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Name the four different nitrogen- containing bases that are found in DNA.

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adenine, t...

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In prokaryotes, the term prokaryotic fission specifically refers to


A) the growth phase of the cell cycle.
B) the addition of a new plasma membrane between what will become two daughter cells.
C) asexual reproduction.
D) the attachment of replicated DNA to the plasma membrane.

E) A) and D)
F) All of the above

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The eukaryotic cell cycle consists of two phases, interphase and mitotic cell division. What are the substages that take place within each of these two phases?

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Interphase consists of G1, S, ...

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The site on a chromosome where microtubules attach during cell division is the


A) telomere.
B) histone.
C) chromatid.
D) locus.
E) centromere.

F) A) and C)
G) A) and E)

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Growth factors stimulate


A) the cell to ignore the checkpoints of the cell cycle.
B) cells to divide.
C) the cell to skip the S and G1 phases of interphase and undergo mitosis directly.
D) Cdks to synthesize enzymes that digest cyclins.

E) B) and C)
F) A) and D)

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Which statement is TRUE of the behavior of chromosomes in mitosis?


A) Each new cell receives copies of all the original chromosomes.
B) If the original number of chromosomes was 46, each new cell will have 23.
C) Each new cell receives half of the number of chromosomes in the original cell.
D) All chromosomes are duplicated except the sex chromosomes.
E) The sister chromosomes are not identical because of breakages in the DNA.

F) A) and D)
G) A) and C)

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Cancer is essentially


A) a never- ending repetition of the S phase of the cell cycle.
B) the binding of cyclins and Cdks.
C) the creation of extra checkpoints in the cell cycle.
D) unregulated mitotic cell division.

E) A) and B)
F) B) and C)

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The chromosomes and genes are actually replicated during


A) prophase.
B) interphase.
C) telophase.
D) metaphase.
E) anaphase.

F) All of the above
G) B) and C)

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The terminal ends or "tips" of a chromosome are called


A) chromatids.
B) centromeres.
C) genes.
D) telomeres.
E) loci.

F) A) and E)
G) C) and D)

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D

The chromatids detach from one another and become visibly separate chromosomes during


A) interphase.
B) prophase.
C) metaphase.
D) anaphase.
E) telophase.

F) B) and E)
G) C) and E)

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What sugar is found in DNA nucleotides?

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What is the longest- lasting phase of the prokaryotic cell cycle?


A) Cell growth and DNA replication
B) Fission of the plasma membranes at the cell equator
C) Meiosis
D) Prokaryotic fission

E) C) and D)
F) A) and B)

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A

Which of the following statements is FALSE?


A) Genes and chromosomes are duplicated during prophase.
B) Each species has a specific number of chromosomes.
C) Homologous chromosomes do not pair during mitosis.
D) New nuclei are formed during telophase.

E) C) and D)
F) A) and B)

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Cdks are activated only when they bind to


A) cyclin.
B) chromatids.
C) cytosine.
D) centrioles.

E) A) and B)
F) None of the above

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A phosphate group binds to what molecule to create the "backbone" of the DNA molecule?


A) Adenine
B) Other phosphate molecules
C) Ribose
D) Deoxyribose

E) A) and B)
F) C) and D)

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The spindle apparatus begins to become visible during


A) metaphase.
B) anaphase.
C) prophase.
D) interphase.
E) telophase.

F) C) and D)
G) A) and C)

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C

What does the bacterial genome consist of?


A) Several circular DNA molecules
B) One circular RNA molecule
C) One circular DNA molecule
D) Many rod- like DNA molecules with protein
E) DNA in mitochondria

F) C) and E)
G) A) and E)

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How do prokaryotic and eukaryotic chromosomes differ?


A) Prokaryotic chromosomes are not contained in a membrane- bound organelle.
B) Prokaryotic chromosomes are not made from nucleotides.
C) Eukaryotic chromosomes occur singly, and prokaryotic chromosomes occur as pairs.
D) Genetic information is stored as DNA in eukaryotic cells and as proteins in prokaryotic cells.

E) A) and B)
F) C) and D)

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Four of the five answers listed below are events occurring during mitosis. Select the exception.


A) Chromosome replication
B) Attachment of spindle microtubules to centromeres
C) Division of centromere
D) Lining up of chromosomes at the cellular equator
E) Migration of chromosomes to opposite ends of the cell

F) C) and D)
G) D) and E)

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Chromosome replication takes place during interphase.

A) True
B) False

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