TLS Online TPP Program

#Question id: 33390


why Gly is most conserved in type II B turns, its due to

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Small size
  2. Unique allowed region suitable for B turns
  3. Hydrogen bonding
  4. No side chain
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TLS Online TPP Program

#Question id: 12083

#Unit 10. Ecological Principles

In bottom sediments of lakes and streams, organic matter is broken down by heterotrophic microorganisms and ammonia is released. Under aerobic conditions, specialized bacteria convert ammonia to nitrate (nitrification). This nitrate, together with nitrate from other sources, diffuses into the deeper sediments, where it may undergo anaerobic conversion to nitrogen gas (denitrification). These sediments typically contain oligochaete worms that live with their heads buried and their tails waving back and forth in the overlying water. Plastic columns were packed with freshly collected stream sediments and then  covered  with  layers  of  nitrate enriched  water.  A similar  set  of  columns  was packed with sediment that had been sterilized and then covered with either nitrate-enriched water or distilled water. Oligochaete  worms  were  collected  and  acclimated  to  20°(C)Following  acclimation,  worms  were  rinsed  in  distilled water and then added to three sediment columns. The columns were incubated in the dark at 20°C and monitored every three days for changes in the concentration of nitrate in the overlying water. Nitrate concentrations in each of the experimental treatments were plotted against time, as shown in the graph below

It can be concluded from the figure that

TLS Online TPP Program

#Question id: 14494

#Unit 13. Methods in Biology

A card is drawn from a pack of 52 cards and then a second is drawn. Probability that both the cards drawn are queen is

TLS Online TPP Program

#Question id: 2878

#Unit 2. Cellular Organization

Match the following types of Transposable elements with their respective types and examples found in various organisms.

Transposon

Type

Example

1. F and G element

a. DNA-mediated

 i. Drosophila

2. Ty elements

b. RNA-mediated

 ii. Humans

3. Alu sequences

c. Poly-A retrotransposons

 iii. Yeast

4. P-elements

d. Virus-like retrotransposons

 iv. Mammals

TLS Online TPP Program

#Question id: 3360

#Unit 11. Evolution and Behavior

Which of the following does not alter hardy Weinberg equability?

TLS Online TPP Program

#Question id: 2404

#Unit 2. Cellular Organization

In the cells of some organisms, mitosis occurs without cytokinesis. This will result in