chapter 5.4 - 5.6

Question 1

which direction is RNA synthesized

Answer 1

5’ to 3’

Question 2

what are the 3 phases of transcription

Answer 2

1. initiation
2. elongation
3. termination

Question 3

what is transcription

Answer 3

the whole process by which the nucleotide sequence of an mRNA is used as a template to join the amino acids in a polypeptide chain in the correct order

Question 4

what is mRNA

Answer 4

carries the genetic information transcribed from DNA in a linear form

Question 5

what is tRNA

Answer 5

are small RNA molecules that function as amino acid donors during protein synthesis. Each tRNA becomes covalently linked to a particular amino acid, forming an aminoacyl-tRNA

Question 6

what is rRNA

Answer 6

associates with a set of proteins to form ribosomes

Question 7

what are the 3 most common STOP codons

Answer 7

UGA, UAA, UAG

Question 8

what is wobble base pairing

Answer 8

non-Watson-Crick base pairing between two nucleotides in RNA molecules

Question 9

the four main wobble base pairs are

Answer 9

guanine-uracil
inosine-uracil
inosine-adenine
inosine-cytosine

Question 10

where does aa-tRNA enter the 80s ribosome

Answer 10

at the A site