Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 3787
TLS Online TPP Program

#Question id: 4000

Which statement is false about the utilization of lactose as a carbon source by E. coli?

#Unit 3. Fundamental Processes

  1. In the presence of both glucose and lactose, the enzymes necessary for lactose catabolism are produced only in limited amounts.

  2. Lactose is the inducer for the enzymes responsible for its own catabolism.

  3. In the absence of lactose, the repressor binds to a single site upstream of the lac genes.

  4. The catabolic enzymes are encoded in a three-gene operon controlled by a single promoter.

More Questions
TLS Online TPP Program

#Question id: 10337

#Unit 6. System Physiology – Plant

In biological nitrogen fixation, the process of nitrification by organism respective bacteria A--which convert the ammonia to nitrite and B--- further converted into nitrate in the soil by their respective A and B bacteria known as;
TLS Online TPP Program

#Question id: 33272

#Unit 2. Cellular Organization

The association of Cdt1 with a protein at active replication forks stimulates Cdt1 ubiquitylation & degradation called:
TLS Online TPP Program

#Question id: 11364

#Unit 9. Diversity of Life Forms

Which of the following is a structure that permits conjugation to occur?
TLS Online TPP Program

#Question id: 12819

#General Aptitude

The length and breadth of a rectangle are increased by 20% and 25% respectively. The increase in the area of the resulting rectangle will be :
TLS Online TPP Program

#Question id: 23663

#Unit 13. Methods in Biology

What is the frequency of occurrence of a desired clone from a YAC library of genomic DNA if the insert size is 400 kbp and the genome contains 2 × 106 kbp?