Chapter 12 Quiz 2

Beschreibung

Quiz am Chapter 12 Quiz 2, erstellt von Jack Alkema am 13/01/2017.
Jack Alkema
Quiz von Jack Alkema, aktualisiert more than 1 year ago
Jack Alkema
Erstellt von Jack Alkema vor fast 8 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
DNA replication results in two DNA molecules,
Antworten
  • each with one new strand and one original strand.
  • each with two original strands.
  • each with two new strands.
  • one with two new strands and the other with two original strands.

Frage 2

Frage
During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
Antworten
  • AGCTTG.
  • GAUCCA.
  • TCGAAC.
  • GATCCA.

Frage 3

Frage
In Figure 12–5, what is adding base pairs to the strand?
Antworten
  • DNA polymerase
  • chromatin
  • histones
  • nucleosomes

Frage 4

Frage
In Figure 12–5, what nucleotide is going to be added at point 1, opposite from thymine?
Antworten
  • cytosine
  • guanine
  • adenine
  • thymine

Frage 5

Frage
In eukaryotes, DNA
Antworten
  • is circular.
  • is located in the ribosomes.
  • is located in the nucleus.
  • floats freely in the cytoplasm.

Frage 6

Frage
In both prokaryotes and eukaryotes, how many copies of the chromosome are left after replication?
Antworten
  • 1
  • 2
  • 3
  • 4

Frage 7

Frage
Which would be greater in a eukaryote than in a prokaryote?
Antworten
  • The number of replication forks on a strand of DNA.
  • The total amount of adenines compared to thymines in a cell.
  • The percentage of guanine nucleotides.
  • The total number of base pairs in a chromosome.

Frage 8

Frage
In which cells is the accurate transmission of information most important?
Antworten
  • sex cells
  • bone cells
  • nerve cells
  • skin cells

Frage 9

Frage
Figure 12–2 shows the structure of
Antworten
  • a RNA molecule.
  • a protein molecule.
  • a DNA molecule.
  • an amino acid.

Frage 10

Frage
Which of the following is believed to be a key cause of immortalization of cancer cells in many tumours?
Antworten
  • Inactivation of the telomerase enzyme.
  • Shortening of telomeres.
  • Complete loss of telomeres.
  • Reactivation of the telomerase enzyme.

Frage 11

Frage
The replication of a DNA molecule results in four copies of the same gene.
Antworten
  • True
  • False

Frage 12

Frage
A DNA strand that had the sequence TACGTT would have a complimentary strand ATCGAT.
Antworten
  • True
  • False

Frage 13

Frage
In eukaryotes, DNA replication proceeds in one direction along the DNA molecule.
Antworten
  • True
  • False

Frage 14

Frage
Watson and Crick discovered that covalent bonds hold base pairs together at the center of a strand of DNA.
Antworten
  • True
  • False

Frage 15

Frage
The tips of chromosomes are known as [blank_start]_________________________[blank_end].
Antworten
  • telomeres

Frage 16

Frage
Eukaryotic DNA molecules need to be carefully copied and sorted, especially in the formation of [blank_start]_________________________[blank_end] cells during meiosis.
Antworten
  • sex

Frage 17

Frage
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.
Antworten
  • DNA

Frage 18

Frage
A difference between Eukaryotic DNA replication and prokaryotic DNA replication is that eukaryotic DNA replication has more [blank_start]______________________[blank_end].
Antworten
  • points of origin

Frage 19

Frage
Identify and explain two roles of the molecule, represented by the spheres in Figure 12–10. [blank_start]d[blank_end]
Antworten
  • adds bases and proofreads

Frage 20

Frage
Where does DNA replication happen for prokaryotes and that of eukaryotes?
Antworten
  • cytoplasm
  • mitocondria
  • chloroplast
  • nucleus

Frage 21

Frage
When does DNA replication happen?
Antworten
  • G1 phase
  • S phase
  • G2 phase
  • M phase
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