This set of MCQs helps you brush up on important biology topics and prepare you to dive into skill practice.
Which of the following best describes a DNA molecule?
Contains ribose
Contains Uracil
Double helix
Made of amino acids
Adenine bonds with ______________.
Adenine
Cytosine
Thymine
Guanine
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of,
Uracil
Guanine
Thymine
Cytosine
Which of the following units are repeatedly joined together to form a strand of DNA?
Polysaccharides
Nucleotides
Amino acids
Fatty acids
Which organelle is DNA usually found in?
Vacuole
Cell membrane
Chloroplast
Nucleus
How many types of RNA are there?
0
3
20
18
What type of sugar forms the DNA backbone?
Glucose
Ribose
Polymerase
Deoxyribose
Which type of RNA functions as a blueprint for DNA?
rRNA
tRNA
DNA Polymerase
mRNA