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WorksheetsCP bio DNA and Cell Cycle
Total questions: 22
Worksheet time: 11mins
What is the primary function of DNA within a cell?
Energy production
Cellular communication
Storage and transmission of genetic information
Waste elimination
Which scientist's rule states that in DNA the amount of adenine equals the amount of thymine, and the amount of cytosine equals the amount of guanine?
Mendel's rule
Chargaff's rule
Darwin's rule
Watson's rule
During which phase of the cell cycle does DNA replication occur?
G1 phase
S phase
M phase
Interphase
What is the main role of helicase in DNA replication?
Joining nucleotides together
Proofreading DNA strands
Unwinding the DNA double helix
Forming hydrogen bonds
Which type of DNA replication results in two daughter strands, each containing one original parent strand and one newly synthesized strand?
Conservative replication
Semi-conservative replication
Dispersive replication
Absent replication
What process immediately follows DNA replication in the cell cycle?
Translation
Transcription
Protein synthesis
Mitosis
In which phase of the cell cycle does the cell grow, carry out its normal functions, and prepare to replicate DNA?
G1 phase
S phase
M phase
G2 phase
Which enzyme is responsible for synthesizing new DNA strands by adding nucleotides during replication?
Helicase
Polymerase
Ligase
Primase
What is the purpose of cytokinesis in the cell cycle?
Replicating DNA
Dividing the cytoplasm and organelles between two daughter cells
Ensuring accurate protein synthesis
Initiating mitosis
How is cancer related to the cell cycle?
Cancer causes the cell cycle to stop
Cancer accelerates the cell cycle uncontrollably
Cancer prevents DNA replication
Cancer only affects the G1 phase
What is the end result of the cell cycle?
Death of the cell
Production of gametes
Two identical daughter cells
Halting of protein synthesis
Which enzyme is responsible for unwinding the DNA double helix during replication?
DNA ligase
DNA helicase
RNA polymerase
DNA polymerase
What event occurs during the M phase of the cell cycle?
DNA replication
Cell division
Preparation for protein synthesis
Activation of the G1 phase
Why does DNA replication occur in cells?
To repair damaged DNA
To increase the cell size
To maintain genetic continuity
To regulate cellular respiration
When does the S phase of the cell cycle take place?
Before the G1 phase
Before the G2 phase
After the G1 phase
After the M phase
During which phase of the cell cycle are chromosomes pulled apart by spindle fibers?
G1 phase
S phase
M phase
G2 phase
Which phase of the cell cycle directly precedes cytokinesis?
G1 phase
S phase
M phase
G2 phase
What is the significance of polymerase enzymes in DNA replication?
Unzipping the double helix
Providing energy for replication
Reading the DNA template and adding complementary nucleotides
Repairing damaged DNA strands
In which phase of the cell cycle does the cell prepare for mitosis?
G1 phase
S phase
M phase
G2 phase
Which of the following is NOT a component of a DNA nucleotide?
Phosphate group
Nitrogenous base
Sugar
Iron
The cell cycle consists of which phases in order?
G1, S, G2, M
G2, S, G1, M
M, G1, S, G2
S, M, G1, G2
Which enzyme is responsible for building a new DNA strand alongside the existing DNA template during replication?
RNA polymerase
Helicase
DNA ligase
DNA polymerase
