DNA Pages 5-10

Question 1

What are the two types of nucleic acid and where are they found?

Answer 1

DNA-deoxyribonucleic acid-found in the nucleus

RNA-ribonucleic acid-found in the cytoplasm

Question 2

What can nucleotides be made of?

Answer 2

• 5 carbon sugar called deoxyribose
• a phosphate group
• four kinds of nitrogenous (nitrogen-containing) bases:
  
  • 2 Purines:adenine and guanine-double ring
  • 2 Pyrimidines: cytosine and thymine-single ring

Question 3

_______________ and _______________ -1953-using x-Ray photos taken of DNA by _________________.

Answer 3

James Watson, Francis Crick, Rosalind Franklin

Question 4

Double helix

Answer 4

Twisted ladder

Question 5

_________and_______ form the sides of the ladder. ___________ ____________ formed the rings of the ladder

Answer 5

Phosphate, sugar, nitrogenous bases

Question 6

Adenine pairs with

Answer 6

Thymine

Question 7

Cytosine pairs with

Answer 7

Guanine

Question 8

DNA replication

Answer 8

The process of making a copy of DNA

Question 9

Areas where the double helix separates are called ______________ because of their Y shape.

Answer 9

Replication forks

Question 10

DNA polymerase

Answer 10

Enzyme, attaches to each strand of THE separated DNA polymerase moves along the strand and “reads” each base, attaching new complementary bases according to the base pair rule.

Question 11

In conclusion ______ DNA molecules are formed, each composed of a __________________ and ______________

Answer 11

New strand, an original strand

Question 12

Nucleic acid

Answer 12

Acidic substance made up of carbon, hydrogen, oxygen, nitrogen, and phosphorus.