1.
A) uses mitosis and meiosis. B) uses similar proteins. C) varies depending on whether the organism is a plant or an animal. D) varies depending on the function of the cell. 2.
A) metaphase B) restriction point C) interphase D) cytokinesis 3.
A) Mature nerve cells remain in G1 . B) Mature nerve cells remain in G0 . C) Mature nerve cells can only be repaired with stem cells. D) Mature nerve cells pass through mitosis too rapidly to divide. 4.
A) A with T, and C with G B) A with G, and C with T C) A with C, and T with G D) A with P, and C with T 5.
A) Replication that results in a new double helix of DNA in which one half of each strand is old DNA, and the other half is new DNA. B) Replication that occurs only in completely mature cells and ensures that no duplication errors occur. C) Replication in which each new double helix has one strand of new DNA and one strand of old DNA. D) Replication that takes half the time to create two new DNA strands. 6.
A) replication repair B) mutagenic repair C) excision repair D) chromosome segregation and excision 7.
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A) chromosome separation B) kinetochore C) chromosome combination D) telophase 8.
A) G1 B) G2 C) G0 D) S 9.
A) cyclins B) myosins C) cytokins D) actins 10.
A) They prevent cells from entering the G0 stage. B) They detect DNA damage and destroy the damaged cells. C) They speed up the cell cycle to repair damaged cells. D) They stop the cell cycle until damage or mistakes can be repaired.
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