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TLS Online TPP Program

#Question id: 1059

A limiting factor for viral infection is

#Unit 4. Cell Communication and Cell Signaling

  1. internal metabolic temperature of the host cell.

  2. nutrition of the host cell.

  3. stage of cell cycle of the host cell.

  4. presence of specific receptor molecules on the host cell.

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TLS Online TPP Program

#Question id: 12728

#Unit 13. Methods in Biology

Name the type of RNA which folds up to give a cloverleaf secondary structure.
TLS Online TPP Program

#Question id: 1523

#Unit 4. Cell Communication and Cell Signaling

Following statements are regarding to the apoptosis which is induced by trophic factors.

A. The presence of specific trophic factors (e.g., NGF) leads to activation of their cognate receptor tyrosine kinases (e.g., TrkA) and activation of the PKB pathway.

B. DNA damage or ultraviolet irradiation leads to induction of synthesis of the BH3-only Puma protein. Puma binds to Bak and Bax as well as to Bcl-2, allowing Bak and Bax to form oligomeric pores.

C. Removal of a cell from its substratum disrupts integrin signaling, leading to release of the BH3-only Bim protein from the cytoskeleton.

D. Binding of extracellular death signals, such as tumor necrosis factor and Fas ligand, to their receptors oligomerizes an associated protein (FADD), which in turn triggers the caspase cascade, leading to cell murder by apoptosis.

Which of the following pathway does not belong to the trophic factor inducing apoptotic pathway?
TLS Online TPP Program

#Question id: 3402

#Unit 11. Evolution and Behavior

Which of the following population their genotype frequency is governed by allele frequency as per Hardy Weinberg genetic equilibrium?

Population

Genotype Frequency

I

AA= .16

Aa=.35

aa=.49

II

AA=.01

Aa=.18

aa=.81

III

AA=.25

Aa=.25

aa=.50

IV

AA=.36

Aa=.48

aa=.16

TLS Online TPP Program

#Question id: 33507

#Unit 2. Cellular Organization

A. Non-Mendelian inheritance is defined by the failure of the offspring of a mating to display Mendelian segregation for parental characters. 
B. For Non-Mendelian inheritance, presence of genes that are outside the nucleus and are not distributed to gametes or to daughter cells by segregation on the meiotic or mitotic spindles.
TLS Online TPP Program

#Question id: 5421

#General Aptitude

A car owner buys petrol at Rs.75, Rs.80 and Rs.85 per litre for three successive years. What is the average cost per litre of petrol if he spends Rs.4000 each year?