The World RNA Hypothesis

Quiz
•
Science
•
8th Grade
•
Hard
Standards-aligned
Jerica Hoffner
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does DNA stand for?
Deoxyribonucleic Acid
Deoxyribose Nucleic Acid
Deoxyribonitrogen Acid
Deoxyribophosphate Acid
Answer explanation
DNA stands for Deoxyribonucleic Acid, which is the correct term for the molecule that carries genetic information. The other options are incorrect variations that do not accurately describe DNA.
Tags
DOK Level 1: Recall
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is NOT a part of a nucleotide in DNA?
Deoxyribose
Phosphate group
Ribose
Nitrogen-containing base
Answer explanation
Ribose is not part of a DNA nucleotide; instead, DNA contains deoxyribose. The other components of a DNA nucleotide are a phosphate group and a nitrogen-containing base.
Tags
DOK Level 1: Recall
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Identify the nitrogen-containing base that is NOT found in DNA.
Adenine
Guanine
Cytosine
Uracil
Answer explanation
Uracil is a nitrogen-containing base found in RNA, not DNA. DNA contains adenine, guanine, and cytosine, but uracil is replaced by thymine in DNA.
Tags
DOK Level 1: Recall
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the primary function of DNA in living organisms?
To store energy
To provide structural support
To hold instructions for growth and function
To transport oxygen
Answer explanation
The primary function of DNA is to hold instructions for growth and function. It contains the genetic blueprint that guides the development and functioning of all living organisms, making it essential for life.
Tags
DOK Level 1: Recall
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which sugar is found in the structure of DNA?
Ribose
Glucose
Deoxyribose
Fructose
Answer explanation
The sugar found in the structure of DNA is deoxyribose. Unlike ribose, which is found in RNA, deoxyribose lacks one oxygen atom, making it essential for the stability and structure of DNA.
Tags
DOK Level 1: Recall
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Explain how the sequence of bases in DNA determines the sequence of amino acids in a protein.
The sequence of bases in DNA is transcribed into mRNA, which is then translated into a sequence of amino acids.
The sequence of bases in DNA directly forms amino acids.
The sequence of bases in DNA is converted into lipids, which then form amino acids.
The sequence of bases in DNA is used to create carbohydrates, which then form amino acids.
Answer explanation
The correct choice explains that the DNA sequence is first transcribed into mRNA. This mRNA is then translated into a sequence of amino acids, which form proteins, highlighting the central dogma of molecular biology.
Tags
DOK Level 2: Skill/Concept
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Compare DNA and RNA in terms of their sugar components.
Both DNA and RNA contain deoxyribose.
DNA contains deoxyribose, while RNA contains ribose.
Both DNA and RNA contain ribose.
DNA contains ribose, while RNA contains deoxyribose.
Answer explanation
DNA contains deoxyribose, which lacks one oxygen atom compared to ribose found in RNA. This key difference in sugar components is crucial for the structural and functional roles of these nucleic acids.
Tags
DOK Level 2: Skill/Concept
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