Which of the following can be correctly applied to gap junctions? Select all that apply O Allows small molecules and ions to travel between cells They are membrane channels that allow communication between neighboring cells Prevents cells from separating from one another They behave as gated ion channels

Which of the following can be correctly applied to gap junctions? Select all that apply O Allows small molecules and ions to travel between cells They are membrane channels that allow communication between neighboring cells Prevents cells from separating from one another They behave as gated ion channels

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 2TAHL: Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of...

See similar textbooks

Similar questions

The abundant intercellular connections gab junction can be found in O diaphragm O Heart muscle O Skeletal muscle O Smooth muscle
Which of the following stimuli could trigger the opening of a voltage-gated channel? O a chemical signal any of these could trigger the opening of a voltage-gated channel Oa change in the cellâ s membrane potential physical force on the cell
What is the major determinant of the permeability of a membrane to a specific ion? Concentration of the ion outside the cell O Concentration of the ion inside the cell Number of open ion channels specific for that ion O Electrical charge of the ion
The purpose of gap junction is Question options: to provide intercellular communication allow small ions and electrical impulses to pass between cells A and B A only
If a tissue in the body has cells that contain a large quantity of gap junctions, this likely means that.. the cells are connected together so tight that there are no spaces between the cells the cells are not connected at all the cells are connected together so tight that it is difficult to rip them apart O the cells are connected together in a way that allows them to share cytoplasm
Which of the followings is not true about the function of the Tight Junctions? (LO- K8) They hold the cells together They act as a barrier They help maintain cell polarity They prevent lateral diffusion of proteins, ions, molecules They play an important role in maintaining the blood brain barrier They connect the adjacent cells intercellularly to the intermediate cytoskeletal filaments
The membrane of most cells, including neurons, contains passive, open, K' leak channels. Given the normal K' concentrations and the resultant concentration gradient, which direction would K' be expected to move (diffuse) through these leak channels? Select one: 1/into the cell 2/out of the cell
A cell biologist is performing an experiment using the voltage clamp method in which they are allowed to change the voltage in the membrane potential. They are wanting to record potassium currents and notice that for a certain membrane potential range, the voltage clamp highlights that there is an inward current of potassium. Would these readings make sense?
Which of the following regarding the sodium potassium pump is FALSE? It tends to be found on the apical plasma membrane of polarized cells It transports three sodium ions to the outside of the cell It transports two potassium ions to the inside of the cell. It helps to maintain unequal distribution of ions across the plasma membrane
When a membrane is at rest, which channels are open? O Voltage-gated calcium channels O Voltage-gated potassium channels Leaky potassium channels O All the channels listed are open O Votlage-gated sodium channels
Assume that a membrane permeable to Na+ but not to Cl- separates two solutions. The concentration of sodium chloride on side 1 is higher than on side 2. Which of the following ionic movements would occur? a. Na+ would move until its concentration gradient is dissipated (until the concentration of Na+ on side 2 is the same as the concentration of Na+ on side 1). b. Cl- would move down its concentration gradient from side 1 to side 2. c. A membrane potential, negative on side 1, would develop. d. A membrane potential, positive on side 1, would develop. e. None of the preceding is correct.
Which type of membrane transporter requires a gradient to move molecules across the membrane? O Voltage-gated channels Leak channels O Ligand-gated channels All of the above require a gradient O None of the above require a gradient