« previous next »

Author Question: The tryptophan operon is a repressible operon that is A) permanently turned on. (Read 1026 times)

aero

  • Hero Member
  • *****
  • Posts: 512
on: Jun 29, 2013
The tryptophan operon is a repressible operon that is
A) permanently turned on.
B) turned on only when tryptophan is present in the growth medium.
C) turned off only when glucose is present in the growth medium.
D) turned on only when glucose is present in the growth medium.
E) turned off whenever tryptophan is added to the growth medium.


Hawke

  • Hero Member
  • *****
  • Posts: 679
Reply #1 on: Jul 1, 2013
I'd go with E. It makes sense.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

aero

  • Hero Member
  • *****
  • Posts: 512
Reply #2 on: Jul 23, 2013
Perfect!! It was right lol


« previous next »
 

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Effects of lactose and glucose on the expression of the lac operon Effects of lactose and glucose on the expression of the lac operon
Lac Operon cAMP present Lac Operon cAMP present
Lactose Operon Lactose Operon
The attenuation model regulating the tryptophan operon The attenuation model regulating the tryptophan operon
]Genetic regulation of the ara operon\\\\ ]Genetic regulation of the ara operon\\\\
Regulatory Proteins Binding to lac Operon Regulatory Sequences Regulatory Proteins Binding to lac Operon Regulatory Sequences
Video: Primary and secondary response to infection

For a complete list of videos, visit our video library