DNA Review

What are the three (3) components of a nucleotide?

• Phosphate, Sugar, (Nitrogenous) Base

• Chromosome, Nucleus, Helix

• Hydrogen, Phosphate, Sugar

• Sugar, Adenine, Lipid

DNA is made of _______ strand(s), creating a _______ shape.

• one ; circular

• two ; double helix

• four ; ladder

• Too many ; complicated

Tags

NGSS.HS-LS1-1

DNA is housed in which organelle?

• Cell Membrane

• Cell nucleus

• Ribosome

• Nucleotide

Nitrogenous bases are joined by which type of bond?

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

Tags

NGSS.HS-LS1-1

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

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

Name this structure

• double helix
• nucelotide
• twisted ladder
• hydrogen bond

Tags

NGSS.HS-LS1-1

Cytosine always pairs with

• Adenine
• Thymine
• Uracil
• Guanine

Purines are:

• Characterized by their one-ring structure

• Characterized by their two-ring structure

• Pure forms of DNA

• Adenine and Guanine

In DNA Adenine would pair with:

• Cytosine

• Guanine

• Another Adenine

• Thymine

Pyrimidines are:

• Characterized by their two-ring structure

• Guanine and Adenine

• Characterized by their one-ring structure

• Thymine and Cytosine