DNA Structure and Function 2021

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

All of the DNA found within our cells is known as our

• gene
• genome
• double helix
• chromosome

Why is the sequence of DNA important?

• it is very small and very complicated

• it's in every living thing

• it determines the type of traits and characteristics an organism has

• the sequence is exactly the same for every living thing

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

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

• deoxyribose sugars and nitrogen bases

• deoxyribose sugars and hydrogen bonds

• deoxyribose sugars and nucleotides

• deoxyribose sugars and phosphates

This enzyme breaks apart the two strands of DNA to prepare for replication

• Helicase

• Ligase

• DNA polymerase

• DNA synthase

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

Identify the correct order of DNA replication

• 3, 2, 1, 4
• 2, 1, 4, 3
• 2, 3, 1, 4
• 3, 4, 1, 2

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogen base
• sugar, oxygen, nitrogen base
• sugar, phosphate, nitrogen base
• sugar, phosphate, protein

What is the role of DNA?

• It helps break down food
• It stores energy
• it provides a code for making proteins
• It prevents pathogens from getting into the cell

Tags

NGSS.HS-LS1-1

Name this structure

• double helix

• nucelotide

• amino acid

• hydrogen bond

Tags

NGSS.HS-LS1-1