DNA replication and review

In eukaryotes, DNA

• is located in the nucleus

• floats freely in the cytoplasm

• is located in the ribosomes

• is circular

DNA replication results in two DNA molecules,

• each with two new strands.

• one with two new strands and the other with two original strands.

• each with one new strand and one original strand.

• each with two original strands.

In both prokaryotes and eukaryotes, how many copies of the DNA are left after replication?

• 1

• 2

• 3

• 4

What type of sugar is in DNA?

• glucose

• lactose

• deoxyribose

• ribose

To begin DNA replication, we first need to unzip the double helix ladder of DNA. What enzyme is responsible for unzipping the DNA strands?

• histones

• DNA helicase

• DNA polymerase

• chromatin

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases:

• AGCTTG

• GATCCA

• TCGAAC

• GAUCCA

What are the nucleotides made of?

• Sugar, Phosphate, nitrogen base
• Phosphate, Adenine, nitrogen base
• Thymine, Adenine, Cytomine
• Phosphate, Nitrogen, Adenine

What is the shape of DNA?

• Single helix
• Double helix
• Triple helix
• Double spiral

What makes up the rungs (steps) of a DNA ladder?

• sugars & phosphates

• nitrogen bases

• sugars

• genes & chromosomes

In DNA. what base always pairs with A?

• A

• T

• C

• G