Question

Steps of Transcription….

1. What happens to the DNA molecule at the beginning of transcription?
~~RNA polymerase binds to a DNA molecule and separates its 2 strands.

2. Then one strand of DNA serves as a template for?
~~One strand of DNA serves as a template to assemble nucleotides together into a complementary mRNA strand.


3. In the strand that is formed, the base pairing for the nitrogenous bases is…
~~T-A, A-U, G-C, C-G

4.What signals the beginning and end of transcription?
~~Codons

@Somy @Abhisar

Answer 1

Can you check if this is right?

Answer 2

At least #s 3-4.

Answer 3

Yes ur answer for 3 is correct !

Answer 4

wait

Answer 5

4 is wrong

Answer 6

Can you explain?

Answer 7

they are asking for specific codon

Answer 8

if i remember correctly starting codon is AUG

Answer 9

So would it be Stop/Start codon or Start=AUG, Stop=UAA, UAG, and UGA

Answer 10

and there are 3 ending codons

Answer 11

thats right :)

Answer 12

It's Transcription !

Answer 13

@Abhisar Does that only happen in translation, then?

Answer 14

oh lol AB is right

Answer 15

hmmm but u can't really say codons also

Answer 16

yes codon is wrong answer !

Answer 17

so what would the answer be?

Answer 18

I found this online:

transcription terminator sequence signals the end of transcription

Answer 19

is that correct?

Answer 20

The DNA-dependent RNA polymerase binds with promoter and initiates transcription

Answer 21

hmmm http://www.its.caltech.edu/~bi1/archives/files_2011/lectures/lecture9/lecture9.pdf

Answer 22

@Somy u go to caltech?

Answer 23

no lol i just looked up in google

Answer 24

The sigma subunit of RNA polymerase is the part of the enzyme responsible for recognizing the signal on the DNA strand that tells the polymerase to begin synthesizing RNA. It is through this sigma unit that RNA polymerase is able to initiate transcription.dddd

Answer 25

Actually promoter region on the DNA strand signals the initiation

Answer 26

and terminator region signals termination

Answer 27

\(\bf Diff~btwn~Start/Stop~codon~and~Promoter/Terminator\)
The promoter and terminator tells the RNA polymerase where to start and where to end, whereas the start and stop codons tells the ribosome the same things. the promoter and terminator sequences will be taken off the mRNA before it leaves the nucleus.

Answer 28

all clear ?

Answer 29

yes thanks @Abhisar and @Somy

Answer 30

u r welcome :))

Answer 31

\(\color{red}{\huge\bigstar}\huge\text{You are Most Welcome! }\color{red}\bigstar\)
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