TLS Online TPP Program

#Question id: 31369


Myocardial fibers are separated by membranes, but depolarization spreads radially because of the presence of: 

#Unit 4. Cell Communication and Cell Signaling
  1. Voltage sensitive Ca+  channels
  2. Gap junctions
  3. Voltage sensitive Na+  channels
  4. Funny channels
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TLS Online TPP Program

#Question id: 910

#Unit 1. Molecules and their Interaction Relevant to Biology

Experiments on denaturation and renaturation after the reduction and reoxidation of the —S—S— bonds in the enzyme ribonuclease (RNase) have shown that:

TLS Online TPP Program

#Question id: 911

#Unit 1. Molecules and their Interaction Relevant to Biology

The correct order for molecular chaperone–mediated protein folding is:

I – exchange of ATP for ADP on chaperone

II – chaperone undergoes conformational change, which affects protein folding

III – chaperone binds to exposed hydrophobic residues on unfolded protein

IV – folded protein is released

TLS Online TPP Program

#Question id: 912

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct about the native state of a protein

a. is unaffected by changes in temperature and pH.

b. corresponds to the highest Gibbs free energy state.

c. is determined by its primary amino acid sequence.

d. corresponds to the lowest entropic state.

TLS Online TPP Program

#Question id: 913

#Unit 1. Molecules and their Interaction Relevant to Biology

The appropriate folding of a newly translated product is essential, and continual misfolding often leads to disease, especially in vertebrates. This misfolding, particularly in the situation of prion diseases, may be due to

TLS Online TPP Program

#Question id: 914

#Unit 1. Molecules and their Interaction Relevant to Biology

Lipoprotein lipase acts in:

TLS Online TPP Program

#Question id: 915

#Unit 1. Molecules and their Interaction Relevant to Biology

Free fatty acids in the bloodstream are: