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TLS Online TPP Program

#Question id: 2210

Which of these is a general feature of the lipid bilayer in all biological membranes?

#Unit 2. Cellular Organization

  1. Individual lipid molecules are free to diffuse laterally in the surface of the bilayer.

  2. Individual lipid molecules in one face (monolayer) of the bilayer readily diffuse (flip-flop) to the other monolayer.

  3. Polar, but uncharged, compounds readily diffuse across the bilayer.

  4. The bilayer is stabilized by covalent bonds between neighboring phospholipid molecules.

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TLS Online TPP Program

#Question id: 11220

#Unit 7. System Physiology – Animal

The botulinum toxin, which causes botulism, reduces the synaptic release of ________.
TLS Online TPP Program

#Question id: 12813

#General Aptitude

A took 15 sec. to cross a rectangular field diagonally walking at the rate of 52 m/min. and B took the same time to cross the same field along its sides walking at the rate of 68 m/min. The area of the field is :
TLS Online TPP Program

#Question id: 1403

#Unit 4. Cell Communication and Cell Signaling

Tumor-suppressor genes encode proteins with which of the following functions?

a. growth-promoting               b. growth-arresting                  c. pro-apoptotic

d. anti-apoptotic                      e. DNA repair
TLS Online TPP Program

#Question id: 21263

#Unit 12. Applied Biology

which one of the following is the first edible transgenic variety to reach market?
TLS Online TPP Program

#Question id: 521

#Unit 1. Molecules and their Interaction Relevant to Biology

The conversion of pyruvate to ethanol also causes the ________.