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WorksheetsReview: Quiz 6
Total questions: 25
Worksheet time: 13mins
Which replication protein breaks hydrogen bonds?
Helicase
Topoisomerase
Primase
DNA Polymerase I
Why must the primer replaced in DNA replication?
It is too short
It is made of ribonucleotides
It is made of uracil
It does not need to be replaced
Which of the following is TRUE of the leading strand?
It contains Okasaki fragments
It needs ligase
It is synthesized towards the replication fork
It is synthesized in the 3' to 5' direction
_______ is the enzyme that closes the gaps between ___________ on the lagging strand.
DNA Polymerase I ; Okasaki fragments
Ligase ; RNA primers
Primase ; RNA Primers
Ligase ; Okasaki fragments
What is the function of topoisomerase?
To relieve tension from twisting
To break hydrogen bonds
To unwind the DNA double helix
To hold the single strands of DNA apart
DNA polymerase _______ synthesizes the daughter strand, and DNA polymerase _______ replaces RNA primer with DNA nucleotides
I ; III
I ; II
III ; II
III ; I
TRUE or FALSE: DNA is synthesized from the 5' to 3' direction.
True
False
Which of the following enzymes are used in DNA replication? Select all that apply.
Helicase
ATP synthase
Primase
RNA polymerase
DNA polymerases
What is the goal of mitosis?
To produce genetically unique cells
To produce genetically identical cells
To produce cells used for sexual reproduction
To produce cells uncontrollably
DNA replication is __________.
Conservative
Semi-conservative
Dispersive
Random
Sister chromatids are genetically _________ and homologous chromosomes are genetically _________.
Unique ; unique
Unique ; identical
Identical ; unique
Identical ; identical
The presence of sister chromatids indicates that _________ has occurred.
Mitosis
Meiosis
Gene expression
DNA replication
What are sex cells (sperm and egg) called?
Autosomes
Sex chromosomes
Somatic cells
Gametes
In which phase of mitosis do the sister chromatids separate?
Prophase
Metaphase
Anaphase
Telophase
This cell has _______ chromosomes and _______ chromatids.
2 ; 2
1 ; 2
1 ; 4
2 ; 4
4 ; 4
This cell is ________.
Haploid (n)
Haploid (2n)
Diploid (n)
Diploid (2n)
If n=12, the haploid value is _____ and the diploid value is ______.
6 ; 12
12 ; 12
12 ; 24
6 ; 24
In plant cell mitosis, which organelle produces and releases cell wall materials?
Rough ER
Smooth ER
Mitochondria
Golgi apparatus
Which mitotic checkpoint ensures the DNA is replicated properly?
G1 checkpoint
S checkpoint
G2 checkpoint
Mitosis checkpoint
In which phase is DNA replicated for mitosis?
G1
S
G2
M
Which mitotic checkpoint ensures the spindle fibers are attached to chromosomes correctly?
G1 checkpoint
S checkpoint
G2 checkpoint
Mitosis checkpoint
Select all of the phases that are part of interphase.
G1
S
G2
M
Which of the following is TRUE of mitosis in animal cells?
There is no cleavage furrow
Cell wall materials are released in vesicles
Polar fibers push the poles apart
Astral fibers pull sister chromatids apart
Homologous chromosomes are only in _______ cells, and sister chromatids are only in ______ chromosomes.
Haploid; unreplicated
Haploid; replicated
Diploid; unreplicated
Diploid; replicated
What would happen if primase was dysfunctional?
The hydrogen bonds of the double helix would reform
RNA primer would not be laid down
The Okasaki fragments would not be fused
Twisting tension would damage the DNA
