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TLS Online TPP Program

#Question id: 2659

The correct option regarding the lac operon in E.coli from the following is

#XL - T Zoology

  1. Lac operon is switched on in the absence of lactose

  2. Lac repressor binds to the lac promoter

  3. β-galactosidase is the only enzyme produced in large quantities when lac operon is turned on

  4. lac operon messenger RNA is a polycistronic mRNA

More Questions
TLS Online TPP Program

#Question id: 1679

#XL - Q Biochemistry

What is the molecular weight of MHC class II β chain?
TLS Online TPP Program

#Question id: 1680

#XL - Q Biochemistry

Where are the MHC class II region genes in the mouse located?
TLS Online TPP Program

#Question id: 1681

#XL - Q Biochemistry

What do MHC class III genes encode?
TLS Online TPP Program

#Question id: 1682

#XL - Q Biochemistry

Extensive allelic polymorphism is found in MHC:
TLS Online TPP Program

#Question id: 1683

#XL - Q Biochemistry

Expression of MHC genes is:
TLS Online TPP Program

#Question id: 1684

#XL - Q Biochemistry

What are the molecules mediating signal transduction following antigen binding to cell surface immunoglobulin on a B-cell called?