7361888
Descrição
Quiz por Jack Alkema, atualizado more than 1 year ago
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Criado por Jack Alkema
aproximadamente 8 anos atrás
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Questão 1
Questão
DNA replication results in two DNA molecules,
Responda
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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.
Questão 2
Questão
During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
Responda
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AGCTTG.
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GAUCCA.
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TCGAAC.
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GATCCA.
Questão 3
Questão
In Figure 12–5, what is adding base pairs to the strand?
Responda
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DNA polymerase
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chromatin
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histones
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nucleosomes
Questão 4
Questão
In Figure 12–5, what nucleotide is going to be added at point 1, opposite from thymine?
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cytosine
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guanine
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adenine
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thymine
Questão 5
Questão
In eukaryotes, DNA
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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.
Questão 6
Questão
In both prokaryotes and eukaryotes, how many copies of the chromosome are left after replication?
Responda
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1
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2
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3
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4
Questão 7
Questão
Which would be greater in a eukaryote than in a prokaryote?
Responda
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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.
Questão 8
Questão
In which cells is the accurate transmission of information most important?
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sex cells
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bone cells
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nerve cells
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skin cells
Questão 9
Responda
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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.
Questão 10
Questão
Which of the following is believed to be a key cause of immortalization of cancer cells in many tumours?
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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.
Questão 11
Questão
The replication of a DNA molecule results in four copies of the same gene.
Responda
- True
- False
Questão 12
Questão
A DNA strand that had the sequence TACGTT would have a complimentary strand ATCGAT.
Responda
- True
- False
Questão 13
Questão
In eukaryotes, DNA replication proceeds in one direction along the DNA molecule.
Responda
- True
- False
Questão 14
Questão
Watson and Crick discovered that covalent bonds hold base pairs together at the center of a strand of DNA.
Responda
- True
- False
Questão 15
Questão
The tips of chromosomes are known as [blank_start]_________________________[blank_end].
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telomeres
Questão 16
Questão
Eukaryotic DNA molecules need to be carefully copied and sorted, especially in the formation of [blank_start]_________________________[blank_end] cells during meiosis.
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sex
Questão 17
Questão
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.
Responda
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DNA
Questão 18
Questão
A difference between Eukaryotic DNA replication and prokaryotic DNA replication is that eukaryotic DNA replication has more [blank_start]______________________[blank_end].
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points of origin
Questão 19
Questão
Identify and explain two roles of the molecule, represented by the spheres in Figure 12–10. [blank_start]d[blank_end]
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adds bases and proofreads
Questão 20
Questão
Where does DNA replication happen for prokaryotes and that of eukaryotes?
Responda
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cytoplasm
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mitocondria
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chloroplast
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nucleus
Questão 21
Questão
When does DNA replication happen?
Responda
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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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