Nucleic Acids

Question 1

Fredrick Griffith

Answer 1

Heat killed S strain (virulent) mixed with benign strain killed the mouse

Suggests that the s strain passed on some information to the benign strand

Question 2

Avery

Answer 2

wanted to find out if RNA DNA or proteins were responsible for transformation

Found that in extracts where DNA was killed, there was no transformation

Question 3

Structure of DNA

Answer 3

Double helix
Phosphate group
5 carbon deoxyribose sugar 
Nitrogenous base 
Phosphodiester bonds between two nucleotides

Question 4

Purines

Answer 4

Adenine & guanine

Two rings

Question 5

Pyrimidines

Answer 5

One ring

Cytosine and thymine

Question 6

mRNA

Answer 6

Single stranded

Copy of gene that codes for a protein

Translated into proteins by ribosomes

Question 7

tRNA

Answer 7

Folds into 3D structure held together by base pairing

Functional RNA that is never translated

Attaches to amino acids and brings them to ribosome during translation

Question 8

rRNA

Answer 8

functional RNA
3 different molecules make up integral parts of ribosome

Form ribosome complexes that perform translation