https://learn.vccs.edu/courses/575662/assignments/ XXXXXXXXXX

1 answer below »

View more »
Answered Same DaySep 20, 2023

Answer To: https://learn.vccs.edu/courses/575662/assignments/ XXXXXXXXXX

Dr Shweta answered on Sep 21 2023
37 Votes
Answers:
Ans 1: In order to govern the process of transcription, both prokaryotes and eukaryotes employ proteins that function as activators, stimulating gene expression, or repressors, inhibitin
g gene expression. The following are some of the key distinctions that can be found between eukaryotic and prokaryotic transcriptional regulation:
The process of transcription is the primary regulator of gene expression in prokaryotic organisms. The expression of genes in eukaryotic organisms is regulated at several stages, including transcription, post-transcription, translation, and post-translation stages. The nucleus is the location of transcription in eukaryotic cells, whereas the cytoplasm is the location of transcription in prokaryotic cells. In the process of transcription, prokaryotes make use of sigma factors, whereas eukaryotes employ transcription factor proteins. Only prokaryotes, not eukaryotic cells, are capable of doing transcription and translation at the same time. The prevalence of repressors is higher in prokaryotes compared to eukaryotes.
Ans 2: E. coli and other bacteria include a collection of genes called the lactose operon (or lac operon) that are responsible for the absorption and metabolism of lactose. The lac operon is a set of genes that share a promoter and are thus translated into a single mRNA. Three structural genes, a promoter, a terminator, a regulator, and an operator make up the lac operon. LacZ, lacY, and lacA are the three structural genes. The gene lacZ genes for the intracellular enzyme -galactosidase (LacZ), which hydrolyses the disaccharide lactose into glucose and galactose.
Lactose and other galactosidase are transported into the cell through a proton gradient facilitated by the protein encoded by the lacY gene. The cellular permeability to galactosidase is increased by permease. The enzyme -galactosidase transacetylase (LacA) moves an acetyl group from acetyl-CoA to thiogalactoside, and it is...
SOLUTION.PDF

Answer To This Question Is Available To Download

Related Questions & Answers

More Questions »

Submit New Assignment

Copy and Paste Your Assignment Here
April
January
February
March
April
May
June
July
August
September
October
November
December
2025
2025
2026
2027
SunMonTueWedThuFriSat
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
00:00
00:30
01:00
01:30
02:00
02:30
03:00
03:30
04:00
04:30
05:00
05:30
06:00
06:30
07:00
07:30
08:00
08:30
09:00
09:30
10:00
10:30
11:00
11:30
12:00
12:30
13:00
13:30
14:00
14:30
15:00
15:30
16:00
16:30
17:00
17:30
18:00
18:30
19:00
19:30
20:00
20:30
21:00
21:30
22:00
22:30
23:00
23:30