7361888
Descripción
Test por Jack Alkema, actualizado hace más de 1 año
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Creado por Jack Alkema
hace casi 8 años
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Pregunta 1
Pregunta
DNA replication results in two DNA molecules,
Respuesta
-
each with one new strand and one original strand.
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each with two original strands.
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each with two new strands.
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one with two new strands and the other with two original strands.
Pregunta 2
Pregunta
During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
Respuesta
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AGCTTG.
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GAUCCA.
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TCGAAC.
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GATCCA.
Pregunta 3
Pregunta
In Figure 12–5, what is adding base pairs to the strand?
Respuesta
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DNA polymerase
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chromatin
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histones
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nucleosomes
Pregunta 4
Pregunta
In Figure 12–5, what nucleotide is going to be added at point 1, opposite from thymine?
Respuesta
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cytosine
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guanine
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adenine
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thymine
Pregunta 5
Pregunta
In eukaryotes, DNA
Respuesta
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is circular.
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is located in the ribosomes.
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is located in the nucleus.
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floats freely in the cytoplasm.
Pregunta 6
Pregunta
In both prokaryotes and eukaryotes, how many copies of the chromosome are left after replication?
Respuesta
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1
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2
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3
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4
Pregunta 7
Pregunta
Which would be greater in a eukaryote than in a prokaryote?
Respuesta
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The number of replication forks on a strand of DNA.
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The total amount of adenines compared to thymines in a cell.
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The percentage of guanine nucleotides.
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The total number of base pairs in a chromosome.
Pregunta 8
Pregunta
In which cells is the accurate transmission of information most important?
Respuesta
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sex cells
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bone cells
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nerve cells
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skin cells
Pregunta 9
Respuesta
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a RNA molecule.
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a protein molecule.
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a DNA molecule.
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an amino acid.
Pregunta 10
Pregunta
Which of the following is believed to be a key cause of immortalization of cancer cells in many tumours?
Respuesta
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Inactivation of the telomerase enzyme.
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Shortening of telomeres.
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Complete loss of telomeres.
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Reactivation of the telomerase enzyme.
Pregunta 11
Pregunta
The replication of a DNA molecule results in four copies of the same gene.
Respuesta
- True
- False
Pregunta 12
Pregunta
A DNA strand that had the sequence TACGTT would have a complimentary strand ATCGAT.
Respuesta
- True
- False
Pregunta 13
Pregunta
In eukaryotes, DNA replication proceeds in one direction along the DNA molecule.
Respuesta
- True
- False
Pregunta 14
Pregunta
Watson and Crick discovered that covalent bonds hold base pairs together at the center of a strand of DNA.
Respuesta
- True
- False
Pregunta 15
Pregunta
The tips of chromosomes are known as [blank_start]_________________________[blank_end].
Respuesta
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telomeres
Pregunta 16
Pregunta
Eukaryotic DNA molecules need to be carefully copied and sorted, especially in the formation of [blank_start]_________________________[blank_end] cells during meiosis.
Respuesta
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sex
Pregunta 17
Pregunta
A prokaryotic cell replicates its [blank_start]_________________________[blank_end] before it splits to form new cells, so that each new cell can have genetic material.
Respuesta
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DNA
Pregunta 18
Pregunta
A difference between Eukaryotic DNA replication and prokaryotic DNA replication is that eukaryotic DNA replication has more [blank_start]______________________[blank_end].
Respuesta
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points of origin
Pregunta 19
Pregunta
Identify and explain two roles of the molecule, represented by the spheres in Figure 12–10. [blank_start]d[blank_end]
Respuesta
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adds bases and proofreads
Pregunta 20
Pregunta
Where does DNA replication happen for prokaryotes and that of eukaryotes?
Respuesta
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cytoplasm
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mitocondria
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chloroplast
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nucleus
Pregunta 21
Pregunta
When does DNA replication happen?
Respuesta
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G1 phase
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S phase
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G2 phase
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M phase
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