TLS Online TPP Program

#Question id: 12339


If a species is a keystone predator, then its removal from a community should

#Unit 10. Ecological Principles
  1. Decrease population size of the predator's preferred prey
  2. Decrease species diversity in the prey community
  3. Decrease productivity of the predator's preferred prey
  4. Increase species diversity in the prey community
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TLS Online TPP Program

#Question id: 12062

#Unit 7. System Physiology – Animal

Mass movements are often stimulated after a meal by distention of the stomach (gastrocolic reflex) and distention of the duodenum (duodenocolic reflex). Mass movements often lead to which of the following?

TLS Online TPP Program

#Question id: 891

#Unit 1. Molecules and their Interaction Relevant to Biology

The folding pathways of some proteins require two enzymes that catalyze isomerization reactions such as,

a) Peptide prolyl isomerase (PPI)  catalyzes the elimination of folding intermediates with inappropriate disulfide cross-links

b) Protein disulfide isomerase (PDI) enzyme that catalyzes the interchange, or shuffling, of disulfide bonds until the bonds of the native conformation are formed

c) Peptide prolyl cis-trans isomerase (PPI) catalyzes the interconversion of the cis and trans isomers of Proline residue peptide bonds

d) Peptide prolyl isomerase (PPI) can be a fast step in the folding of proteins that contain some Pro peptide bonds in the cis conformation

Which of the following combinations is correct about protein folding pathways?

TLS Online TPP Program

#Question id: 2988

#Unit 2. Cellular Organization

Use the figure to answer the question below. 

If the cell whose nuclear material is shown in the figure continues toward completion of mitosis, which of the following events would occur next?

TLS Online TPP Program

#Question id: 11851

#General Aptitude

The greatest number of four digits which is divisible by 15, 25, 40 and 75 is :

TLS Online TPP Program

#Question id: 2964

#Unit 2. Cellular Organization

Starting with a fertilized egg (zygote), a series of six cell divisions would produce an early embryo with how many cells?