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TLS Online TPP Program

#Question id: 5131

Differentiated cells express the genes and proteins characteristic of their final identity in the adult, and that identity can be altered only under special circumstances. How does the concept of differentiation, as described here, differ from the concept of determination?

#Unit 5. Developmental Biology

  1. Determined cells have begun to differentiate, but are not fully differentiated.

  2. Determined cells are embryonic cells that will give rise to all the cell types of the adult organism, but have not yet begun to express the genes and proteins characteristic of their final fates.

  3. Determined cells will continue to follow their fate if grafted into a different place in a host embryo, even though they do not yet express the genes and proteins characteristic of their final fate.

  4. Determined cells are embryonic cells that will form certain cell types and structures if development is allowed to proceed normally, but will alter their development in response to their location if transplanted to a different place in a host embryo.

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TLS Online TPP Program

#Question id: 3792

#Unit 3. Fundamental Processes

Strain introduced by unwinding DNA at the replication forks is relieved by
TLS Online TPP Program

#Question id: 1566

#Unit 4. Cell Communication and Cell Signaling

Histamines trigger dilation of nearby blood vessels, and increase in their permeability. Which of the signs of inflammation are therefore associated with histamine release?
TLS Online TPP Program

#Question id: 10578

#Unit 10. Ecological Principles

The population of annual breeder growing at a rate of 10% per year. Initial population size is 1200. After 3 years population size would be
TLS Online TPP Program

#Question id: 27972

#Unit 1. Molecules and their Interaction Relevant to Biology

This is the order of electron transfer in complex-I NADH - FMN - Fe-S – Q to Prevent electron transfer from Fe-S center to ubiquinone 

a. Myxothiazol

b. Rotenone

c. Amytal

d. Piericidin A

Which of the following can be used
TLS Online TPP Program

#Question id: 10413

#Unit 1. Molecules and their Interaction Relevant to Biology

Following are certain statements are related to the effect of red and far-red light;
a) under a dense canopy much of the red light is absorbed by plant pigments, resulting in transmittance of mostly far-red light
b) Pr (red) has highest photon flux at 680 nm while Pfr (far-red) has highest photon flux at 730nm
c) Pfr far-red light–absorbing form, which is considered to be the physiologically active form of phytochrome
d) R:FR ratio is strongly affected by the presence of a canopy because chlorophyll absorbs far-red but not red light
Which one of the combinations of above statements is incorrect?