The stage in a cell's life cycle in which the cell performs its normal functions and prepares for division is called
A) prophase.
B) metaphase.
C) interphase.
D) telophase.
E) anaphase.
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Question 2) When is DNA replicated?
A) interphase
B) anaphase
C) metaphase
D) telophase
E) interkinesis
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Question 3) In DNA replication,
A) 23 copies are made of each chromosome.
B) one new copy is made of each chromosome, and the original chromosome remains intact.
C) two new copies are made of each chromosome, and the original chromosome is destroyed.
D) two copies are made of each chromosome, and each copy contains one of the DNA strands from the original chromosome.
E) the chromosome is copied to RNA, which is then copied to DNA for a new chromosome.
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Question 4) If a cell lacked the enzyme DNA polymerase, it could not
A) maintain the integrity of the nuclear envelope.
B) form complementary strands of DNA during replication.
C) link segments of DNA together.
D) form spindle fibers.
E) form a new nuclear membrane during telophase.
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Question 5) The genetically programmed death of cells is called
A) differentiation.
B) replication.
C) apoptosis.
D) metastasis.
E) mitosis.
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Question 6) Which of these substances could be driven across a membrane by the resting membrane potential?
A) H2O
B) O2
C) glucose
D) Na+
E) CO2
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Question 7) The potential difference across the cell membrane is due to the unequal distribution of ________ across the membrane.
A) carbohydrate molecules
B) water molecules
C) cations and anions
D) acids and bases
E) phospholipids and proteins
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Question 8) In a series of measurements of resting membrane potentials, the following values were recorded. Which one is likeliest to be an error?
A) -10 mV
B) -20 mV
C) -40 mV
D) -70 mV
E) +100 mV
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Question 9) The membrane potential in an undisturbed cell is called its
A) quiet potential.
B) inactive state.
C) passive state.
D) resting membrane potential.
E) interphase.
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Question 10) The electric potential difference across the cell membrane is known as
A) the membrane potential.
B) the membrane difference.
C) the cellular potential.
D) the cellular difference.
E) the plasmalemma potential.
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