Tight junctions prevent the diffusion of: 

a. Macromolecules

b. Small water-soluble molecules

c. Ions 

d. Membrane proteins 

e. Glycolipids

Choose the correct set of combinations

TLS Online TPP Program

#Question id: 19278

#Unit 9. Diversity of Life Forms

which of these statements is true of the pine life cycle? 

TLS Online TPP Program

#Question id: 5675

#Unit 5. Developmental Biology

Following are the statements related to mammalian chaemotaxis:

A. During chaemotaxis, the oocyte and its accompanying cumulus cells secrete molecules that attract only uncapacitated sperm toward the egg during the last stages of sperm migration.

B. These chaemotactic compound are hormone progesterone, which is made by the cumulus cells.

C. Progesterone has been shown to bind to a receptor that activates Ca2+ channels in the cell membrane of the sperm tail, leading to sperm hyperactivity and provides directional cue.

D. Cumulus cells also secrete a substance, CRISP1, that attracts sperm and hyperactivates them through CatSper channels similar as in sea urchins.

Which of  the following statement is incorrect?

TLS Online TPP Program

#Question id: 4419

#Unit 3. Fundamental Processes

RNA Pol V is known with

TLS Online TPP Program

#Question id: 28891

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a constitutively active protein kinase of β-catenin pathway?

a) GSK 3β

b) Notum 

c) CKI

d) Jun-N-terminal kinase (JNK)

TLS Online TPP Program

#Question id: 7583

#General Aptitude

A boy travelled from the home to the college at the rate of 25 kmph and walked back at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, Find the distance of the college from the home