Practice Questions

TLS Online TPP Program

#Question id: 2110

According to the fluid mosaic model of cell membranes, phospholipids:

#XL - T Zoology

can move laterally along the plane of the membrane
frequently flip-flop from one side of the membrane to the other
occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane
have hydrophilic tails in the interior of the membrane

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TLS Online TPP Program

#Question id: 1122

#XL - Q Biochemistry

In endocrine signaling, the signaling molecule.

TLS Online TPP Program

#Question id: 4628

#XL - T Zoology

Which group is composed entirely of individuals who maintained that species are fixed (i.e., unchanging)?

A) Linnaeus

B) Lyell

C) Darwin

D) Aristotle

E) Cuvier

TLS Online TPP Program

#Question id: 2141

#XL - S Microbiology

Facilitated diffusion through a biological membrane is:

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#Question id: 47

#XL - Q Biochemistry

If 30 J of energy is added to water in the form of heat at 27°C, what is the change in entropy of water?

TLS Online TPP Program

#Question id: 19676

#XL - P Chemistry

When acetamide is converted to methylamine, what is the name of the reaction?