What is the structure of DNA?
Quizs to Review for Q3 Assessment

Quiz
•
Biology
•
9th - 12th Grade
•
Easy
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Used 38+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A single strand of amino acids.
A double helix composed of nucleotides.
A triple helix of proteins.
A circular structure of lipids.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are cells?
The basic structural, functional, and biological units of all living organisms.
The smallest unit of matter that retains the properties of an element.
A type of tissue that forms the protective outer layer of organs.
A group of similar cells that perform a specific function.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many chromosomes in a human ovum (egg)?
20 chromosomes
22 chromosomes
23 chromosomes
24 chromosomes
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of helicase in the replication of DNA?
Helicase unwinds the DNA double helix.
Helicase synthesizes new DNA strands.
Helicase repairs damaged DNA.
Helicase transports DNA across the cell membrane.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens during the G1 phase of the cell cycle?
The cell divides into two daughter cells.
The cell grows and synthesizes proteins necessary for DNA replication.
The cell undergoes DNA replication.
The cell prepares for mitosis by condensing its chromosomes.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are genes inherited?
Through the transmission of genetic material from parents to offspring.
Through random mutations in the DNA sequence.
By environmental factors influencing genetic traits.
Through the mixing of parental traits without genetic material transfer.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many pairs of chromosomes do humans have?
20 pairs
22 pairs
23 pairs
24 pairs
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