DNA & RNA

Question 1

Function of DNA

Answer 1

Contains the code for amino acids

Question 2

Where is RNA but no DNA found in eukaryotic cells

Answer 2

Ribosome and cytoplasm

Question 3

Location where formation of mRNA takes place

Answer 3

Nucleus

Question 4

Codon

Answer 4

A sequence of three bases of DNA or RNA

Question 5

Peptide Bonds

Answer 5

Bonded together to form part of the new protein

Question 6

(Exam Q)
Name the biologically active entities, each of which contains only one type of nucleic acid

Answer 6

Viruses

Question 7

(Exam Q)
Name two locations in eukaryotic cells where RNA but no DNA is found

Answer 7

Ribosome/cytoplasm

Question 8

Histone

Answer 8

Proteins responsible for holding the DNA in its genetic state

Question 9

Non-coding DNA

Answer 9

Doesn’t cause the production of protein

Question 10

Genetic code

Answer 10

• Sequence of bases in DNA
• Provide the instructions to form protein (using RNA)

Question 11

Allele for colour blindness

Answer 11

Recessive

Question 12

Mother genotype

Answer 12

Heterozygous

Question 13

Hydrogen Bond

Answer 13

Joins the two strands of a DNA molecule

Question 14

Components of DNA

Answer 14

Deoxyribose
Phosphate

Question 15

Stages of protein-synthesis

Answer 15

Transcription- occurs in the Nucleus
Translation- Occurs in the ribosome

Question 16

Base present in DNA but not RNA

Answer 16

Thymine

Question 17

DNA Replication

Answer 17

The production of double stranded chromosomes from single stranded chromosomes
-Takes place in the nucleus

Question 18

tRNA

Answer 18

Carries complementary bases to the mRNA molecule

Question 19

DNA Base sequence

Answer 19

G-C
T-A
C-G
A-T

Question 20

RNA Base sequence

Answer 20

G-C
C-G
A-U
U-A