B Genetics

What is the shape of DNA often described as?

• Double helix

• Single strand

• Triple helix

• Circular

What is the role of an enzyme in chemical reactions?

• It speeds up reactions without being altered

• It slows down reactions

• It is consumed in the reaction

• It stops the reaction

What does a polymerase do?

• Synthesizes long chains of polymers or nucleic acids

• Breaks down polymers

• Transports nucleic acids

• Repairs DNA

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 a chromosome?

• Contains hundreds or thousands of genes

• Synthesizes proteins

• Regulates chemical reactions

• Forms the rungs of the DNA ladder

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

• Replication

• Translation

• Transcription

• Synthesis

What are nitrogen bases in DNA responsible for?

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

• Synthesizing proteins

• Regulating chemical reactions

• Transporting genetic information

What is the role of mRNA in the cell?

• Carry the genetic information needed to make proteins

• Form the rungs of the DNA ladder

• Regulate chemical reactions

• Synthesize nucleic acids

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

• Translation

• Replication

• Transcription

• Synthesis