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WorksheetsCell Division
Total questions: 15
Worksheet time: 30mins
Which statement is correct?
Base pairs are paired incorrectly.
Base pairs are correct.
This is incorrect because bases are missing.
By studying this photograph, scientists gained knowledge about the
role of DNA in protein synthesis
mutation of nucleotide sequences in DNA
Sequence of DNA that makes up the human genome
double-helix structure of DNA
This model of the cell cycle includes 2 arrows that each represent a process in the cycle. What do the two arrows represent?
Arrow 1 is prophase
Arrow 2 is interphase
Arrow 1 is mitosis, Arrow 2 is meiosis
Arrow 1 is Interphase, Arrow 2 is mitosis
Arrow 1 is meiosis, Arrow 2 is prophase
During which phase of the cell cycle is DNA replicated?
Mitosis
G1 phase
G2 Phase
S Phase
This part of the cell cycle is best described as the process that
Duplicates the DNA
Completes cell division
Maintains genetic homeostasis
Synthesizes new molecules
When cells leave the cell cycle, they exit during G1 and then enter G0 phase, a resting period. Most normal cells can leave G0 phase and reenter the cell cycle at G1 before entering the S phase. Cancer cells are different because they cannot enter G0. They are likely to
fail to complete S phase.
mutate during G1 phase.
repeat the cell cycle continuously.
die after completing mitosis.
How does the presence of an oncogene lead to the formation of a tumor?
ATP production is inhibited.
Cell division is unregulated.
Somatic cell growth is inhibited.
Antibody activity is unregulated.
DNA damage can turn off genes involved in cell-signaling pathways. Turning off these genes can cause less-mature cells to divide too rapidly, often leading to the development of
tumors.
allergies.
hemophilia.
cardiovascular disease.
If DNA damage is detected, the cells do not enter mitosis until the damage is repaired. Why is DNA damage repaired before cells enter mitosis?
So that another round of DNA synthesis does not have to take place.
So that the chromosomes can align at the metaphase plate during mitosis.
So that the cell can go into the G0 phase.
So that healthy daughter cells are produced, allowing the organism to continue growing.
Which cell is in the phase of mitosis that shows the spindle fibers pulling the chromosomes apart?
Cell 1
Cell 2
Cell 3
Cell 4
Which statement best describes why a cell spends the majority of its time in interphase?
The cell is growing and carrying out processes such as metabolism and DNA replication.
The cell is aging and processes are stopping as lysosomes clear dead cell matter away.
The cell needs time to synthesis spindle fibers to complete mitosis.
The cell needs time to complete cytokinesis.
Look at the diagram showing the life cycle of the frog. Which statement best explains how the cell cycle is important to the life cycle of the frog?
It enables frogs to produce tadpoles that are clones.
It allows frogs to grow, develop, and reproduce.
It prevents over production of frog offspring.
It ensures the best adapted frogs survived and pass on traits to offspring.
The part of the DNA segment labeled X is
nucleotide
phosphate group
hydrogen bond
deoxyribose
What is the genetic basis of coat-color variation in Texas Longhorn cattle?
nucleotide gene sequence difference
different number of chromosomes
difference in diets
difference in geographical environmental conditions
DNA replication matches complementary nucleotides. Which of the following is correct?
Uracil is matched to Thymine and Cytosine to Guanine
Cytosine is matched to Thymine and Uracil to Guanine.
Adenine to Thymine and Cytosine to Guanine.
Uracil to Thymine and Adenine to Guanine.
