DNA review

DNA looks and functions the same in every organism. In fact, DNA is so similar that it can be moved from one species to another and it still works!

• True

• False

Which is NOT a nitrogen base found in DNA?

• Adenine

• Thymine

• Guanine

• Uracil

Where would you find the sugars and phosphates in a DNA molecule?

• On the sides (the backbone of the helix)

• In the middle (the base pairs)

What shape is DNA?

• Circular

• Flat

• Double Helix

• Boxy

A nucleotide is one piece of DNA. What of these would be found in a nucleotide?

• A sugar

• A nitrogen base

• A phosphate

• All three of these

What are genes?

• Pieces of chromosomes that you inherit from your parents

• Instructions for how to build proteins

• Sections of DNA

• All of these are true.

Which organelle contains DNA?

• Cytoplasm

• Vacuole

• Nucleus

• Cell Membrane

Strands of tightly wound DNA are known as _______.

• Phosphates

• Nucleotides

• Chromosomes

• Sugars

DNA bases can pair randomly.

• True

• False

Which nitrogen base does adenine match?

• Guanine

• Cytosine

• Uracil

• Thymine