Strand 1.1

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

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

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

What determines the code, or information, of a DNA molecule?

• the shape (structure) of the nitrogen bases
• the order (sequence) of the nitrogen bases
• the color of the nitrogen bases
• the frequency (number) of nitrogen bases

Tags

NGSS.HS-LS1-1

Nitrogenous bases are joined by which type of bond?

• polar bonds
• ionic bonds
• covalent bonds
• hydrogen bonds

Tags

NGSS.HS-LS1-1

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil

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

Match the following: Enzymes to Functions

• enzyme unzips DNA like a zipper, creating two single strands of DNA

• Ligase

• Enzyme that joins or glues fragments of new DNA together

• DNA Polymerase

• Enzyme that creates a starting point for DNA polymerase

• Helicase

• Builder enzyme that synthesizes new strands of DNA by adding DNA nucleotides

• Primase

What does the term semi-conservative mean?

• DNA consists of half an old strand and half a new strand and the code stays conserved.

• DNA consists of two old strands and the code stays conserved.

• DNA consists of two new strands and the code stays conserved.

• DNA consists of half an old strand and half a new strand and the code changes each time.