DNA structure
- 100
What shape does DNA have when its two strands wind around each other?
- 200
Which nitrogenous base in DNA pairs with cytosine?
- 300
Which sugar is…
In the game - 400
What weak bonds hold…
In the game - 500
How are DNA strands…
In the game
Grade 9 · Biology
Biology quiz for grade 9: Molecules of life: DNA and proteins
This quiz helps revise “Molecules of life: DNA and proteins” in Biology for grade 9. It has 25 questions in five categories: DNA structure, Copying DNA, DNA to RNA, RNA to protein, Protein shape. Questions get harder as the points go up, from 100 to 500.
A peek at the questions
The 100- and 200-point questions are open here. The rest show only their first words, and there are no answers: all of that is in the game itself.
Copying DNA
- 100
What is the process of making a copy of DNA called?
- 200
What copying model gives each new DNA molecule one old strand and one newly made strand?
- 300
Which enzyme, pictured, separates…
In the game - 400
What is the new…
In the game - 500
Which enzyme joins short…
In the game
DNA to RNA
- 100
What process makes RNA using information from one DNA strand?
- 200
Which nitrogenous base occurs in RNA instead of thymine?
- 300
Which type of RNA…
In the game - 400
Which enzyme, pictured, synthesizes…
In the game - 500
A DNA template strand…
In the game
RNA to protein
- 100
What process uses information in an RNA copy of a gene to determine the sequence of a protein chain?
- 200
Which cell structure, pictured, reads an RNA copy of a gene and assembles a protein chain?
- 300
Which RNA type carries…
In the game - 400
What is a three-nucleotide…
In the game - 500
How many of the…
In the game
Protein shape
- 100
What is a chain formed when many amino acids are linked together?
- 200
What covalent bond links neighboring amino acid residues in a protein chain?
- 300
Which level of protein…
In the game - 400
What process makes a…
In the game - 500
Which level of structure…
In the game
Play this quiz
All 25 questions and the answers are in the game. Invite your class or friends with a link — guests need no account.
How it works
- Pick a quiz and press “Play”.
- Send students or friends the link — they join from a phone or a computer.
- Choose questions on the board, buzz in first and collect points.