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TLS Online TPP Program

#Question id: 10854

Which of the following is an example of a hemiparasite?

#Unit 10. Ecological Principles
  1. Mistletoe
  2. Squawroot
  3. Wheat rust
  4. Plasmodium 
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TLS Online TPP Program

#Question id: 14864

#Unit 6. System Physiology – Plant

Which of the following statements of ATPase is INCORRECT?
TLS Online TPP Program

#Question id: 7511

#General Aptitude

A man can row 19/2 km/h in still water. If in a river which is running at 5/2 km/h, it takes him 1 h 35 min to row to a place and back, how far off is the place?
TLS Online TPP Program

#Question id: 10791

#Unit 6. System Physiology – Plant

Following are certain statements regarding furanocoumarins;

 a) furanocoumarins have an attached furan ring

 b) These compounds are toxic until they are activated by sunlight in the ultraviolet A (UV-A) region (320–400 nm)  

 c) Light activated furanocoumarins can insert themselves into the double helix of DNA and bind to the pyrimidine bases, thus blocking transcription and repair and leading eventually to cell death   

 d) Phototoxic furanocoumarins are especially abundant in members of the Umbelliferae family, including celery, parsnip, and parsley.

 Which of the following combination from the above statements is correct?
TLS Online TPP Program

#Question id: 2561

#Unit 2. Cellular Organization

Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large, complex, undigested lipids. Which cellular organelle is most likely defective in this condition?
TLS Online TPP Program

#Question id: 4448

#Unit 3. Fundamental Processes

Three defined steps in a transcription cycle; choose correct one

1a. Closed complex

In this form, the DNA remains double-stranded, and the enzyme is bound to one face of the helix. I

1b. Open complex

In which the DNA strands separate over a distance of 13 bp around the start site to form the transcription bubble. In the next stage of initiation,

2. Promoter escape

Incorporation of the first 10 or so ribonucleotides is a rather inefficient process, and at that stage, the enzyme often releases short transcripts and then begins synthesis again

3. Initial transcribing complex.

Once an enzyme makes a transcript longer than 10 nucleotides, it is said to have