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TLS Online TPP Program

#Question id: 7112

Although the vertebrate body plan outwardly displays a mirror-image symmetry with regard to left and right, the internal organs are not symmetrical. How does this left-right asymmetry develop?

#Unit 5. Developmental Biology
  1. The two cells of the Nieuwkoop center (at the 32-cell stage) signal each other and become either left or right.
  2. Maternal factors that determine left and right are packaged into the egg, just as dorsalizing factors are.
  3. Differential release of Ca2+ ions on the left side leads to expression of Nodal and Pitx2 on the left.
  4. Gravity determines the left-right axis: that side which is down becomes right and that side which is up becomes left.
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TLS Online TPP Program

#Question id: 7582

#General Aptitude

While covering a distance of 24 km, a man noticed that after walking for 1 hour and 40 minutes, the distance covered by him was 5/7 of the remaining distance. What was his speed in meters per second?
TLS Online TPP Program

#Question id: 14957

#Unit 6. System Physiology – Plant

the xylan backbone may be synthesized by a distinctly different group of synthases, including synthases named;
TLS Online TPP Program

#Question id: 28943

#Unit 7. System Physiology – Animal

Hypothalamus secreting Corticotropin-releasing hormone (CRH) stimulates the secretion of____
TLS Online TPP Program

#Question id: 11622

#Unit 8. Inheritance Biology

If a cross is made between two parental homozygous allele female Red phenotype  (RR) cross with male white phenotype (rr)  resulting F1 progeny  is all red phenotype (Rr), if reciprocate this cross the resulting progeny will be change.

a) Gene expression will be the parental origin dependent

b) uniparental gene contribution and also the expression of the gene is uniparental

c) Gene expression independent over parental origin

d) Gene contribution is biparental but the expression of the gene is uniparental

This prediction concludes that,
TLS Online TPP Program

#Question id: 10364

#Unit 6. System Physiology – Plant

Which of the following is the most common type of symbiosis occurs between members of the plant family and soil bacteria?