Which cells in a sponge are primarily responsible for trapping and removing food particles from circulating water?

TLS Online TPP Program

#Question id: 22973

#Unit 7. System Physiology – Animal

Which enzyme converts 25-hydroxycholecalciferol to the active form, 1,25-dihydroxycholecalciferol.

TLS Online TPP Program

#Question id: 28255

#Unit 5. Developmental Biology

Which of the following structure of egg homologous to the acrosomal vesicle of the sperm?

TLS Online TPP Program

#Question id: 1160

#Unit 4. Cell Communication and Cell Signaling

Signal amplification is an important part of GPCR-mediated signaling. Which of the following steps do NOT directly amplify the signal?

TLS Online TPP Program

#Question id: 31050

#Unit 4. Cell Communication and Cell Signaling

In which condition there is little reduction in the total number of surface RTK receptors?

TLS Online TPP Program

#Question id: 16953

#Unit 4. Cell Communication and Cell Signaling

The ability of any stem cell to self-renew and differentiate depends on the structural organization and cellular function of specialized anatomic microenvironments known as stem cell niches. These sequestered regions are typically populated by a supportive network of stromal cells. Stem cell niche stromal cells express soluble and membrane-bound proteins that regulate cell survival, proliferation, differentiation, and trafficking. Which statements is true about HSCs?