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Intracellular signaling

Gintarė 8 questions

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Questions in this quiz (8)

  1. 1Which of the following doesn't exist?
    1. APhospholipase C gama
    2. BProtein kinase B
    3. CProtein kinase A
    4. DPhospholipase C alfa
    5. Ephospoholipase C beta
  2. 2Inositol trisphosphate-gated calcium channels are located in...
    1. Aregulated exocytotic vesicles
    2. Bthe plasma membrane
    3. Cthe inner mitochondrial membrane
    4. Dthe smooth endoplasmic reticulum
    5. Eall of the above
  3. 3Which of the following statements is false?
    1. Aappearance of PIP3 at the plasma membrane can activate a protein kinase
    2. Bhydrolysis of GTP by Ras can activate a protein kinase
    3. Can increase of cytosolic cAMP concentration can activate a protein kinase
    4. Ddimerization of growth factor receptors can activate a protein kinase
    5. Ean increase of cytosolic calcium concentratiojn can activate a protein kinase
  4. 4Which of the following is an enzyme, one of whose substrates is a nucleotide triphosphate?
    1. ARas
    2. BThe PDGF receptor
    3. CProtein kinase A
    4. DThe insulin receptor
    5. EAll of the above
  5. 5Phosphotidylinositol bisphosphate is used in two different signaling pathways. these convert it, respectively into:
    1. AcAMP and c GMP
    2. BIP3 and PIP3
    3. CPIP2 and c AMP
    4. DIP3 and cAMP
    5. EPIP2 and PIP3
  6. 6Arrival of a scent chemical at a scent-sensitive nerve cell causes that cell to
    1. Agenerate action poencials
    2. Bopen voltage-gated sodium channels in the plasma membrane
    3. Copen cAMP-gated channels in the plasma membrane
    4. Dactivae adenylate cyclase
    5. Eall of these above
  7. 7Depolarization of axon terminals causes calcium ions to flow into the cytosol through
    1. Acalcium ATPases
    2. Bvoltage - gated calcium channels
    3. CcAMP-gated calcium channels
    4. Dinositol trisphosphate-gated calcium channels
    5. Eryanodine receptors
  8. 8Why majority of transmitters are released from cells by exocytosis?
    1. Abecause different set of receptors activates Gs
    2. BTyrosine kinases are Grb2 receptors
    3. CBecause exocytosis is induced by an increase of cytosolic calcium concentration

Information

Description
Cell biology, second edition, shorter course
Author
Gintarė
Language
English
Views
88
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