A 5 DNA and Modern Genetics

Which molecule provides the blueprint for making proteins in an organism?

• DNA

• Amino Acids

• Enzymes

• Codons

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NGSS.HS-LS1-1

If human DNA is composed of approximately 30% Thymine, how much Guanine is likely present?

• 10%

• 20%

• 30%

• 60%

If a strand of DNA is comprised of 17% adenine, how much thymine will be present?

• 17%

• 34%

• 42%

• 83%

If a strand of DNA is comprised of 28% thymine, how much cytosine will be present?

• 14%

• 22%

• 28%

• 36%

If Cytosine and Guanine make up a total of 36% of a strand of DNA, how much Adenine will be present?

• 18%

• 32%

• 36%

• 64%

The backbone of DNA is made up of

• deoxyribose sugar, nitrogen bases, phosphate

• nitrogen bases, phosphate

• deoxyribose sugar, phosphate

• deoxyribose sugar, nitrogen bases

The rungs of DNA are made up of

• nitrogen bases, phosphate

• deoxyribose sugar, phosphate

• deoxyribose sugar, nitrogen bases

• nitrogen bases

A nucleotide consists of

• bases and a phosphate

• base and a sugar

• phosphate and a sugar

• sugar, phosphate and a base

What nitrogen bases are in DNA?

• adenine, thymine, guanine, cytosine

• adenine, uracil, guanine, cytosine

• adenine, thymine, uracil, cytosine

• adenine, thymine, guanine, uracil

Which best describes the job of DNA?

• Provides instructions for assembling protein molecules.

• Provides instructions for assembling chromosomes into histones.

• Helps with shuffling amino acids into proteins.

• Helps with relocating mRNA into physical traits.

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NGSS.HS-LS1-1