Ion channels are transmembrane proteins that allow the rapid passage of ions across membranes. They have...

Ion channels are transmembrane proteins that allow the rapid passage of ions across membranes. They have exquisite specificity and can selectively open or close. The opening and closing is a process known as “gating”. Distinguish the following types of channels:

(a) Ligand-gated channels

(b) Signal-gated channels

(d) Mechanoselective channels

Solutions

Expert Solution

Felt great to answer. Good luck!

gladiator answered 1 year ago

Next > < Previous

Related Solutions

Ion channels are transmembrane proteins that allow the rapid passage of ions across membranes. They have...

Ion channels are transmembrane proteins that allow the rapid passage of ions across membranes. They have exquisite specificity and can selectively open or close. The opening and closing is a process known as gating. Distinguish the following types of channels: 1. Ligand-gated channels 2. Signal-gated channels 3. Voltage-gated channels 4. Mechanoselective channels

Q5. Aquaporins are water channels that allow rapid transport across cell membrane. You are interested in the...

Q5. Aquaporins are water channels that allow rapid transport across cell membrane. You are interested in the role that these channels play in cerebral edema (brain swelling) after traumatic brain injury (TBI). This channel is expressed on a type of cell in the brain called an astrocyte which is responsive to osmotic pressure and helps regulate fluid balance in the nervous system. A) Describe what happens to astrocytes when they are placed in i) hypertonic solution and ii) hypotonic solution. How...

What properties of ions and their respective transmembrane channels make K+ channels selective for a specific...

What properties of ions and their respective transmembrane channels make K+ channels selective for a specific ion? (Hint: focus on pore and the selectivity filter).

Cystic Fibrosis Transmembrane conductance Regulator (CFTR) is an ABC transporter that allows passage of chloride ions...

Cystic Fibrosis Transmembrane conductance Regulator (CFTR) is an ABC transporter that allows passage of chloride ions across the plasma membranes of epithelial cells. Mutations in the gene for CSTR cause a decrease in fluid and salt secretion by CFTR and result in cystic fibrosis. In 70% cases of the disease, the mutation is a deletion of a Phe residue at position 508. The mutant protein folds incorrectly, which interferes with its insertion in the plasma membrane, and as a consequence,...

The transport of ions across cell membranes is a key part of the processes of generation...

The transport of ions across cell membranes is a key part of the processes of generation and conduction of action potentials in neurons. a) Why do ions require an integral membrane protein in order to pass across neuronal cell membranes? Briefly discuss the specific ion channels and transporters that are involved in the generation and conduction of a neuronal action potential, and indicate whether the protein is involved in facilitated diffusion or active transport of ions. How does myelination of...

which of the following statements is true? a) Metabotropic receptors allow the passage of ions through...

which of the following statements is true? a) Metabotropic receptors allow the passage of ions through an opened channel b) Metabotropic receptors frequently initiate signal transduction cascades c) Plasma membranes are impermeable to ligands for nuclear receptors, but permeable to ligands that bind receptors in the plasma membrane e) Plasma membrane receptors usually behave like transcription factors when bound by their ligand

Tight junctions: a. allow communication between cells and an exchange of ions b. cause cell membranes...

Tight junctions: a. allow communication between cells and an exchange of ions b. cause cell membranes to tightly fuse together c. extend around the cell like a belt d. connect adjacent cells and their cytoskeleton e. all of the above

If membrane proteins could flip-flop across bilayer leaflets easily, how would the function of the transmembrane...

If membrane proteins could flip-flop across bilayer leaflets easily, how would the function of the transmembrane protein Na+/K+ ATPase (sodium-potassium pump) be affected? What will happen to the resting membrane potential?

Describe mechanisms by which ion channels, protein phosphorylation and G-proteins give cells an ON or OFF...

Describe mechanisms by which ion channels, protein phosphorylation and G-proteins give cells an ON or OFF response for cell signaling. Describe this for each of these three processes, in the specific prompts below. Be sure be clear about where these mechanisms are distinct from one another. What are the inactive and inactive states? How does signal input activate the system? How is the system returned to inactive state?

All cells contain ion pumps that use the energy at ATP hydrolysis to pump ions across...

All cells contain ion pumps that use the energy at ATP hydrolysis to pump ions across the plasma membrane. These pumps create an electrochemical gradient across plasma membrane, including some transport processes In animal cells, the main ion pump is the sodium potassium pump. Complete the diagram below using the following steps. 1. Drag the correct while label to the white target, indicating how many move through the pump and in which directions. 2. Drag the pink labels to the...

Subjects