Bio - DNA Structure and Replication

If RNA from a human was compared with RNA from a lizard, they would both have

• deoxyribose sugar and thymine base

• Ribose sugar and thymine base

• Deoxyribose sugar and uracil base

• Ribose sugar and uracil base

Which of the following is NOT a difference between DNA and RNA

• The four nitrogen bases

• The sugar found in the backbone

• The number of strands

• The type of phosphate

A monomer of DNA is called a(n)

• Monosaccharide
• Amino Acid
• Triglyceride
• Nucleotide

Nitrogenous bases are joined by which type of bond?

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

Tags

NGSS.HS-LS1-1

Nucleotides are made up of a sugar, phosphate, and..?

• nitrogenous base
• nucleic acid
• cholesterol
• fatty acid

A five-carbon sugar found in DNA.

• ribose
• guanine
• deoxyribose
• helicase

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

Guanine bonds with ______________.

• Adenine
• Guanine
• Cytosine
• Thymine

which of the following structural features of DNA is most important for its ability to replicate accurately?

• DNA contains the deoxyribose instead of the sugar ribose

• Two hydrogen bonds connect adenine-thymine base pairs, and three hydrogen bonds connect guanine-cytosine base pairs

• Because of the base pairing rules, each strand has the information necessary to make the opposite strand

• The sugar-phosphate backbones are positioned anti-parallel to each other

Which best describes semi-conservative replication?

• Each template strand is broken apart into separate nucleotides that are used to make both strands of the new DNA molecule from scratch

• Each template strand is broken into short fragments that are randomly assembled into 2 different molecules

• Each new strand is associated with another new strand to form one new double helix

• each new strand is paired with an old template strand to form two copies of the original double helix