History, Function and Structure of DNA! Chapter #13

DNA is a directional molecule. The end with the red circle is the

• 5' end.

• 3' end.

• phosphate end.

• sugar end.

Tags

NGSS.HS-LS1-1

Is structure X a purine or a pyrimidine?

• Purine

• Pyrimidine

Is structure W a purine or a pyrimidine?

• Purine

• Pyrimidine

What is structure Z?

• Nitrogen Base

• Sugar

• Phosphate

• Hydrogen Bond

Tags

NGSS.HS-LS1-1

What is structure Y?

• Nitogenous Base

• Sugar

• Phosphate

• Hydrogen Bond

Tags

NGSS.HS-LS1-1

What type of bonds occur between structures W and X?

• Hydrogen Bonds

• Covalent Bonds

• Ionic Bonds

• Phosphodiester Bonds

Tags

NGSS.HS-PS1-2

What type of bond occurs between Z of one nucleotide and structure Y of the next?

• Hydrogen Bonds

• Covalent Bonds

• Ionic Bonds

• Van der Waals Forces

Based on the length of the base labeled X and the number of bonds it shares with W, what is the name of this base?

• Adenine

• Thymine

• Cytosine

• Guanine

Tags

NGSS.HS-LS1-1

Because the two strands of DNA run in opposite directions, we say that they are

• semi-conservative

• anti-parallel

• double helix

• replicating

Letter d represents the beginning of the area of the original DNA molecule that has been unzipped to allow for replication. It is known as the

• okazaki fragment

• leading strand

• lagging strand

• replication fork