Foundations in Biology Module 3.8 Nucleic acids

Question 1

What are the 2 types of nucleic acid

Answer 1

DNA
RNA

Question 2

What are the roles of DNA and RNA

Answer 2

• Storage
• Transfer of generic information
• Synthesis of polypeptides

Question 3

What are the monomers of nucleic acids

Answer 3

Nucleotides

Question 5

What are the features of a nucleotide

Answer 5

• a pentose monosaccharide
• phosphate group
• nitrogenous base

Question 6

What are nucleotides joined together by

Answer 6

Condensation reactions

Question 7

What bond is formed between nucleotides

Answer 7

Phosphodiester bonds

Question 8

What is the only difference between deoxyribose sugar and ribose sugar

Answer 8

Deoxyribose sugar has 1 less oxygen than ribose

Question 9

Define pyrimindines

Answer 9

The smaller bases in nucleotides which contain single carbon ring structures e.g. C &T

Question 10

Define purines

Answer 10

The larger bases in nucleotides which contain double ring structures e.g A&G

Question 11

Decide a DNA molecule

Answer 11

Containd 2 strands of polynucleotides coiled in a helix

Question 12

What bond hold together the 2 strands of DNA

Answer 12

Hydrogen bonding between the bases

Question 13

The 2 strands of DNA are

Answer 13

Antiparallel

Question 14

Bases always have equal amounts of their complementary base pair

Answer 14

FACT

Question 15

What is the role of RNA

Answer 15

Transfers genetic information from DNA to the proteins that make up enzymes and tissues of the body

Question 16

After protein synthesis what happens to the RNA molecules

Answer 16

They are degraded in the cytoplasm

Question 17

Features of RNA nucleotides

Answer 17

• ribose sugar
• A,U,C,G bases
• small enough to the nucleus