicates that the process that joins amino acids into a
polypeptide is a dehydration synthesis OR a condensation reaction.
The change in the amino acid sequence illustrated in Figure 1 caused a change in the shape of
Receptor X. Based on the R groups of the original and substituted amino acids, explain why
Receptor X changed shape. - answer✔✔The response indicates that two amino acids with
charged or ionic or hydrophilic R-groups were replaced by two amino acids with uncharged or
nonpolar or hydrophobic R-groups.
Using the template below that represents the four levels of protein structure, place an X on each
level that is expected to be altered as a result of the amino acid substitutions shown in Figure 1. -
answer✔✔The response indicates primary and tertiary structure.
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