DNA RNA Base Pairing

This scientist determined that the DNA from any organism contains the same amount of guanine as the amount of cytosine?

• Franklin

• Chargaff

• Crick

• Watson

What did Rosalind Franklin contribute to the understanding of DNA molecules?

• An image indicating the shape of a DNA molecule

• An analysis of the chemical makeup of a DNA molecule

• A thought that DNA carries genetic information

• A theory about how DNA conveys genetic information

Because of complementary base pairing, the amount of-

• adenine equals the amount of guanine

• cytosine equals the amount of thymine

• thymine equals the amount of adenine

• guanine equals the amount of uracil

What is a characteristic of uracil?

• The ability to bond with guanine

• The ability of bond with cytosine

• The ability to bond with thymine

• The ability to bond with adenine

Which of the following sequences represent the complementary DNA sequence to the DNA strand-- AGA TCC GTA?

• TCA TGG CAT

• AGT AGG CTA

• TCT AGG CAT

• CTC GAA TAT

Complementary base pairing links together-

• sugars

• phosphate groups

• amino acids

• nitrogenous bases

A scientist discovers that the strand of DNA the research team is using has 20% guanine and 20% cytosine. What percentage of adenine and thymine will it contain?

• 40% adenine, 40% thymine

• 40% adenine, 20% thymine

• 20% adenine, 40% thymine

• 30% adenine, 30% thymine

Proteins are formed from monomers (subunits) called-

• amino acids

• nucleic acids

• nucleotides

• fatty acids

Tags

NGSS.HS-LS1-6

What statement about the structure of DNA is NOT true?

• Long strands of DNA are twisted in the form of a double helix.

• DNA is made of linked nucleotides which are each made of a sugar, a phosphate and a nitrogen base

• DNA contains four different nitogen bases in including adenine, guanine, cytosine and uracil.

• DNA consists of two strands joined togetehr by complimentary base pairing.

Which RNA strand is complementary to this DNA sequence -ACGAT-

• ACGAU

• ACGAT

• TGCTA

• UGCUA