When a catecholamine or peptide hormone binds to receptors on the surface of a cell,   A. The hormone is transported to the nucleus where it alters the activity of dna. B. The cell membrane becomes less permeable. C. The cell becomes inactive. D. A second messenger appears in the cytoplasm.

Q: Which of the following receptor signaling pathways require that the growth factor/activator…

A: Signaling molecules also known as ligands are produced by signaling cells and the subsequent binding…

Q: Which of the following is NOT a trait of lipid-soluble hormones? A. They often need help of carrier…

A: Hormones are messenger molecules that affect the distantly located target cells. They travel through…

Q: Which of the following are methods of cellular signaling?   Select one: a. All the answers are…

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

Q: what happens when an agonist, instead of the endogenous (natural) hormone binds to the hormone…

A: Option A is incorrect  Explanation:  Antagonist binds to the receptor of a natural hormone and…

Q: Which of the following is a prohormone and can be converted to an active hormone as needed? A.…

A: A prohormone can be defined as the committed precursor of a hormone made up of peptide hormones…

Q: If a cell were to have an unusually large response to cortisol, what effect would you expect to see?…

A: *Cortisol is  an  glucocorticoid synthesized in the zona fasciculata of the adrenal cortex.…

Q: Which of the following occurs once the lipid-soluble hormone diffuses across the plasma membrane…

A: Lipid-soluble hormones are hormones that can easily diffuse across cell membranes because they are…

Q: How does the binding of a hormone to a receptor activate a G-protein?     a. It replaces bound GDP…

A: G Protein Coupled Receptors These are also called metabotropic receptors or heptahelical…

Q: Which of the following does NOT generally lead to a phosphate cascade?   A. active transport pumps…

A: In our body, several types of cellular process occurs, which involves the cellular signalling…

Q: which of the following happens when a therapeutic synthetic hormone is introduced into the body to…

A: Hormones are chemical messengers secreted into the blood or extracellular fluid by one cell that…

Q: What is the principal difference of endocrine system from other signaling systems?   Select one:…

A: Cells are the basic structural and functional units of living organisms that are essential for the…

Q: Different cell-types can use the same receptor-type to detect a common hormone, which leads to the…

A: Hormones are small molecules that act as chemical messengers in the body. A small amount of hormone…

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: A_______ is synthesized from cholesterol and can diffuse across the plasma membrane.a. steroid…

A: Answer is a .) steroid hormone.

Q: One advantage chemical signaling has over electrical signaling is thata. reaction to stimuli can…

A: Cell to cell communication is very important for the normal functioning of the body. It helps in the…

Q: which of these events will MOST quickly stop the transduction of the signal?

A: G proteins are a group of signaling molecules present in the plasma membranes nearby to a receptor…

Q: Second messengers are activated in response to a. steroid hormones. b. thyroxine. c.…

A: The second messengers are certain kinds of molecules which received signals at receptors on the…

Q: A certain peptide hormone is produced in the anterior pituitary gland located at the base of the…

A: Hormones are the chemical messengers,which is produced in very trace amounts by the glands and act…

Q: not

A: SIGNALING- A ligand binds to a cell -surface receptors, the receptors intracellular domain changes…

Q: Paracrine signaling is characterized by ligands that are a. produced by the cell itself. b.…

A: There are generally four different types of chemical signaling present in multicellular organisms:…

Q: What happens when an agonist, instead of the endogenous (natural) hormone, binds to the hormone…

A: Hormones are chemical messengers that interface with receptors present on the outside of a cell…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.