Question 1. Cytoplasmic kinases are typically activated in the cytoplasm: A. as part of a cascade. B. and then immediately inactivated to halt the signaling pathway. C. downstream of an activated receptor. D. A and B E. A and C

Q: Question 10. How do RabGTPases contribute to vesicle targeting? A. They tether vesicles to the…

A: Introduction: The process by which vesicles (small membrane-bound sacs) move within cells to…

Q: Match the following with the term that best describes them ✓cellular currency of cell that enables…

A: The plasma membrane is the outer covering of cell. It is responsible for separating the…

Q: Question 4. Which of the following statements are true of tyrosine kinases? A. They always bind to a…

A: Introduction : Enzymes called tyrosine kinases phosphorylate the amino acid tyrosine on particular…

Q: A mutation in HER2 that causes receptor dimerization in the absence of signaling molecules. Would…

A: Answer - B. Increases proliferation HER2 (human epidermal growth factor receptor 2) is a gene it…

Q: QUESTION 50 In a signal transduction pathway involving a G protein-coupled receptor, the receptor…

A: Introduction Signal transduction pathway involves the binding of  the extracellular signaling…

Q: G protein-GTP directly regulates: O a. GP kinase а. O b. Adenyl cyclase С. C. Glycogen phosphorylase…

A: G-Protein - any protein linked with guanosine. G-protein - Heterotrimeric and is a lipid anchoring…

Q: You inject a large fluorescent dye with a molecular weight >10,000 Da into a cell that is connected…

A: Gap junctions are intercellular channels that allow direct communication between the cytoplasm of…

Q: QUESTION 13 Suppose that the genes for the light chain of an IgG molecule, carry different 300 V…

A: Antibodies identify and interact with particular antigen sections known as epitopes or antigenic…

Q: QUESTION 4 The following proteins are often made as inactive precursors: a. Blood clotting factors O…

A: The protein precursor also called pro-protein or pro-peptide is an inactive protein that can be…

Q: Select the correct order of the following steps in IP3 signaling: + IP3 binds to ligand-gated…

A: Correct order of IP3 signaling:- 1. The ligand bind to the receptor. 2. The G protein swaps out GDP…

Q: Which of the following elements may be in the transduction part of cell signaling? Select one: a.…

A: Ans: Signal transduction: The process of transporting signal from cells exterior to the internal is…

Q: Caspases are involved in ______________. Select one: a. promoting the cell cycle b. promoting cell…

A: Caspases are cysteine dependent proteases. They help in cell death.

Q: Thinking Question #1 You have been asked to design some drugs for the purposes described below.…

A: Enzymes are the biological catalyst. It has efficiency, specificity, and mode of regulation. It…

Q: For this question, you will need to look up ABCA1 on the Internet. Now a. What is ABCA1? b. What is…

A: The ABCA1 gene is responsible for encoding the ABCA1 protein.

Q: QUESTION 5 How is cytokinesis in plant cells different from cytokinesis in animal cells? A.…

A: The process of separation of the cytoplasmic contents of a cell into two separate daughter cells is…

Q: Question 8. In a patient that has a mutation in the enzyme that adds phosphate groups to the mannose…

A: A mutation is a change in the DNA sequence of a gene or chromosome. Mutations can be caused by…

Q: Question 1. Cytoplasmic kinases are typically activated in the cytoplasm:

A: Cytoplasmic kinases are proteins found in the cytoplasm and are involved in signal transduction…

Q: Which of the following is a property of signaling for epinephrine, growth hormone, GIP and…

A: Cell communication in biology is referred to as cell signaling which is the ability of a cell to…

Q: Question 29 Expression of genes independently of regulation is termed: A constitutive expression. (B…

A: Ans 29  - the correct answer of the above question is B) AUTOREGULATION. Expression of genes…

Q: Which membrane protein is responsible for binding hormones that can trigger changes in the cell's…

A: Membrane protein: These are the protein molecule which are attached to the membrane of cell or cell…

Q: Ligand-activated receptors should be ________ before they can bind DNA and activate transcription.…

A: The ligand- receptors are the proteinaceous substances which allows the binding of the ligands to…

Q: Question 4. Which of the following statements are true of tyrosine kinases? A. They always bind to a…

A: Tyrosine kinase is a special enzyme that selectively phosphorylates the tyrosine residues. Their…

Q: Question 16 Which hormone utilizes a "hormone response element" as part of its signaling mechanism?…

A: A hormone response element (HRE) is a specific DNA sequence within the promoter region of a target…

Q: Question 1 A new receptor has been discovered in the cells of the human liver. The following…

A: A protein called mitochondrial antiviral-signaling protein (MAVS) is required for innate antiviral…

Q: not

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

Q: Question 8: What type of cell junction allows very rapid communication between cells by allowing…

A: Introduction :- Cytoplasm is a thick liquid that fills each cell and is surrounded by the cell…

Q: Question 5. What is the effect on a target mRNA when it is silenced by a miRNA that has a complete…

A: Protein synthesis is one complex procedure taken up by the cell and that needs various components to…

Q: Which of the following methods can be used to regulate the activity of cyclin-dependent kinases…

A: CDK are the protein kinase which are involved in the regulation of cell cycle.

Q: Question 24 Which of the following is not a cell surface receptor? GPCR DNA-associated receptor RTK…

A: Biochemical cell signalling is the method by which cell communicates with each other cells and…

Q: The salt marsh plant pickleweed or Salicornia bigelovii is, not surprisingly, very salt tolerant. It…

A: Pickleweed is also known as marshfire.

Q: A substance that forms a complex with another biomolecule to exert a biological effect is called a:…

A: In the intricate realm of biology, various biomolecules interact and collaborate to orchestrate the…

Q: In focal adhesions, large clusters of integrins bond to which cellular component via various protein…

A: Focal adhesions are involved in cell locomotion containing integrins that develop transient…

Q: If your sepharose beads are covalently attached to adrenaline hormone, which of the following…

A: Affinity chromatography is a biochemical technique which is used to separate molecules based on the…

Q: A mutation in cyclin destroys the protein’s binding site. How would this directly affect cellular…

A: Eukaryotic cells possess a submicroscopic complex supportive framework of protein fibers and tubules…

Q: Question 2. In the presence of low levels of GTP, microtubules inside a cell will undergo due to…

A: Microtubules are essential components of the cytoskeleton in eukaryotic cells, playing crucial roles…

Q: Which of the following membrane-crossing mechanisms requires energy? O a. Turgor O b. Active…

A: Active transport It is the transport of substances from a region of lower concentration to higher…

Q: Which of the following is true regarding signaling? d. G proteins activate their target proteins by…

A: G proteins are a family of proteins that act as molecular switches inside cells, and are involved in…

Q: The body produces a normal amount of testosterone. However, a particular cell you are studying has…

A: Answer - B. The cell will make less mRNA in response to testosterone exposure. Explanation - The…

Q: Which of the following is not true/accurate with respect to p53?   a. is a tumor-suppressor   b.…

A: p53 is a tumor-suppressor protein that is mutated in nearly all malignancies. Cell cycle arrest and…

Q: QUESTION 20 Polyunsaturated fats a. are gas at room temperature b. are solid at room temperature c.…

A: 20. Definition: Fatty acids having more than one double bond are called polyunsaturated fatty acids…

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.