Transcription - 17.1, 17.2

Question 1

Genes provide

Answer 1

Instructions for making specific proteins - but not the gene

Question 2

Transcription

Answer 2

Synthesis of RNA using information in the DNA

“rewriting”

Question 3

mRNA

Answer 3

Transcript of the gene’s protein-building instructions

Carries genetic message from the DNA to the protein synthesizing machinery of the cell

Question 4

Translation

Answer 4

Synthesis of a polypeptide using the information in the mRNA

mRNA to amino acid sequence of a polypeptide

Question 5

Site of translation

Answer 5

Ribosomes - complex particles that facilitate the orderly linking of amino acids into polypeptide acids

Question 6

How many amino acids

Answer 6

20

Question 7

Triplet code

Answer 7

Genetic instructions for a polypeptide chain are written in the DNA as a series of non overlapping, three nucleotide words

Question 8

template strand

Answer 8

Provides the pattern/template for the sequence of nucleotides in RNA transcrit

Question 9

mRNA nucleotide triplets are called

Answer 9

codons

Question 10

mRNA written in which direction

Answer 10

5’-3’

Question 11

met/start codon

Answer 11

AUG

Question 12

Stop codons

Answer 12

3- UAA,UGA,UAG

Question 13

RNA polymerase

Answer 13

Pries 2 strands of DNA apart and joins together RNA nucleotide. Doesn’t need a primer

Question 14

Initiation

Answer 14

Rna polymerase binds to promoter, DNA strands unwind, polymerase initiates RNA synthesis

Question 15

Elongation

Answer 15

Codon recognition, peptide bond formation, translocation

Question 16

Termination

Answer 16

RNA transcript is released, polymerase detaches from DNA

Question 17

promoter

Answer 17

DNA sequence where RNA polymerase attaches and initiations transcription (upstream from terminator)

Question 18

Terminator

Answer 18

Sequence that signals the end of transcription

Question 19

transcription unit

Answer 19

Stretch of DNA downstream from the promoter that is transcribed into and RNA molecule

Question 20

start point

Answer 20

nucleotide where RNA synthesis actually begins

Question 21

transcription factors

Answer 21

Mediate the binding of RNA polymerase and the initiation of transcription