What is DNA

Multiple Choice

Why is the discovery that DNA stores and transmits genetic information significant for our understanding of heredity?

• Because it explains how traits are passed from one generation to the next

• Because it shows how proteins are made in the cell

• Because it describes how cells divide

• Because it explains the structure of the cell membrane

Multiple Choice

Which of the following is NOT one of the three main functions of DNA?

• Storing genetic information

• Copying genetic information

• Expressing genetic information

• Digesting nutrients

Multiple Select

Which of the following pairs of nitrogenous bases are correctly matched according to DNA base pairing rules?

• Adenine - Thymine

• Guanine - Cytosine

• Adenine - Cytosine

• Guanine - Thymine

Fill in the Blanks

Nucleic acids are held together by

bonds between the nucleotides.

Multiple Choice

DNA strands are held together by hydrogen bonds between which pairs of nitrogenous bases?

• Adenine and Thymine; Guanine and Cytosine

• Adenine and Guanine; Thymine and Cytosine

• Adenine and Cytosine; Guanine and Thymine

• Thymine and Guanine; Adenine and Cytosine

Multiple Choice

What is the main function of DNA as discovered by scientists after studying how bacteria could be altered and transferred?

• DNA stores and transmits genetic information

• DNA provides energy for the cell

• DNA acts as a structural component of the cell

• DNA digests nutrients in the cell

Multiple Choice

_____________________ carries information for inherited traits.

• DNA
• FBI
• RNA
• CBS

Multiple Choice

A nucleotide is made up of three parts:  which of these is not one of those parts?

• sugar
• phosphate
• amino acids
• base

Multiple Choice

A strand of DNA that looks like a twisted ladder is called a _____________________

• triple twist
• corkscrew
• double helix
• chain reaction

Multiple Choice

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine

Multiple Choice

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

Multiple Choice

What are the 4 nitrogen bases?

• adenine, thymine, cytoplasm, and guanine
• adenine, thymine cytosine, and guanine
• adenine, thymine, cytosine, and gylcerol
• adenine, thymine, cytosine, and glucose

Multiple Choice

Why is DNA important?

• it is very small and very complicated
• it's in everything
• it serves as the blueprint for traits of all living things
• because we eat it every day for energy