AP Biology Exam FRQ's UPDATED Actual Exam Questions and CORRECT Answers
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AP Biology
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AP Biology
AP Biology Exam FRQ's UPDATED Actual
Exam Questions and CORRECT Answers
(Unit 1) Describe the role of carbon in biological systems. - CORRECT ANSWER-
Carbon is used to build biological macromolecules such as carbohydrates, proteins, nucleic
acids, and lipids.
(Unit 1) Explain how, when the ...
AP Biology Exam FRQ's UPDATED Actual
Exam Questions and CORRECT Answers
(Unit 1) Describe the role of carbon in biological systems. - CORRECT ANSWER✔✔-
Carbon is used to build biological macromolecules such as carbohydrates, proteins, nucleic
acids, and lipids.
(Unit 1) 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. - CORRECT ANSWER✔✔- When the membranes are fused, the polar parts of the
phospholipids (hydrophilic head) from one cell to the other dissolves in water and forming
hydrogen bonds with the water. The non polar parts of the phospholipids (hydrophobic tail)
from one cell to the other avoids water. They create a lipid bilayer where the hydrophobic
tails are between the hydrophilic heads. When this layer is formed the heads are exposed to
water while the tails only interact with other tails not the water.
(Unit 1) 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. - CORRECT
ANSWER✔✔- The denature of the B-cancer cells would be the most immediate effect if the
fused cells are transferred to a growth medium that lacks a source of nitrogen. The cells will
either die OR be unable to synthesize DNA and RNA/nucleic acids/nucleotides and amino.
(Unit 1) Provide reasoning with evidence based on the composition of biological
macromolecules to support your claim. - CORRECT ANSWER✔✔- Nitrogen is a part of the
base component in the biological macromolecules (nucleic acids (DNA, RNA, or
nucleotides) and amino acids (polypeptides, or proteins)) meaning that if there is a lack of it
the B-cancer cells would not be able to properly function or exist due to it missing and
important component to its structure.
Identify the process used to form the covalent peptide bonds that join amino acids into a
polypeptide. - CORRECT ANSWER✔✔- 2 amino acids were joined together into a
polypeptide by hydrolysis, which is in its most basic description, the loss of a hydrogen
molecule.
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. - CORRECT ANSWER✔✔- Based on the R groups of the
original and substituted amino acids, two amino acids with charged or ionic or hydrophilic R-
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