Sign In
Ask Question
Melissa Chen
Biology
31 January, 14:22
What is the difference between lacI and lacZ?
+4
Answers (
1
)
Giancarlo Lam
31 January, 14:37
0
An operon is a unit of transcription regulated in bacteria. It is structurally a part of the bacterial chromosome formed by a regulatory gene, an operator, a promoter and structural genes.
The lac operon is the regulatory unit that contains the genes involved for lactose metabolism. It is expressed only in the presence of lactose and adsence of glucose. Genes encode proteins that allow bacteria to use lactose as the main source of energy. Two regulatory proteins are involved in the lac operon:
- lac receptor: acts as a lactose sensor.
- catabolite activating protein (actives and stimulates the transcription of the lactose operon genes)
The lac operon cointains 3 genes: lacZ, lacl, lacA. The difference between lacZ and lacl is that lacZ encodes an enzyme that breaks lactose into monosaccharides (they constitute the simplest form, they cannot be hydrolyzed to a simple one. For example glucose, fructose and galactose) and lacl is a transporter that carries lactose inside the cell.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“What is the difference between lacI and lacZ? ...”
in 📗 Biology if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What dinosaur is found on almost every continent?
Answers (2)
What were the only animals that the people of the americas partially domesticated?
Answers (1)
Quincy has a dull, throbbing headache. His pain signals are carried by:
Answers (1)
Which statement best describes the events of September 11th? The attacks were unexpected by the American public. The attacks destroyed several government buildings. The attacks happened in spite of strong airline security.
Answers (1)
In what form is LPG stored in in cylinders?
Answers (1)
New Questions in Biology
Which has a more long term consistency? (Climate or Weather)
Answers (2)
Bees and butterflies are dependent on flowers for their food. However, the more successful of the two will get the nectar. Which kind of animal interaction does this demonstrate?
Answers (1)
Why do all macromolecules have in common with eachother they all act as catalyst
Answers (1)
Where do primary consumers get their carbon from
Answers (1)
How is fermentation involved in the production of atp?
Answers (1)
Home
»
Biology
» What is the difference between lacI and lacZ?
Sign In
Sign Up
Forgot Password?