1.3 Gene Expression

Question 1

Gene expression is

Answer 1

Process when specific genes are activated to produce required protein

Question 2

RNA stands are ?

Answer 2

Single stranded

Question 3

DNA stands are?

Answer 3

Double stranded

Question 4

RNA has sugar Called

Answer 4

Ribose

Question 5

DNA has sugar called

Answer 5

Deoxyribose sugar

Question 6

RNA changes thymine to

Answer 6

Uracil

Question 7

MRNA is

Answer 7

Messenger RNA: linear molecule that carries a copy of the gene to be expressed by the nucleus

Question 8

TRNA is

Answer 8

Transfer RNA: is a clover leaf shape and made from single stranded RNA which folds due to base pairing

Question 9

RRNA is

Answer 9

Ribosomal RNA and protein: where protein synthesis takes place

Question 10

The coding Regions of a gene are

Answer 10

Exons

Question 11

Exons

Answer 11

The coding regions of a gene

Question 12

Non coding regions of a gene are

Answer 12

Introns

Question 13

Introns

Answer 13

Non coding regions of a gene

Question 14

RNA splicing

Answer 14

The Gene is copied to produce a primary transcript

Primary transcript of RNA is processed to remove introns and join exons to form mature mRNA

Question 15

Alternative RNA splicing

Answer 15

One gene can produce many different proteins

Question 16

Uracil

Answer 16

Base complementary to adenine in RNA

Question 17

Translation

Answer 17

Production of polypeptide using sequences of mRNA

Question 18

Transfer tRNA

Answer 18

Transfers specific amino acids to the mRNA on the ribosomes

Question 19

Transcription

Answer 19

Copying of a DNA sequence to make a primary transcript

Question 20

Stop codon

Answer 20

Triplet on the primary transcript that signals to stop translation

Question 21

Start codon

Answer 21

Triplet transcribed from DNA to a primary transcript indicating the start of a gene