Bio (Exam 4) Gene Expression: Transcription

Question 1

What comes first? Translation or Transcription?

C and L

Answer 1

TransCription

Question 2

What is a gene expression?

Answer 2

using DNA to make protein

Question 3

4 types of RNA result from transcription

Answer 3

1. rRNA
2. mRNA
3. tRNA
4. snRNA

Question 4

What are the tree steps in gene expression?

Answer 4

1. DNA
2. RNA
3. Protein

Question 5

TATA box

Answer 5

non coding DNA sequence

Question 6

what is the function of a tata box

Answer 6

it helps bind transcription factors to the promoter region

Question 7

3 ingredients for transcription

Answer 7

1. Initiation
2. Elongation
3. Termination

Question 8

RNA processing happens where?

Answer 8

nucleus

before mRNA exits through a nucleur pore

Question 9

RNA processing

Answer 9

1. modify 5’ and 3’ end of RNA
2. splicing (remove introns)

Question 10

End modification of mRNA

Answer 10

1. 5’ - cap
2. 3’ - polyA tail

Question 11

End modification of mRNA functions

hint: 3

Answer 11

1. protects mRNA from degradations
2. regulate export of mRNA out of nucleus
3. help ribosome attach to 5’ end of mRNA

Question 12

splicing

Answer 12

remove introns from mRNA

Question 12

exon

Answer 12

RNA sequences (in mRNA) tht code for protein

used for translation

Question 13

intron

Answer 13

RNA sequences (in mRNA) that do not code for protein

Question 14

splicesome

Answer 14

removes introns from mRNA and joins exons together to make mature mRNA transcript

Question 15

RNA processing only happens in….

Answer 15

Eukaryotic cells

Question 16

genetic code

Answer 16

is redundant but not ambiguous

Question 17

transfer RNA (tRNA)

Answer 17

deliver amino acids to ribosomes during translation