UNIT 3: CELL CYCLE, CANCER, DNA STRUCTURE and REPLICATION - PAP
Authored by Christian Lewis
Science
9th Grade
NGSS covered
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which phase of the cell cycle is responsible for DNA replication?
G1 phase
S phase
G2 phase
M phase
Answer explanation
The S phase of the cell cycle is specifically designated for DNA replication, where the cell duplicates its genetic material in preparation for cell division.
Tags
TX.112.42.C.6.A.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common result of a disruption in the cell cycle?
Increased cell specialization
Development of diseases such as cancer
Enhanced DNA replication
Faster cell aging
Answer explanation
A disruption in the cell cycle can lead to uncontrolled cell growth, which is a hallmark of cancer. This makes 'development of diseases such as cancer' the correct answer, as it directly relates to cell cycle abnormalities.
Tags
TX.112.42.C.6.C.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme is primarily responsible for unwinding the DNA double helix during replication?
Ligase
Helicase
Polymerase
Primase
Answer explanation
Helicase is the enzyme that unwinds the DNA double helix during replication, separating the two strands to allow access for other enzymes. Ligase, polymerase, and primase have different roles in DNA replication.
Tags
TX.112.42.C.6.A.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During which stage of the cell cycle does the cell prepare for mitosis by checking for DNA errors?
G1 phase
S phase
G2 phase
M phase
Answer explanation
The G2 phase is crucial for preparing for mitosis, as it involves checking for DNA errors and ensuring the cell is ready to divide. This quality control step is essential for maintaining genetic integrity.
Tags
TX.112.42.C.6.A.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main function of the cell cycle in multicellular organisms?
To produce energy
To allow growth and repair
To digest nutrients
To remove waste
Answer explanation
The main function of the cell cycle in multicellular organisms is to allow growth and repair. It facilitates cell division, enabling organisms to grow and replace damaged or dead cells.
Tags
TX.112.42.C.6.A.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of DNA polymerase in DNA replication?
Unwinds the DNA
Adds nucleotides to the new DNA strand
Joins Okazaki fragments
Removes primers
Answer explanation
DNA polymerase is essential in DNA replication as it adds nucleotides to the growing new DNA strand, ensuring accurate copying of the genetic material. This is the primary function of DNA polymerase during replication.
Tags
TX.112.42.C.6.A.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the process of cell differentiation contribute to the development of tissues in an organism?
By producing identical cells
By allowing cells to become specialized for specific functions
By causing cell death
By preventing cell division
Answer explanation
Cell differentiation allows cells to develop specialized structures and functions, which is essential for forming various tissues in an organism. This specialization enables efficient performance of specific roles, unlike identical cells.
Tags
TX.112.42.C.6.B.
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