DNA Structure and Function

What kind of molecule is DNA?

• carbohydrate

• lipid

• protein

• nucleic acid

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NGSS.HS-LS1-1

What does DNA stand for?

• dextrose nucleic acid

• double nucleic acid

• deoxyribonucleic acid

• dinucleic acid

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NGSS.HS-LS1-1

What is the monomer (building block) of a DNA molecule?

• fatty acid

• nucleic acid

• nucleotide

• amino acid

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NGSS.HS-LS1-1

What sugar is found in a nucleotide of DNA?

• glucose

• dextrose

• ribose

• deoxyribose

What makes up the "backbone" of a single DNA strand?

• phosphate and sugar

• sugar and nitrogenous base

• phosphate and nitrogenous base

• ribose and deoxyribose

What kind of bonds hold together the nitrogenous bases at the center of the double helix structure?

• covalent bonds

• hydrogen bonds

• ionic bonds

What are the correct base pairs?

• A and G, C and T

• A and C, G and T

• C and G, A and T

• A and A, G and G, C and C, T and T

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NGSS.HS-LS1-1

Whose discovery about base ratios led to the rule of base pairing?

• Rosalind Franklin

• Watson and Crick

• Erwin Chargaff

• Maurice Wilkins

Who built the model of DNA using research from other scientists that helped us understand how DNA could replicate?

• Rosalind Franklin and Maurice Wilkins

• James Watson and Maurice Wilkins

• Francis Crick and Erwin Chargaff

• James Watson and Francis Crick

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NGSS.HS-LS1-1

Why can bacteria recognize a human gene and then produce a human protein?

• Cell division in bacteria and humans is the same.

• Bacterial cells contain the same organelles as human cells.

• The basic DNA components are the same in humans and bacteria.

• Bacteria and human cells have the same number of chromosomes.

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NGSS.HS-LS1-1