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TLS Online TPP Program

#Question id: 23783

Retinal is parallel to the surface of the membrane and is attached to a

#Unit 7. System Physiology – Animal
  1. Arginine residue at position 295 in the seventh transmembrane domain.
  2. Lysine residue at position 296 in the seventh transmembrane domain.
  3. Cysteine residue at position 297 in the seventh transmembrane domain
  4. Tyrosine residue at position 296 in the seventh transmembrane domain
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TLS Online TPP Program

#Question id: 32330

#Unit 1. Molecules and their Interaction Relevant to Biology

The parietal cells of the stomach lining contain membrane “pumps” that transport hydrogen ions from the cytosol (pH 7.0) into the stomach, contributing to the acidity of gastric juice (pH 1.0). Calculate the free energy required to transport 1 mol of hydrogen ions through these pumps.  Assume a temperature of 37 °C.
TLS Online TPP Program

#Question id: 32331

#Unit 2. Cellular Organization

Following statements about actin filament assembly are correct EXCEPT:
TLS Online TPP Program

#Question id: 32332

#Unit 2. Cellular Organization

The kinetic rate constants for actin subunit association and dissociation— kon and koff, respectively are much greater at the:
TLS Online TPP Program

#Question id: 32333

#Unit 2. Cellular Organization

When the free-energy change (ΔG) for addition of the soluble subunit is less than zero, then:
TLS Online TPP Program

#Question id: 32334

#Unit 2. Cellular Organization

Which of the following actin binding protein binds monomers & concentrates them at sites of filament assembly?
TLS Online TPP Program

#Question id: 32335

#Unit 2. Cellular Organization

Which of the following actin binding protein nucleates assembly and remains associated with the growing plus end?