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#Question id: 4323


Muscle cells differ from nerve cells mainly because they

#Unit 3. Fundamental Processes
  1. express different genes.

  2. contain different genes.

  3. use different genetic codes.

  4. have unique ribosomes.

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TLS Online TPP Program

#Question id: 10232

#Unit 10. Ecological Principles

Which of the following is incorrect statement?

TLS Online TPP Program

#Question id: 1369

#Unit 4. Cell Communication and Cell Signaling

The following statements are made with reference to characteristics of glycosaminoglycans and proteoglycans, which are major constituents of extracellular matrix. Which one of them is incorrect?

TLS Online TPP Program

#Question id: 4558

#Unit 3. Fundamental Processes

Classes of RNA transcribed by the three eukaryotic nuclear RNA Polymerase;

                    Polymerase

             RNA Transcribed     

A. RNA polymerase I                   

i) tRNAs, 5S rRNA, snRNA, U6, 7S RNA

B. RNA polymerase II

ii) Pre-rRNA 28S, 18SrRNA,  5.8SrRNAs

C. RNA polymerase III

iii) mRNA, snRNAs, siRNAs, miRNAs

 Match the following correct combination given above combinations;

TLS Online TPP Program

#Question id: 15654

#Unit 13. Methods in Biology

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. Next you isolate a mutation, designated MelB–, which gives uninducible melibiase activity. Mapping experiments show that MelB– is linked to Mel1. Using an F' factor that carries the chromosomal region surrounding Mel1, you perform the following genetic tests:

                      
Describe the basic genetic properties of the MelB– mutation?

TLS Online TPP Program

#Question id: 11610

#Unit 6. System Physiology – Plant

Environmental factors such as photoperiod and temperature can alter the levels of active gibberellins by affecting gene transcription for specific steps in the biosynthetic pathway such as;

a) Promotion of germination by light has been shown to be due to increases in GA1 levels resulting from a light-induced increase in the transcription of the gene for GA3ox, which converts GA20 to GA1

b) level of GA20-oxidase occurs in the highest amount in shoot tips and elongating stems, is increased under long-day conditions.  The fact that GA 20-oxidase is the enzyme that converts GA53 to GA20

c) Giving cold treatment  of Thlaspiarvense and a return to high temperatures, the ent-kaurenoic acid is converted to GA9, the most active gibberellin for stimulating the flowering response

d) Potato plants overexpressing the GA20ox gene showed tuberization, whereas transformation with the antisense gene for GA20ox inhibited tuberization

Which of the following from the given above statements is correct?