1.3 - Gene Expression

Question 1

Unit of polypeptide structure.

Answer 1

Amino acid

Question 2

Sequence of three bases on tRNA that codes for a specific amino acid.

Answer 2

Anticodon

Question 3

Site on a transfer RNA molecule to which a specific amino acid binds.

Answer 3

Attachment site

Question 4

Sequence of three bases on mRNA that codes for a specific amino acid.

Answer 4

Codon

Question 5

Sequence of DNA that codes for protein.

Answer 5

Exon

Question 6

Transcription and translation of a gene to synthesise proteins.

Answer 6

Gene expression

Question 7

Non-coding sequence of DNA.

Answer 7

Intron

Question 8

Carries a copy of the DNA code from nucleus to ribosome.

Answer 8

Messenger RNA (mRNA)

Question 9

Strong chemical link between amino acids in the primary structure of a polypeptide.

Answer 9

Peptide bond

Question 10

Outward appearance of an organism.

Answer 10

Phenotype

Question 11

Short strand of amino acids

Answer 11

Polypeptide

Question 12

Changes made to polypeptides following translation.

Answer 12

Post-translational modification

Question 13

Molecule made when DNA is transcribed.

Answer 13

Primary transcript

Question 14

Type of RNA that makes up ribosomes.

Answer 14

Ribosomal RNA (rRNA)

Question 15

Site of protein synthesis; composed of rRNA and protein.

Answer 15

Ribosome

Question 16

Ribonucleic acid; occurs in several forms in cells

Answer 16

RNA

Question 17

Enzyme involved in synthesis of primary transcripts from DNA.

Answer 17

RNA polymerase

Question 18

Joining of exons following the removal on introns from a primary transcript.

Answer 18

RNA splicing

Question 19

Copying of DNA sequences to make a primary transcript.

Answer 19

Transcription

Question 20

Transfers specific amino acids to the mRNA on the ribosomes.

Answer 20

Transfer RNA (tRNA)

Question 21

Production of a polypeptide at a ribosome using information encoded in mRNA.

Answer 21

Translation

Question 22

RNA base not found in DNA

Answer 22

Uracil (U)