Practice Questions

TLS Online TPP Program

#Question id: 16960

antigenic determinant is defined as a region of an antigen that makes contact with the antigen-combining region on an antibody. Which statement is true for allotypic determinants?

#Unit 4. Cell Communication and Cell Signaling

Antigenic determinants that are allele specific—small differences in the constant region of light and heavy chains that vary among individuals.
Antigenic determinants characteristic of a particular antigen combining site. Each antibody will have its own characteristic idiotypic determinants made up of residues from the heavy and light chains that contribute to the antigen-binding regions.
Antigenic determinants specific to each heavy chain class
Papain-generated fragment of antibodies consisting of the paired CH2CH3 (and, for IgM and IgE, CH4) domains

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TLS Online TPP Program

#Question id: 29062

#Unit 10. Ecological Principles

Ecological envelope is termed as____

TLS Online TPP Program

#Question id: 29063

#Unit 10. Ecological Principles

Which of the following statement correct define the Proportional similarity values ?

a) less than 0.70 have been taken to indicate competitive exclusion

b) greater than 0.70 indicate possible coexistence

c) less than 0.70 have been taken to indicate possible coexistence

d) greater than 0.70 indicate competitive exclusion

TLS Online TPP Program

#Question id: 29064

#Unit 10. Ecological Principles

Regarding the geographic range of a species, which of the following statements is true?

TLS Online TPP Program

#Question id: 29065

#Unit 10. Ecological Principles

Ecological and crude density of fish prey in related with predator. Water level is drop during the dry season and further increases in a rainy season. Following some observation effect are present on their density

A) Ecological density is not change with respect to water level

B) Ecological density is gradually decrease with low water level

C) Crude density increases over ecological density during low water level

D) Ecological density increases while crude density decreases during low water level

E) There is no effect on crude density with seasonal water level

Which of the following above observation is correct?

TLS Online TPP Program

#Question id: 29066

#Unit 10. Ecological Principles

What will have not the drawbacks of Mark-recapture technique ?

TLS Online TPP Program

#Question id: 29067

#Unit 10. Ecological Principles

Which of the following statements about the birth rates (b1, b2) and death rates (d1, d2) of species 1 and 2 indicated in the figure is true?