Molecular genetics

Question 1

DNA (deoxyribonucleic acid)

Answer 1

many genes on DNA molecule, found in nucleus of cell, a DNA molecule wraps around special proteins to form a chromosome

Question 2

Codon and amino acids

Answer 2

genetic code states which amino acids each codon codes for

Question 3

DNA structure (hydrogen bonds)

Answer 3

two DNA strands held by hydrogen bonds between the bases

Question 4

Structure of DNA (double helix)

Answer 4

2 anti parallel polynucleotide strands of the DNA molecule coil to for a double helix structure

Question 5

Complementary bases…

Answer 5

Adenine with Thymine
Cytosine with Guanine

Question 6

Structure of DNA (sugar-phosphate)

Answer 6

each polynucleotide strand consists of sugar-phosphate backbone on outside, nitrogenous base in the inside

Question 7

Translation

Answer 7

mRNA from nucleus to ribosomes. As ribosomes read mRNA sequence, ribosomes synthesise a polypeptide

Question 8

Gene

Answer 8

Sequence of nucleotides which codes for one polypeptide, eventually producing a protein.
A DNA molecule contains many genes along its length

Question 9

Transcription

Answer 9

process in which sequence of nucleotide in the gene is transcribed into mRNA
Occurs in nucleus