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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: 31367

#Unit 4. Cell Communication and Cell Signaling

Which one of the following proteins is NOT related to extracellular matrix proteins?
TLS Online TPP Program

#Question id: 1003

#Unit 1. Molecules and their Interaction Relevant to Biology

The glucose-alanine cycle provides ________.
TLS Online TPP Program

#Question id: 12011

#Unit 10. Ecological Principles

The supercontinent that began to break up during  the Triassic
TLS Online TPP Program

#Question id: 3683

#Unit 3. Fundamental Processes

In some viruses, RNA serves as the storage of genetic materials and DNA is synthesized from RNA by the enzyme known as: