Protein trafficking

Descripción

Test sobre Protein trafficking, creado por Chau Tran el 17/11/2019.
Chau Tran
Test por Chau Tran, actualizado hace más de 1 año
Chau Tran
Creado por Chau Tran hace más de 4 años
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Resumen del Recurso

Pregunta 1

Pregunta
Which trafficking pathway is highlighted in the picture?
Respuesta
  • Biosynthetic pathway
  • Endocytic pathway
  • Secretory pathway
  • Nuclear export pathway

Pregunta 2

Pregunta
The depicted trafficking pathway is regulated by cellular signals.
Respuesta
  • True
  • False

Pregunta 3

Pregunta
Which experiment is a genetic approach to characterize the components and the molecular mechanism of the endomembrane system?
Respuesta
  • Cell-free systems
  • Live-cell imaging
  • Pulse-chase labelling
  • Mutant phenotype analysis

Pregunta 4

Pregunta
Which experiments make use of microsomes to study the endomembrane system?
Respuesta
  • Pulse-chase labelling
  • Cell-free systems
  • Subcellular fractionation
  • Live-cell imaging

Pregunta 5

Pregunta
Which is the organelle with the largest surface area?
Respuesta
  • Golgi
  • Endoplasmic reticulum
  • Plasma membrane
  • Nucleus

Pregunta 6

Pregunta
The signal sequence is a short stretch of [blank_start]hydrophobic[blank_end] amino acids at the [blank_start]N-terminus[blank_end] of a nascent protein that serves as an [blank_start]ER-targeting[blank_end] signal.
Respuesta
  • hydrophobic
  • hydrophilic
  • N-terminus
  • C-terminus
  • ER-targeting
  • nuclear export
  • Golgi-targeting

Pregunta 7

Pregunta
SRP stands for "[blank_start]signal recognition particle[blank_end]".
Respuesta
  • signal recognition particle

Pregunta 8

Pregunta
Which of the following is a multi-protein complex with an hour-glass shaped aqueous pore?
Respuesta
  • NPC
  • Sec61
  • SRP
  • Proteosome

Pregunta 9

Pregunta
TMD stands for "[blank_start]transmembrane domain[blank_end]".
Respuesta
  • transmembrane domain

Pregunta 10

Pregunta
TMD is a short stretch of hydrophobic amino acids which serves as a [blank_start]stop transfer sequence[blank_end].
Respuesta
  • stop transfer sequence

Pregunta 11

Pregunta
UPR ([blank_start]unfolded protein response[blank_end]) initiates pathways that lead to either the production of more chaperone protein or a global reduction in protein synthesis to alleviate ER stress.
Respuesta
  • unfolded protein response

Pregunta 12

Pregunta
The process in which misfolded proteins are shuttled out of the ER to the [blank_start]cytosol[blank_end] where the oligosaccharide chain is removed and the protein is degraded in the [blank_start]proteasome[blank_end] is called [blank_start]ERAD[blank_end] ([blank_start]ER-associated degradation[blank_end]).
Respuesta
  • proteasome
  • ERAD
  • ER-associated degradation
  • cytosol

Pregunta 13

Pregunta
During core modification of a glycoprotein, the last remaining glucose is removed by
Respuesta
  • Glycosidase I
  • Glycosidase II
  • Glycosidase III
  • Calnexin

Pregunta 14

Pregunta
UGGT is an ER chaperone which recognizes [blank_start]hydrophobic[blank_end] regions of misfolded proteins and tags them for refolding by adding back a [blank_start]glucose[blank_end] molecule.
Respuesta
  • hydrophobic
  • negatively charged
  • hydrophilic
  • glucose
  • fatty acid

Pregunta 15

Pregunta
In the endomembrane system, the new membrane can only arise from the existing membrane.
Respuesta
  • True
  • False

Pregunta 16

Pregunta
According to current knowledge, which of the following are not components of the endomembrane system?
Respuesta
  • Nucleus
  • Golgi
  • ER
  • Lysosome
  • Endosome
  • Clathrin-coated vesicle
  • Mitochondria
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