Intracellular signaling

Gintarė
Quiz by Gintarė, updated more than 1 year ago
Gintarė
Created by Gintarė about 7 years ago
48
0

Description

Cell biology, second edition, shorter course

Resource summary

Question 1

Question
Which of the following doesn't exist?
Answer
  • Phospholipase C gama
  • Protein kinase B
  • Protein kinase A
  • Phospholipase C alfa
  • phospoholipase C beta

Question 2

Question
Inositol trisphosphate-gated calcium channels are located in...
Answer
  • regulated exocytotic vesicles
  • the plasma membrane
  • the inner mitochondrial membrane
  • the smooth endoplasmic reticulum
  • all of the above

Question 3

Question
Which of the following statements is false?
Answer
  • appearance of PIP3 at the plasma membrane can activate a protein kinase
  • hydrolysis of GTP by Ras can activate a protein kinase
  • an increase of cytosolic cAMP concentration can activate a protein kinase
  • dimerization of growth factor receptors can activate a protein kinase
  • an increase of cytosolic calcium concentratiojn can activate a protein kinase

Question 4

Question
Which of the following is an enzyme, one of whose substrates is a nucleotide triphosphate?
Answer
  • Ras
  • The PDGF receptor
  • Protein kinase A
  • The insulin receptor
  • All of the above

Question 5

Question
Phosphotidylinositol bisphosphate is used in two different signaling pathways. these convert it, respectively into:
Answer
  • cAMP and c GMP
  • IP3 and PIP3
  • PIP2 and c AMP
  • IP3 and cAMP
  • PIP2 and PIP3

Question 6

Question
Arrival of a scent chemical at a scent-sensitive nerve cell causes that cell to
Answer
  • generate action poencials
  • open voltage-gated sodium channels in the plasma membrane
  • open cAMP-gated channels in the plasma membrane
  • activae adenylate cyclase
  • all of these above

Question 7

Question
Depolarization of axon terminals causes calcium ions to flow into the cytosol through
Answer
  • calcium ATPases
  • voltage - gated calcium channels
  • cAMP-gated calcium channels
  • inositol trisphosphate-gated calcium channels
  • ryanodine receptors

Question 8

Question
Why majority of transmitters are released from cells by exocytosis?
Answer
  • because different set of receptors activates Gs
  • Tyrosine kinases are Grb2 receptors
  • Because exocytosis is induced by an increase of cytosolic calcium concentration
Show full summary Hide full summary

Similar

Function and Structure of DNA
Elena Cade
Cell Transport
Elena Cade
Unit 1 flashcards
C R
Cells, Tissues and Organs
yusanr98
Cells And Cell Techniques - Flashcards (AQA AS-Level Biology)
Henry Kitchen
AQA Biology 12.1 cellular organisation
Charlotte Hewson
Cells and the Immune System
Eleanor H
GCSE AQA Biology - Unit 2
James Jolliffe
Biology AQA 3.1.3 Cells
evie.daines
Biology Unit 2 - DNA, meiosis, mitosis, cell cycle
DauntlessAlpha
Mitosis
Selam H