Biology Quiz

What is the shape of DNA often described as?

• Double helix

• Single strand

• Triple helix

• Quadruple helix

What is an enzyme?

• A substance that regulates the rate of chemical reactions without being altered

• A type of DNA strand

• A form of protein that stores genetic information

• A molecule that carries oxygen in the blood

What does a polymerase do?

• Synthesizes long chains of polymers or nucleic acids

• Breaks down proteins into amino acids

• Transports oxygen in the blood

• Stores genetic information

Which of the following is one of the four nitrogen bases of DNA represented by the letter A?

• Adenine

• Cytosine

• Guanine

• Thymine

Which nitrogen base is represented by the letter C in DNA?

• Cytosine

• Adenine

• Guanine

• Thymine

What is the function of mRNA?

• Carry the genetic information needed to make proteins

• Store energy in cells

• Transport oxygen in the blood

• Break down nutrients in the digestive system

What is the process of making a copy of DNA called?

• Replication

• Translation

• Transcription

• Synthesis

What is a codon?

• A sequence of three consecutive nucleotides in a DNA or RNA molecule that codes for a specific amino acid

• A type of enzyme that breaks down proteins

• A molecule that carries oxygen in the blood

• A form of energy storage in cells

What is the process by which a cell makes proteins using the genetic information carried in messenger RNA (mRNA)?

• Translation

• Replication

• Transcription

• Synthesis

What are nitrogen bases in DNA responsible for?

• Forming the rungs of the DNA ladder and the genetic code

• Carrying oxygen in the blood

• Breaking down nutrients in the digestive system

• Storing energy in cells