Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 4128
TLS Online TPP Program

#Question id: 4341

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?

#Unit 3. Fundamental Processes

  1. The three genes of the lac operon will be expressed normally.

  2. RNA polymerase will no longer transcribe permease.

  3. The operon will still transcribe the lacZ and lacY genes, but the mRNA will not be translated.

  4. Beta galactosidase will not be produced.

More Questions
TLS Online TPP Program

#Question id: 27938

#Unit 9. Diversity of Life Forms

Those species which look alike or morphologically similar but cannot breed with each other, such type species is called______
TLS Online TPP Program

#Question id: 27939

#Unit 9. Diversity of Life Forms

Which of the following phenomenon is not applicable for biological species concept?
a.Allopatric population
b.Sexually reproducing species
c. Hybrid species
d. Fossils
TLS Online TPP Program

#Question id: 27940

#Unit 9. Diversity of Life Forms

Sibling species are those species which is___
TLS Online TPP Program

#Question id: 27941

#Unit 1. Molecules and their Interaction Relevant to Biology

Some of the following statement are made regarding the Enzymes of glycolysis along with their Coenzyme (s) or Cofactor (s) and Inhibitor (s)

a. Phosphoglucoisomerase having Mg2+ as Cofactor and can be inhibited by 2-deoxyglucose 6-phosphate
b. Aldolase having Zn2+ as Cofactor, can be inhibited by Chelating agents
c. Enolase having Mg, Mn22+ Cd2 as Cofactor, can be inhibited by Fluoride + phosphate
d. Phosphofructokinase having NAD as Coenzyme can be inhibited by Iodoacetate
Which of the following is correct
TLS Online TPP Program

#Question id: 27942

#Unit 1. Molecules and their Interaction Relevant to Biology

Glycolytic enzymes along with them their class is mentioned  
(1) Phosphoglucoisomerase, Phosphotriose isomerase, Phosphoglycerate mutase belongs to Isomerases 
(2) Hexokinase, Phosphofructokinase, Phosphoglycerate kinase, Pyruvate kinase belongs to Transferases 
(3) Aldolase, Enolase belongs to Lysases 
(4) Glyceraldehyde 3-phosphate dehydrogenase belongs to Oxidoreductases

Which of the following is correct
TLS Online TPP Program

#Question id: 27943

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following reaction is catalyzes by enolase during Glycolysis