Practice Questions

TLS Online TPP Program

#Question id: 14809

Indicate which of the following statements regarding haptens and carriers are true.

#Unit 4. Cell Communication and Cell Signaling

Haptens are large protein molecules such as BSA.
When a hapten-carrier complex containing multiple hapten molecules is injected into an animal, most of the induced antibodies are specific for the hapten.
Carriers are needed only if one wants to elicit a cell-mediated response.
It is necessary to immunize with a hapten-carrier complex in order to obtain antibodies directed against the hapten.

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TLS Online TPP Program

#Question id: 22954

#Unit 5. Developmental Biology

According to the which Model, floral organ identity is regulated by tetrameric complexes of the ABCE proteins

TLS Online TPP Program

#Question id: 22955

#Unit 5. Developmental Biology

Based On ABC model during flower development, loss of class A activity results the formation of only stamen and carpel. Which of the flowering floral organs identity genes controls the class A activity ?

TLS Online TPP Program

#Question id: 22956

#Unit 5. Developmental Biology

Individual and overlapping expression of homeotic genes in adjacent whorl of a flower determine the pattern of floral organ development. In an Arabidopsis mutant, floral organs are distributed as follows

Loss of function mutation in which one of the following genes would have caused the above pattern of floral organs development

TLS Online TPP Program

#Question id: 22957

#Unit 5. Developmental Biology

floral organ development is controlled by overlapping expressions of A class , B class and C class genes in different whorls. In an Arabidopsis mutant, the floral whorls had following pattern:

Sepal àSepal àcarpel àcarpel

Mutation in which one of the following class of gene causes above pattern.

TLS Online TPP Program

#Question id: 22958

#Unit 5. Developmental Biology

Which of the following statement is correct regarding to the flower development in Arabidopsis?

TLS Online TPP Program

#Question id: 28521

#Unit 5. Developmental Biology

Which of the following stage of the diploid life cycle commences with the fusion of the haploid egg and sperm to form the single-celled ?