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WorksheetsMitosis, Mieosis, and DNA
Total questions: 25
Worksheet time: 13mins
Chargaff's rule states the following for DNA:
A=T
G=C
G=T
A=C
A=U
G=C
U=T
A=C
If the DNA sequence is A-T-C-T-A-T in one polynucleotide chain, what would the complimentary chain read?
T-A-G-A-T-A
U-A-G-A-U-A
A-T-C-T-A-T
T-A-T-U-C-A
Watson and Crick are credited with the discovery and description of the DNA
deoxyribose sugar.
phosphate group.
double helix.
hydrogen bonds.
All of the following occur during DNA replication EXCEPT
separation of parental DNA strands.
synthesis of totally new double-stranded DNA molecules.
use of DNA polymerase enzymes.
use of parental DNA as a template.
Which of the following ENZYME is NOT involved in the DNA replication process?
DNA helicase
DNA ligase
DNA polymerase
DNA replicase
What is the name of the enzyme that removes the RNA primer from the DNA strand during DNA Replication?
DNA polymerase I
DNA polymerase III
DNA ligase
DNA helicase
A DNA sequence of 5'-A-C-G-T-A-C-G-T-3' is altered to 5'-A-C-G-C-A-C-G-T-3'. This could happen as a result of a
nucleotide substitution mutation
insertion mutation
deletion mutation
inversion.
The elongation of the leading strand during DNA synthesis
occurs in the 3' → 5' direction.
depends on the action of DNA polymerase.
progresses away from the replication fork.
produces Okazaki fragments.
cell division produces two daughter cells that are genetically identical. This type of cell division is important for all of the following functions EXCEPT ________.
growth of a multicellular organism
cell replacement
production of sperm and egg
asexual reproduction
Which of the following help(s) to hold the DNA strands apart while they are being replicated?
primase
double-strand binding proteins
single-strand binding proteins
DNA polymerase
The CORRECT sequence of stages of mitosis is
prophase, metaphase, anaphase, telophase
telophase, prophase, anaphase, metaphase
anaphase, interphase, prophase, metaphase, telophase
interphase, prophase, metaphase, anaphase, telophase
Crossing over occurs during
prophase II
metaphase I
prophase I
anaphase I
Genetic variation is accomplished by all but one of the following. Choose the exception.
the events of meiosis I
crossing over
independent assortment
the events of meiosis II
What chromosomes belong to a normal human male?
23 autosomes and two Y chromosomes
44 autosomes and two Y chromosomes
44 autosomes, one X chromosome, and one Y chromosome
46 autosomes, one X chromosome, and one Y chromosome
Which of the following events occurs in meiosis but not in mitosis?
chromosome replication
condensation of chromatin
production of daughter cells
synapsis of chromosomes
Which structures is found in a pair of homologous chromosomes?
four sister chromatids
two sister chromatids that have synapsed
two single-stranded chromosomes that have synapsed
four unique chromosomes
For a chemotherapeutic drug to be useful for treating cancer cells, which of the following is most desirable?
It is safe enough to limit all apoptosis.
It targets only rapidly dividing cells.
It only attacks cells that are density dependent.
It does not affect metabolically active cells.
During mitosis in animal cells, at which phase do centrioles begin to move apart?
anaphase
metaphase
prophase
prometaphase
Which is checkpoint in the cell cycle is typically the most important?
G1
S
M
G2
The set of all Genes that are found on a molecule of DNA is know as a species
protein
family tree
heredity
genome
Which of the following best describes the function of topoisomerase during DNA replication?
Synthesizes RNA primers
Unwinds the DNA double helix
Joins Okazaki fragments
Relieves tension ahead of the replication fork
Which enzyme is responsible for unwinding the DNA double helix during replication?
DNA polymerase
DNA ligase
DNA helicase
Primase
During which phase of mitosis do chromosomes align at the center of the cell?
Prophase
Telophase
Metaphase
Anaphase
Which of the following processes results in the formation of gametes with half the number of chromosomes as the parent cell?
Budding
Binary fission
Meiosis
Mitosis
During DNA replication, which enzyme is responsible for joining Okazaki fragments on the lagging strand?
Primase
DNA ligase
Topoisomerase
DNA helicase
