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TLS Online TPP Program

#Question id: 7148

What is the relationship between dorso-ventral patterning of the neural tube and patterning of the somites

#Unit 5. Developmental Biology
  1. The somites pattern the neural tube after they form.
  2. The neural tube plays the role of organizer in being the sole influence on patterning in the somites
  3. Sonic hedgehog from the notochord and floorplate of the neural tube confers ventral fates on both the neural tube and the somite, while BMPs confer more dorsal fates.
  4. Both the neural tube and the somites acquire their dorso-ventral patterning during gastrulation
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TLS Online TPP Program

#Question id: 1764

#Unit 4. Cell Communication and Cell Signaling

Which of the following is NOT a feature of germinal center B-cells?
TLS Online TPP Program

#Question id: 15729

#Unit 12. Applied Biology

The Somatic Embryos regenerating from an explants or a callus are termed as
TLS Online TPP Program

#Question id: 6540

#General Aptitude

Every month, the price of a particular commodity falls in this order: 1024,640,400,250,...... What is the next value?
TLS Online TPP Program

#Question id: 7154

#Unit 5. Developmental Biology

Cancer is believed to often arise from stem cells, rather than fully differentiated cells. Which of the following are consistent with this view?
TLS Online TPP Program

#Question id: 12078

#Unit 7. System Physiology – Animal

Following ejaculation, arterial blood flow into the corpora cavernosa decreases back to the normal resting level resulting in the flaccid state. What is the best explanation for this decrease in blood flow?