Multiple Choice: Molecular Genatics

Question 1

Structure of DNA

Answer 1

Made up of subunits called nucleotides containing a deoxyribose sugar, phosphate group and nitrogenous bases
Nitrogenous base: Adenine & Thymine, Guanine & and Cytosine

Question 2

Structure of RNA

Answer 2

Made up of subunits called nucleotides containing a deoxyribose sugar, phosphate group and nitrogenous bases
Nitrogenous base: Adenine & Uracil, Guanine & and Cytosine

Question 3

Central Dogma

Answer 3

The fundamental principle of molecular genetics, which states that genetic information flows from DNA to RNA to proteins.

Question 4

Chargaffs Rules

Answer 4

Idea of Complementary base pairing
purine and pyrimidine base pairs are linked to each other.
A&T/U , G&C
The symmetry is key to the structure of DNA and its ability to divide itself accurately and convey genetic information.

Question 5

Complimentary base pairing

Answer 5

A&T, A&U, G&C

Question 6

Mutation types (Pg. 341 Textbook)

Answer 6

Point: a change in a single nucleotide in a gene through substitution, insertion and deletion
Missense: change in a single amino acid
nonsense: a change results in a premature stop codon.
silent: change does not affect the functioning of the gene.
frameshift: one or more nucleotides are inserted into are deleted causing a shift.

Question 7

recognition sites for restriction enzymes

Answer 7

located on dna molecules contains 4-8 base pairs sequences