Protein trafficking

Descrição

Quiz sobre Protein trafficking, criado por Chau Tran em 17-11-2019.
Chau Tran
Quiz por Chau Tran, atualizado more than 1 year ago
Chau Tran
Criado por Chau Tran aproximadamente 5 anos atrás
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Resumo de Recurso

Questão 1

Questão
Which trafficking pathway is highlighted in the picture?
Responda
  • Biosynthetic pathway
  • Endocytic pathway
  • Secretory pathway
  • Nuclear export pathway

Questão 2

Questão
The depicted trafficking pathway is regulated by cellular signals.
Responda
  • True
  • False

Questão 3

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

Questão 4

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

Questão 5

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

Questão 6

Questão
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.
Responda
  • hydrophobic
  • hydrophilic
  • N-terminus
  • C-terminus
  • ER-targeting
  • nuclear export
  • Golgi-targeting

Questão 7

Questão
SRP stands for "[blank_start]signal recognition particle[blank_end]".
Responda
  • signal recognition particle

Questão 8

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

Questão 9

Questão
TMD stands for "[blank_start]transmembrane domain[blank_end]".
Responda
  • transmembrane domain

Questão 10

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

Questão 11

Questão
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.
Responda
  • unfolded protein response

Questão 12

Questão
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]).
Responda
  • proteasome
  • ERAD
  • ER-associated degradation
  • cytosol

Questão 13

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

Questão 14

Questão
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.
Responda
  • hydrophobic
  • negatively charged
  • hydrophilic
  • glucose
  • fatty acid

Questão 15

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

Questão 16

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

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