DNA Structure & Function

The structure boxed in red is called a:

• Phospholipid

• monosaccharide

• Nucleotide

• Amino Acid

Which 2 molecules forms the sides (backbone) of the DNA ladder?

• ribose (sugar) and nitrogen bases
• ribose (sugar) and phosphate
• deoxyribose (sugar) and nitrogen bases
• deoxyribose (sugar) and phosphate

Which sequence of DNA bases would form complementary base pairs with this partial DNA strand?

ATG TGA CAG

• ATG TGA CAG

• TAC ACT GTC

• GTA AGT GAC

• CAT TCA CTG

DNA replication results in two DNA molecules,

• each one with two original strands
• each one with two new strands
• each one with one new strand and one original strand
• one with two new strands and the other with two original strands

Which of the following is a correct base pair in DNA?

• Adenine - Cytosine

• Cytosine - Thymine

• Deoxyribose - Cytosine

• Cytosine - Guanine

This is what part of the nucleotide?

• phosphate group

• nitrogen base

• deoxyribose sugar

• nucleotide

Tags

NGSS.HS-LS1-1

According to Chargraff’s data that established the DNA base-pairing rules, if 30% of Jason’s DNA is made up of thymine (T) nucleotides, what approximate percent of his DNA should be made up of cytosine (C) nucleotides?

• 20%

• 30%

• 70%

• 40%

Which cell structure (organelle) contains the DNA?

• endoplasmic reticulum

• vacuole

• ribosome

• nucleus

Tags

NGSS.MS-LS1-2

The twisted ladder shape of DNA is known as a

• Double Helix
• Triple Helix
• Single Helix
• Triple Helix

What part of DNA structure stores genetic information?

• The sequence or order of nitrogen bases

• The deoxyribose sugars

• The bonds between the phosphate and the sugar

• The phosphate groups

Tags

NGSS.HS-LS3-1