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TLS Online TPP Program

#Question id: 4133

Which of the following statements about aminoacyl-tRNA synthetases is false?

#Unit 3. Fundamental Processes

  1. Some of the enzymes have an editing/proofreading capability.

  2. The enzyme attaches an amino acid to the 3' end of a tRNA.

  3. The enzyme splits ATP to AMP + PPi.

  4. The enzyme will use any tRNA species, but is highly specific for a given amino acid.

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TLS Online TPP Program

#Question id: 9208

#Unit 9. Diversity of Life Forms

Which of the following threats to biodiversity is targeted at specific species rather than groups of species?
TLS Online TPP Program

#Question id: 23849

#Unit 2. Cellular Organization

Which pathway regulates the contraction of vertebrate smooth muscle? 
TLS Online TPP Program

#Question id: 4889

#Unit 8. Inheritance Biology

A three point test cross was carried out in Drosophila melanogaster involving three adjacent incomplete link genes A, C and B arranged in the same order. The distance between A to C is 20 map units (mu) and that between B to C is 10 map. If pure line Drosophila AAbbCC crosses with aaBBcc to produce F1 offspring were allowed to cross with aabbcc result in 1000 offspring, which of the following genotype combination with number is correct?

Genotype

Number

I- Aabbcc

a- 90

II- aabbCc

b-40

III- AaBbCc

c-10

TLS Online TPP Program

#Question id: 4892

#Unit 8. Inheritance Biology

The RFLP pattern for this locus, obtained by hybridization using a probe internal sites, from family is shown below: Based on the above profile, what is the nature of the genetic disorder?
TLS Online TPP Program

#Question id: 16088

#Unit 7. System Physiology – Animal

Fever occurs when