Many proteins on the outer surface of the cell are receptors, sites that “recognize” and bind with specific extracellular chemical messengers (signal molecules) in the cell’s environment. a. True b. False

Q: Receptor downregulation often occurs via endocytosis as a means of turning off a signaling pathway.…

A: After Endocytosis,most membrane proteins and lipids return to the cell surface ,byut some…

Q: The carbohydrate chains projecting from the plasma membraneare involved ina. adhesion between cells.…

A: Introduction  Cell is the basic unit of life. All organisms be it single cellular or multicellular,…

Q: Which of the following statements about neurotransm O Neurotransmitters derived from amino acids…

A: Neurotransmitters are chemical messengers that send a signal from a neuron to a target cell, which…

Q: "Like the lumen of the ER, the interior of the nucleus is topologically equivalent to the outside of…

A: The endoplasmic reticulum and the nucleus are membrane-bound organelles that are constantly in close…

Q: Glucose can be transported into cells with a glucose/sodium symporter. If the extracellular…

A: Glucose is the major nutrient in the animals obtained after the digestion of carbohydrates. The…

Q: The cell membrane surrounds some smaller molecules in solution and takes them into the cell. This is…

A: Introduction: A bilayer forms the cell membrane. This is composed of phospholipids with polar,…

Q: Uniporters are protein channels that move one specific substance across a cell membrane.  Identify…

A: Uniporters are integral membrane proteins in nature. They are associated with the transportation of…

Q: Describe how water-soluble ligands transmit a signal into a cell.

A: A ligand is a molecule that attaches to another molecule and, in some situations, sends a signal as…

Q: The cell is triggered to make insulin when a glucose molecule binds to a receptor on the surface of…

A: The endocrine system commands and coordinates the complex actions of the body by secreting chemical…

Q: Which describes a cellular role of RanGEF?

A: Correct answer is : maintain Ran in the GTP bound form in the nucleus.

Q: Which is the definition of 'retrograde' with respect to membrane trafficking?     movement from…

A:

Q: . What can you infer regarding the function of Aquaporin 3? b. How will the drug treat constipation?…

A: The family of small proteins that are pore-forming proteins seen in the membrane is called…

Q: Choose one of the small molecules. List what it's macro- molecule Structure is and describe how the…

A: Glucose molecules- is one of smallest molecules and it provides energy, from the structure of the…

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.