19. Which one of the following best describes inherent receptors? Select one: a. Activated only in the absence of chemical messenger b. Activated in the presence or absence of chemical messenger c. Activated only in the presence of chemical messenger d. Activated only in the presence of high concentration of chemical messenger

Q: Contrast receptor down-regulation and receptors desensitization.

A: A reduction in the quantity of receptors on the surface of target cells, creating the cells less…

Q: Which of these molecules is most likely to interact with an intracellular receptor? О HO НО H₂N ОН…

A: The cellular receptors are involved in signal transduction processes.Cell surface or membrane…

Q: Which.of the following statements is WRONG? Select one: O a. Nerve cells have excitable membranes O…

A: Introduction: Neurons, also referred to as nerve cells, are the basic fundamental units of the…

Q: Drugs bind to receptor and give response to the body. What type of binding involve in this process ?

A: Receptors are large molecules that play a role in biochemical communication among and inside cells.…

Q: How can cells that have the same receptor present a different response?

A: The binding of chemical signals to their corresponding receptors induces events at intervals in the…

Q: Which of the following is incorrect? a. Ka is the [ligand] when all the receptors have bound ligand…

A: Kd is dissociation constant that help in determining the affinity of receptor ligand binding. Higher…

Q: Which of these is NOT a response that occurs when an intercellular chemical signal binds to a…

A: There are three kinds of signaling cascade through which cell receives a signal to the plasma…

Q: A. What is the original ligand in the image? B. What is the second messenger in this pathway? C.…

A: Cellular signaling is a process of communication or passing form one cell to another by signaling…

Q: Side effects of darin gas include pinpoint pupils and excessive salivation. Explain how this could…

A: Sarin is a chemical agent produced by humans and they are the most dangerous and fast-acting of the…

Q: Which of the following receptor types is NOT a membrane receptor? a. Channel-linked receptor b.…

A: Answer is d.)  Steroid hormone receptors.

Q: Which of the following is NOT an example of communication that happens from one neuron to another…

A: Answer: - Option a - Endocrine signalling (ex. hormones secreted into the bloodstream travel and…

Q: An unknown ion is flowing out of a neuron, creating an inhibitory response.  This unknown ion…

A: Question -   An unknown ion is flowing out of a neuron, creating an inhibitory response.  This…

Q: Name the steps that occur when a signal binds to a receptor on a responding cell.

A: The cell signaling cascade gets activated by the binding of the ligand on the surface of the…

Q: 7. Assuming equivalent stimulation of the two pre-synaptic axons in the diagram below, in which of…

A: Neurons communicate by using chemical messengers like serotonin between cells. Serotonin transporter…

Q: 1. Ionotropic GABA receptors are ligand-gated Cl channels which open during GABA-ergic signaling. a)…

A: Introduction Neurons are specialized cells that are the basic building blocks of the nervous system.…

Q: ... A(n) binds to a receptor and elicits a biological effect; while a(n) binds to a receptor but…

A: Binding of certain molecules at their receptors involves the eliciting of response that can be…

Q: The following diagram helps explain which of the following phenomena? C fiber (nociceptive)…

A: Pain is referred to as a primary human instinct which can be briefed as a distressing sensation or…

Q: What is the difference in structure between G-protein linked receptors and enzyme-linked receptors?

A: The structure of G-protein linked receptors is different from the enzyme linked receptors.

Q: 1a) Create a diagram which illustrates the typical signaling mechanism of action G protein-coupled…

A:

Q: In most neurons, membrane depolarization leads to the opening of voltage-dependent ion channels,…

A: The sense organ that allows vision by reacting to light in humans is the eye. Photoreceptor cells…

Q: An elderly man with high blood pressure is prescribed a medication that lowers blood pressure. Which…

A: Hypertension, also known as high blood pressure (HBP), is a long-term medical condition in which the…

Q: example of endogenous substances that mediate or transmit noceiptive signaling include. A.…

A: The correct answer is:B. Substance P, CGRP, enkephalinSubstance P, CGRP, and enkephalin are all…

Q: Intracellular receptors bind to signaling molecules that are   A. anionic.   B. cationic.   C.…

A: Introduction:- Receptors are the cellular protein molecules that binds to their specific ligand or…

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.