TLS Online TPP Program

#Question id: 10935


The pH at which imidazole of histidine ring will be protonated………….. and imine group of proline will be deprotonated…………….

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Below pH 6 and above pH 12

  2. above pH 6 and below pH 11

  3. Only below pH 6

  4. Only above pH11
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TLS Online TPP Program

#Question id: 13168

#Unit 10. Ecological Principles

Use the following diagram from the text showing the spread of the cattle egret, Bulbulcus ibis, since its arrival in the New World, to answer the following question.


How would an ecologist likely explain the expansion of the cattle egret?

TLS Online TPP Program

#Question id: 14887

#Unit 4. Cell Communication and Cell Signaling

Secondary lymphoid organ are typically compartmentalized into T-cell areas and B-cell areas, these cells activity are separated  into distinct microenvironments such as
a) T cells are found in the paracortex of the lymph nodes
b) B cells are organized into follicles cells
c) B cells are found in the periarteriolar sheath of the spleen.
d) T cells are found in the periarteriolar sheath of the spleen.
Which of the following is the correct microenvironments of the cells ?

TLS Online TPP Program

#Question id: 13157

#Unit 2. Cellular Organization

Following are the some statement . Choose the correct one?
a. Primary Lysosomes are also called storage granules, protolysosomes or virgin lysosomes. Primary lysosomes are newly formed organelles bounded by a single membrane and typically having a diameter of 100 nm. They contain the degradative enzymes which  participate in digestive process. 
b. Heterophagosomes are also called heterophagic vacuoles, heterolysosomes or phagolysosomes. Heterophagosomes are formed by the fusion of primary lysosomes with cytoplasmic vacuoles containing extracellular substances brought into the cell by any of a variety of endocytic processes.
c. Autophagosomes are able to digest intracellular structures including mitochondria, ribosomes, peroxisomes and glycogen granules. 

TLS Online TPP Program

#Question id: 3887

#Unit 3. Fundamental Processes

Aptamers are

TLS Online TPP Program

#Question id: 3460

#Unit 11. Evolution and Behavior

The many eyes hypothesis suggests prey flock because: