TLS Online TPP Program

#Question id: 7113


In flies, frogs, and chicks, gradients of morphogens determine the future antero-posterior and dorso-ventral axes of the developing embryo. How is the antero-posterior axis determined in C. elegans?

#Unit 5. Developmental Biology
  1. bicoid protein is translated in the anterior of the fertilized egg, leading to a gradient that determines the antero-posterior axis
  2. nodal triggers formation of an organizer that will determine the dorsal, and hence the anterior, side of the embryo
  3. beta-catenin becomes localized to the nucleus in the future anterior cells after fertilization
  4. sperm entry leads to a reorganization of the cytoskeleton and redistribution of maternally packaged PAR proteins, which in turn determine the antero-posterior axis
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TLS Online TPP Program

#Question id: 715

#Unit 1. Molecules and their Interaction Relevant to Biology

A protein is made up of 200 amino acids with alpha helix region containing 100 amino acid residues and 80 amino acids making antiparallel beta sheet and rest 20 amino acids in extended form. What will be the total length of this protein?

TLS Online TPP Program

#Question id: 2311

#Unit 2. Cellular Organization

The structure in which proteins and RNA are made into ribosomes is called the

TLS Online TPP Program

#Question id: 2381

#Unit 2. Cellular Organization

During which phase of mitosis do the chromosomes arrange themselves across the center of the cell?

TLS Online TPP Program

#Question id: 10348

#Unit 6. System Physiology – Plant

During ammonium assimilation, requires two enzymes converting ammonium to amino acids. Each of which is Glutamine synthetase (GS), given below some statements about GS ;

a) GS transfers the amide group of glutamine to 2-oxoglutarate, yielding two molecules of glutamate

b) it requires a divalent cation such as Mg2+, Mn2+, or Co2+ as a cofactor

c) Plants contain two classes of GS, one in the cytosol and the other in root plastids or shoot chloroplasts

d) The cytosolic forms are expressed in germinating seeds or in the vascular bundles of roots and shoots and produce glutamate for intercellular nitrogen transport

e) The GS in root plastids generates amide nitrogen for local consumption; the GS in shoot chloroplasts reassimilates photorespiratory NH4+

f) Light and carbohydrate levels alter the expression of the cytosolic forms of the enzyme, but they have little effect on the plastid forms.

Which of the following statements is correct?

TLS Online TPP Program

#Question id: 3589

#Unit 8. Inheritance Biology

Monohybrid Plant having genotype Tt were allowed to test cross , what is probability of random three plant selected that is

A- two tall, one dwarf      B- one tall, two dwarf       C- all tall