DNA & Replication

How do the two sides of a DNA molecule differ?

• the As and Cs are on one side and the Ts and Gs are on the other
• one side uses the sugar ribose and the other uses deoxyribose
• the sugar phosphate strand on one side is in the middle of the molecule
• the sugar phosphate strand points in the opposite direction.

Which of the following is NOT one of the nitrogen bases found in DNA?

• thymine
• cytosine
• guanine
• quinine
• adenine

In this model of DNA, the structure labelled D is a ...

• ribosome
• amino acid
• nitrogen base
• nucleotide

Which letter indicates the deoxyribose sugar?

• D
• C
• B
• A

A nucleotide of DNA contains three components: ___ , ___, and ___ .

• ribose sugar; a phosphate group; nitrogen-containing lipid
• deoxyribose sugar; three phosphate groups; nitrogen-containing base
• ribose sugar; three phosphate groups; acid group
• deoxyribose sugar; a phosphate group; nitrogen-containing base

DNA and RNA are examples.

• nucleic acids
• proteins
• carbohydrates
• lipids

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Which of the following are NOT found in a chromosome?

• nucleotides
• proteins
• carbohydrates
• centromere
• chromatids

What is the name of the whole molecule?

• triglyceride
• DNA
• RNA
• ATP
• phospholipid

Tags

NGSS.HS-LS1-1

Letter Y is indicating this, which holds the two sides of the molecule together.

• DNA polymerase
• hydrogen bonds
• RNA
• ATP
• helicase

The proteins the DNA wraps around to make chromosomes.

• histones
• centromere
• cytokinase
• helicase
• spindle