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TLS Online TPP Program

#Question id: 13162

In the amoeba Dictyostelium discoideum, cAMP acts as an extracellular signalling molecule and binds to and signals via a G protein–coupled receptor; it is not a second messenger. Amoeba cells were transfected with genes encoding two fusion proteins: a Gα fused to cyan fluorescent protein (CFP), and a Gβ fused to yellow fluorescent protein (YFP). CFP normally fluoresces 490-nm light; YFP, 527-nm light. In which conditions fluorescence
energy transfer occur from CFP to YFP?

#Unit 4. Cell Communication and Cell Signaling
  1. If ligand binding occur it leads to association of the Gα and Gβγ subunits, then fluorescence energy transfer can occur.
  2. If ligand binding occur it leads to dissociation of the Gα and Gβγ subunits, then fluorescence energy transfer can occur.
  3. If ligand binding doesn’t occur (In resting state) it leads to dissociation of the Gα and Gβγ subunits, then fluorescence energy transfer can occur.
  4. If ligand binding doesn’t occur (In resting state) it leads to association of the Gα and Gβγ subunits, then fluorescence energy transfer can occur.
     
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TLS Online TPP Program

#Question id: 23809

#General Aptitude

Use of an ordinary telephone as an Internet appliance is called:
TLS Online TPP Program

#Question id: 10767

#Unit 8. Inheritance Biology

Chi square test is used to verify
TLS Online TPP Program

#Question id: 15190

#Unit 8. Inheritance Biology

The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?
TLS Online TPP Program

#Question id: 802

#Unit 1. Molecules and their Interaction Relevant to Biology

A single-stranded DNA molecule contains 40 nucleotides with equal amounts of A, C, G, and T. This DNA strand can combine with a complementary DNA strand to form a double-stranded DNA molecule. Which is a possible sequence and structure for this DNA molecule?
TLS Online TPP Program

#Question id: 10339

#Unit 6. System Physiology – Plant

Nitrate assimilates into the root where the conversion of nitrate to nitrite in the cytosol, a reduction reaction that involves the transfer of two electrons catalyzes by an enzyme that is NAD(P)H dependent is known as