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TLS Online TPP Program

#Question id: 111

Sterols are steroids which have

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. a hydroxyl group at position C-17.

  2. a hydroxyl group at position C-3.

  3. hydroxyl groups at both position C-3 and C-17.

  4. 5 fused rings instead of 4 fused rings.

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TLS Online TPP Program

#Question id: 1290

#Unit 4. Cell Communication and Cell Signaling

Hydroxyproline is important in the formation of staple collagen polymers within cells. The formation of hydroxyproline requires:
TLS Online TPP Program

#Question id: 6958

#Unit 5. Developmental Biology

Vg-1 and wnt are used in both frogs and chicks to establish a body axis, although in chicks this is the antero-posterior axis instead of the dorso-ventral axis. What is the region of the chick embryo that is thus analogous to the Nieuwkoop center?
TLS Online TPP Program

#Question id: 31181

#Unit 4. Cell Communication and Cell Signaling

The principal signaling receptor for Wnt proteins is Frizzled (Fz), which contains: 
TLS Online TPP Program

#Question id: 15732

#Unit 12. Applied Biology

In the phases of callus growth which phase shows cells expansion increase.
TLS Online TPP Program

#Question id: 8950

#Unit 9. Diversity of Life Forms

You have before you a living organism, which you examine carefully. Which of the following should convince you that the organism is acoelomate?