AP Biology DNA Structure

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG

• TAC ACT GTC

• GTA AGT GAC

• CAT TCA CTG

Suppose a double-stranded DNA molecule was shown to have 15% adenine bases. What would be the expected percentage of guanine bases in that molecule?

• 15%

• 35%

• 85%

• Not enough information

Which component of DNA determines the traits of an organism? 

• Nitrogen Bases

• Sugar-Phosphate Backbone

• Hydrogen bonds

Tags

NGSS.HS-LS3-1

The enzyme that unzips the DNA to prepare for replication

• helicase

• replicase

• polymerase

• synthase

DNA codes for...

• cholesterol

• proteins

• fatty acids

• a sandwich

Tags

NGSS.HS-LS1-1

Replicate the following strand of DNA: 
AATCATGGA

• AATCATGGA

• TTAGTACCT

• UUAGUACCU

• GGATAUCUA

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base

• sugar, oxygen, nitrogen base

• sugar, phosphate, nitrogen base

• sugar, phosphate, protein

Which is the best description of a gene?

• a DNA sequence that is expressed to form a functional product; either RNA or polypeptide

• a DNA subunit that codes for a single complete protein

• a DNA-RNA sequence combination that results in an enzymatic product

• a descrete unit of hereditary information that consists of a sequence of amino acids 

Tags

NGSS.HS-LS1-1

order of replication

• 3, 2, 1, 4

• 2, 1, 4, 3

• 2, 3, 1, 4

• 3, 4, 1, 2

One type of nucleotide found in DNA is composed of _______.

• Deoxyribose, Phosphate, Adenine

• Deoxyribose, Phosphate, Uracil

• Ribose, Phosphate, Adenine

• Ribose, Phosphate, Uracil