DNA Structure And Function

Question 1

What is DNA and what does it stand for?

Answer 1

It carries genetic information. It is deoxyribonucleic acid.

Question 2

What are chromosomes made up of?

Answer 2

DNA and proteins

Question 3

What is DNA modeled as?

Answer 3

A double helix/spiral staircase or ladder

Question 4

What are the two sides of the DNA ladder made up of?

Answer 4

Sugar and phosphate groups (deoxyribose and PO4 -3)

Question 5

What are the rungs of the ladder made up of?

Answer 5

Nitrogenous bases

Question 6

What are the four possible nitrogenous bases and their pairings?

Answer 6

Adenine and Thymine, or Cytosine and Guanine

Question 7

How are nitrogenous bases attached together?

Answer 7

Hydrogen bonding

Question 8

What is a nucleotide?

Answer 8

A nitrogenous base, deoxyribose sugar, and a phosphate group

Question 9

What are single ring structures called and which nitrogenous bases are they?

Answer 9

They are called pyrimidines and they are thymine and cytosine

Question 10

What are double ring structures called and which nitrogenous bases are they?

Answer 10

They are called purines and they are adenine and guanine

Question 11

Define semi conservative

Answer 11

When the nucleotides become unzipped when the hydrogen bonds break apart, the floating strands find a complimentary base to form a new nucleotide. Two identical helixes are formed.