choose one: a. Steroids are hormones processed by their target cells at the plasma membrane b. Steroids are hormones which are able to be dissolved in water c. Steroids are made from cholesterol a type of fat d. Steroids do not use nuclear receptors
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choose one:
a. Steroids are hormones processed by their target cells at the plasma membrane
b. Steroids are hormones which are able to be dissolved in water
c. Steroids are made from cholesterol a type of fat
d. Steroids do not use nuclear receptors
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Solved in 3 steps
- Which of the following occurs once the lipid-soluble hormone diffuses across the plasma membrane into the cytoplasm? Identify the most correct answer. O The hormone binds directly to the DNA in the nucleus. O The hormone binds to its specific receptor in the plasma membrane. O The hormone binds to its specific receptor and another receptor binds forming a dimer. O The hormone binds to another transport protein in the cytoplasm. Save for Later 80 F5 F6 F7 Attempts: 0 of 3 used F8 F9 Submit Answer F10The basic elements or molecules of cell signaling I. second messengers - substances that enhances or inhibits activities of other proteins II. effectors - are usually enzymes that catalyzes formation of the second messenger III. receptors - cell membrane transmembrane proteins that interacts with ligands outside the cell IV. first messengers - usually are ligands outside the cell and interacts with transmembrane protein receptors I, III, IV only II, III, IV only I, II, III, IV I, II, III onlySecond messengers are needed because: Most ligands cannot enter the cell so they help transmit messages to the cell interior They speed up the rate at which cells respond to signals They catalyze transcription and translation They provide energy for signal transduction
- ۹:4۶ ص * Ooredoo li. A patient with compromised immune system was prescribed Azathioprine by his physician, in your view through which of the following processes Azathioprine will enter inside the cells. 1. out of Select one: O a. Phagocytosis uonsənb Ob. Receptor-mediated endocytosis Oc. Pinocytosis Od. Osmosis Oe. DiffusionHistamine is a chemical substance released in inflammatory and allergic response. The histamine H1 receptor is a G protein-coupled receptor that activates phospholipase C in response to the binding of histamine. Arrange the data below showing the process of histamine signal transduction from the H1 receptor. Calcium ions flow through ligand-gated ion channel. Phosphorylation cascade leads to the activation of a cellular response. Calcioum ions activate a protein, leading to a cellular response. Enzyme cleaves PIP2, forming DAG and IP3. Calcium iom concentration increases in the cytosol. IP3 binds to a ligand-gated ion channel in thw ER membrane.Which of the following can be correctly applied to gap junctions? Select all that apply Allows small molecules and ions to travel between cells They are membrane channels that allow communication between neighboring cells O Prevents cells from separating from one another O They behave as gated ion channels
- Which of the following statements about G proteins is correct? O A. G proteins bind hormones. O B. G proteins bind receptor tyrosine kinases. O C. G proteins are heterodimers. O D. G proteins phosphorylate protein kinase A (PKA). O E. G proteins bind adenylate cyclase Which of the following steps does NOT require ATP? O A. Conversion of glucose to glucose 6-phosphate O B. Conversion of malate to pyruvate O C. Conversion of pyruvate to oxaloacetate O D. Activation of hormone sensitive lipase by PKA O E. Inactivation of glycogen synthase by PKA is an intermediate metabolite linkage between carbohydrate and fat metabolism. O A. Malate O B. Oxaloacetate O C. Glucose 6-P D. Acetyl CoA O E. Malonyl COAWe study neurons as an example of cell signaling because neurons do not typically have genetic responses due to cell signaling. they give very obvious responses without need of molecular mechanisms. they are quite complex and give us the full range of cell responses. no other cell gives very obvious responses.Which of the following steps occurs first in cell to cell communication? O A membrane protein changes conformation OA ligand binds to a receptor O A G-protein is activated O A docking protein is phosphorylated Previous
- An example of a glycerophospholipid that is involved in cell signaling is: O A. ceramide O B. arachidonic acid. OC. Vitamin A (retinol) O D. phosphatidylinositol 4,5-bisphosphate O E. testosterone CS Scanned with CamScannerCarbon monoxide is a deadly gas. This is due to its quick activation of specific signaling pathways in cells of our body. Since this is a gas, it most likely uses.... Select one: a. A transmembrane cell surface receptor since it cannot pass through cell membranes b. A voltage-gated ion channel receptor since it creates a charge when crossing the cell membrane c. An intracellular receptor since it can easily diffuse across a membraneWhich of the following utilizes receptors that are located in the cytosol? Steroid Hormone Signaling GPCR Singaling Ion channel signaling RTK Singaling