Practice Questions

TLS Online TPP Program

#Question id: 565

A transition-state analog:

#Unit 1. Molecules and their Interaction Relevant to Biology

is less stable when binding to an enzyme than the normal substrate.
resembles the active site of general acid-base enzymes.
resembles the transition-state structure of the normal enzyme-substrate complex.
stabilizes the transition state for the normal enzyme-substrate complex.

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TLS Online TPP Program

#Question id: 22952

#Unit 5. Developmental Biology

Many of the genes that determine floral organ identity are MADS box genes, Except

TLS Online TPP Program

#Question id: 22953

#Unit 5. Developmental Biology

The MADS box gene form tetramers that bind to

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.