Which of the following mechanism will be activated if there is a shortage of cellular and endoplasmic reticulum Ca2+ reserve? O DAG will activate protein kinase C to release calcium bound to calmodulin ER membrane protein STIM1 will activate plasma membrane Orai1 channel All of the other mechanisms will be activated IP3 signaling will release stored calcium from the ER O DAG will activate protein kinase C to activate store operated calcium channel in the plasma membrane < Previous Next >

Q: The following figure diagrams a G protein in action. Which step in this signalling pathway…

A: In the very first step, step 1 that represents in the reception in this signalling the  pathway. G…

Q: This type of ion channel allows K+ ions to flow into or out of a cell down its concentration…

A: The cell membrane is a semi-permeable membrane which allows only specific ions and molecules to move…

Q: Diagram above and describe below how signaling through Rho proteins and PIP2 function in polarizing…

A: Cell polarization, the establishment of a distinct cellular front and rear, is a fundamental process…

Q: Imagine that there is a mutation in the SRP receptor that disrupts its function. What is the logical…

A: Proteins that are synthesized on ribosomes bound to the Endoplasmic reticulam are known as Secretary…

Q: Cytokine receptors and tyrosine kinase receptors are similar in all of the following ways EXCEPT…

A: Cytokine receptors are small signaling proteins that help in both immune response and cell…

Q: Intracellular receptors usually bind + O Water-soluble signals O Large molecules that act as signals…

A: Introduction :- Receptors are specialized proteins that are located on the surface or within cells,…

Q: Which layer is involved in the phosphorylation and dephosphorylation of various intracellular…

A: Cell signaling (also known as signal transduction or cellular communication) is a complex system of…

Q: Drag and drop the characteristics that apply to each ion type. Note: there may be several items that…

A: Ans. Once established, the resting potential is maintained with the help of the actions of the…

Q: Match the below types of cell communication with the appropriate descriptions Small hydrophobic…

A: Cell signalling is the transmission of signal from a cell to another. Types of cell signalling are -…

Q: Neuronal control of macrophage function in acute disease like septic shock in mice involves each of…

A: The correct option is - vagal signals are transmitted via acetylcholine that binds alpha 7 nicotinic…

Q: Which of the following could result in the continuous activation of a cell signalling pathway? A…

A: The correct option is: A mutation resulting in a ligand gated ion channel being unable to open.…

Q: Which of the following ion channels are always sensitive to small changes in electric charge?…

A: Transport through the cell membrane is important for cells to supply nutrients, ions, and other…

Q: This type of signal involves the movement of ions across the plasma membranes: graded potentials…

A: Cell connections link directly to the cytoplasm of neighboring cells. When cytosolic chemicals can…

Q: Blank 1 options are= closed/open Blank 2 options are on second photo

A: BIK belongs to the family of pro-apoptotic proteins. BIK is mostly localized in the ER. It induces…

Q: Rous Sarcoma Virus can cause cancer in infected cells. The tumor causing nature of the virus is…

A: RTKs are responsible for the phosphorylation of protein at tyrosine residues. Some proteins get…

Q: Which of the following statements about secretion is true? O All secretory vesicles bud off the…

A: Secretion is a highly regulated process in which vesicles bud off from the trans Golgi network in…

Q: When protein membrane receptors are activated, what usually happens? The receptors open and close in…

A: Question - When protein membrane receptors are activated, what usually happens?  The receptors open…

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

A: The process by which a cell receives or sends signals within itself and with the other cells is…

Q: Which membrane proteins are involved in the potentiation of the membrane signalling that travels…

A: Action potential is the mode through which the  neuron transports  to the electrical signals. It is…

Q: N Signal Sequence The schematic above depicts a protein with the indicated signaling sequences along…

A: Protein sorting is the process where the proteins are transported to their particular destination or…

Q: Choose high or low When the ion binding sites pumps are open to the inside of the cell the pump has…

A: The sodium potassium pump transports three sodium ions out of the cell when it opens inside the…

Q: 3 of 16 Which statement about the IP3ODAG pathway is false? O Diacylglycerol can act as a second…

A: IP3 stands for inositol triphosphate. DAG stands for diacylglycerol.

Q: Membrane Potential (mV) -70 + 1 3 Time (ms) 1 Na* continues to rush into the cell E Excess…

A: The Na +K + pump is found in cell membrane of neurons as well as in other animal cells. It helps in…

Q: Which of the following represents amplification? O G protein activation by GPCR O Arrestin binding…

A: Signal transduction is the process by which a chemical or physical signal is transmitted through a…

Q: Put the steps of the process of G-protein signal transduction in the order (1-4) in which they…

A: Proteins are the ultimate products of the genes. DNA is transcribed into m RNA and this is…

Q: Cell swelling will most directly affect which type of channel protein? Group of answer choices…

A: Cell swelling is an change that occurs in acute cell injury and It may be a simply disappear as the…

Q: You have discovered a new human genetic disorder that affects a relay molecule involved in the…

A: Dopamine is a feel good hormone. Dopamine is a hormone and neurotransmitter. It produces positive…

Q: An experimental cell line expresses K+ inward rectifier channels, Na+ leak channels, K+ channels…

A: Because alpha-1 adrenergic receptors are found in both vascular smooth muscle and cardiac tissue,…

Q: Which of the following is True about the STAT signaling cascade? O It amplifies signal for TGF-B…

A: Latent cytoplasmic transcription factors have been identified as STATs (signal transducers and…

Q: Except for?, all of the following signals may trigger receptor conformational changes without…

A: Because certain signaling chemicals are unable to pass through the plasma membrane, their receptors…

Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.