Pasp papers 3

Question 1

Genetic code consists of sequence of:

Answer 1

4 nucleotides

Question 2

How many codons are in genetic code?

Answer 2

64, which can code various amino acids

Question 3

Genetic code is a sequence of:

Answer 3

nucleotides, which encode the amino acid sequences in the polypeptide chain

Question 4

Non sens codons do not:
but do:

Answer 4

code amino acids, but stop the process of translation

Question 5

Name the 3 non sens codons:

Answer 5

UGA, UAG, UAA

Question 6

What is Pribnow box?

Answer 6

RNA polymerase recognition binding site

Question 7

Trailer carries information about:

Answer 7

stopping of the proteosynthesis

Question 8

Coding region is transcribed from, and has:

Answer 8

DNA to mRNA
and has genetic information about proteins

Question 9

Shine-Dalgarno sequence is a part of, and does what?

Answer 9

mRNA.
Completes mRNA with 16S rRNA in the ribosome

Question 10

Promoter, leader, coding region and trailer are all transcribing to:

Answer 10

mRNA
(terminator is not)

Question 11

Transcription involves which molecules of RNA?

Answer 11

mRNA, tRNA and rRNA

Question 12

In the process of transcription the guiding strain is transcribed in which direction?

Answer 12

3’ to 5’ orientation
(mRNA is synthesized in the opposite direction)

Question 13

Transcription is a process where RNA polymerase serves as:

Answer 13

catalysator

Question 14

During transcription at first the …….. is transcribed, consisting of………. regions:

Answer 14

Promotor is transcribed as first, consisting of 2 regions

Question 15

RNA polymerase stops its activity in what region?

Answer 15

DNA region (terminator)

Question 16

Protein synthesis consists of:

Answer 16

3 steps:
initiation
elongation
termination

Question 17

In the initiation step of the protein synthesis starts with help of:

Answer 17

modified aminoacyl-tRNA

Question 18

Amino acids are transferred from the site:
(during protein synthesis)

Answer 18

site A to site P during the translocation reaction

Question 19

Enzyme peptidyl-transferase play an important role in the process of:

Answer 19

aminoacid activation