ch 6 part 2 reviews

Question 1

DNA vs RNA

Answer 1

DNA is douple stranded
deoxyribose
has thymine
RNA is single stranded and ribose
has uracil
common ground : complimentary base-pairing

Question 2

complementary sequense in DNA :

Answer 2

3,5=5,3
C=G
G=C
A=T
T=A

Question 3

complementary sequense in RNA :

Answer 3

5,3=3,5
A=U
U=A
A=U
C=G
G=C
T=A

Question 4

types of RNA

Answer 4

-massenge RNA
-transfer RNA
-Ribosomoal RNA

Question 5

messenger RNA

Answer 5

-use as template for protein synthesize
-end product of transcription

Question 6

transfer RNA

Answer 6

translte mRNA sequense

Question 7

RIbosomal RNA or rRNA

Answer 7

part of the ribosome

Question 8

Synthesis of an RNA copy of a gene sequence

Answer 8

Transcription

Question 9

RNA copy is _________to DNA sequense

Answer 9

complimentary

Question 10

transcription steps ?

Answer 10

1-recognize and bind
2-transcripe
3-terminate
4-cap and edit

Question 11

transcrption step recognize and bind?

Answer 11

1-RNA polymerase recognizes a DNA sequence
2-tells RNA to start here
3-once bound RNA polymerase unwind the DNA strand
4-read base sequense

Question 12

RNA polymerase recognizes a DNA sequence called _________

Answer 12

promoter

Question 13

transcription step two transcripe ?

Answer 13

1-RNA build a cope of the gene from DNA molecules
2-complimentary bas pairing tells the enzyme which base to add
3- RNA transcript is synthesized in 5 to 3 direction

Question 14

transcrpition step 3 terminate

Answer 14

RNA polymerase recognize termination signal

Question 15

Transcription Step 4: Cap and edit

Answer 15

-in eukaryotic before translation the mRNA is processed
-addition of 5-G cap
-addition of poly A tail to 3
-mRNA splicing : eukaryotic RNA contains introns that need to be removed

Question 16

translation is

Answer 16

RNA sequence is translated into amino acid sequence

Question 17

translation require ?

Answer 17

-mRNA template
-ribosome
-tRNA and their associated amino acid

Question 18

the genetic code

Answer 18

1-20 different amino acids used to build proteins
2-4 nucleotide to code for these amino acid

Question 19

Scientists found that each amino acid is coded for by a triplet code of 3 nucleotides :

Answer 19

1-called codons
2-64 codons
3-mRNA is read in groups of 3 nucleotide

Question 20

transfer RNA

Answer 20

molecules translte the mRNA code by link specific bases on the the mRNA specific amino acid that will be used to build a protein

Question 21

amino acid code :