HHB 1.2 Structure & Replication of DNA

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

• deoxyribose sugar and adenine
• deoxyribose sugar and a hydrogen bond
• deoxyribose sugar and the nucleus
• deoxyribose sugar and phosphate

Nitrogenous bases are joined by which type of bond?

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

Tags

NGSS.MS-LS3-1

NGSS.MS-PS1-1

What are the three components of a nucleotide?

• sugar, hydrogen, nitrogenous base

• sugar, oxygen, nitrogenous base

• sugar, phosphate, nitrogenous base

• sugar, phosphate, protein

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

• nitrogenous base
• nucleic acid
• cholesterol
• fatty acid

What is the complement to the DNA strand below:
5'-ATGCCAT-3'

• 5'-TACGGTA-3'
• 3'-TACGGTA-5'
• 3'-ATGGCAT-5'
• 5'-ATGGCAT-3'

Which of the following is not a nitrogenous base found in DNA?

• Thymine

• Uracil

• Guanine

• Adenine

Which of the following is a base pair?

• Adenine - Cytosine

• Cytosine - Thymine

• Deoxyribose - Cytosine

• Cytosine - Guanine

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

a ______ is a section of DNA that codes for a particular protein.

• Gene

• Chromosome

• Pedigree

• Protein

Which enzyme is responsible for adding bases?

• Topoisomerase

• DNA Polymerase

• Ligase

• Primase