DNA Structure and Replication LC

What SHAPE is DNA?

• single strand

• straight ladder

• double helix (twisted ladder)

• DNA has no shape

Tags

DNA

Nitrogenous bases are joined by which type of bond?

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

Tags

DNA

Cytosine always pairs with

• Adenine
• Thymine
• Uracil
• Guanine

Tags

DNA

The picture below shows the steps of DNA replication beginning with step one and ending with step three.

​Because you are reusing the old, or parent, DNA strand DNA replication is said to be

• Semi- Conservative

• Semi-discontinuous

• Continuous

• Fully-Conserveative

Tags

DNA

Which enzyme is responsible for adding the free nucleotides to the replicating DNA? ​

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase

Tags

DNA

Choose the correct complementary nucleotide sequence for the following:

GGG - ACT - TTT

• CCC - TGA - AAA

• AAA - CAG - GGG

• TTT - CAT - GGG

• GGG - TGA - CCC

Tags

DNA

According to the Base pair rule, if a DNA molecule contains 1500 adenines how many thymine's will it contain?

• 1500

• 500

• 0

• 1000

Tags

DNA

Nucleotides consist of all of the following except:

• a phosphate

• a sugar

• a base

• a nucleic acid

Tags

DNA

The enzyme that unzips DNA during replication is called:

• helicase

• zipase

• DNA polymerase

• ligase

Tags

DNA

What is the backbone of DNA made of?

• sugar and phosphate

• nitrogen bases

• sugar and nitrogen bases

• phosphate and nitrogen bases

Tags

DNA