Cell signalling Study guides, Class notes & Summaries

Charles-Edouard Brown-Sequard - Answer Injected himself with ground-up animal testicles led to development of modern hormone therapy. Largely placebo Basic Principle of a Cell Signalling Pathway - Answer Stimuli -> Receptors -> Transducers -> Amplifiers -> Messengers -> Sensors and Effectors -> Cellular Responses (Fertilization, Proliferation, Differentiation, Secretion, Contraction, Metabolism, Membrane Excitability, Learning and Memory). Ligand Receptor Interaction - An...

CPPS 325 FINAL EXAM 2023 rated A+What are the 5 well-known enzyme-linked cell surface receptors? - correct answer 1. Receptor Guanylyl Cyclase: produces cGMP 2. RTK: phosphorylate tyrosine residues leading to association of signalling molecules and cascade 3. TK Associated Receptors: associate with proteins having TK activity 4. Receptor Tyrosine Phosphates: Removes phosphate on tyrosine residues 5. Receptor Serine/Threonine Kinases: phosphorylate specific Serine/Threonine residues on IC s...

Signal Transduction - The process of converting signals from one form to another. In cells: Extracellular signaling molecule --> receptor --> intracellular signaling molecules --> effector proteins Extracellular Signaling Molecules - this type of signaling molecule comes from outside of the cell, and can come in many different forms Receptor - this is a generic term for what binds a ligand Intracellular signaling molecule - as a result of a receptor being bound, this is released in...

CPPS 325 FINAL EXAM graded A+ 2023 verifiedWhat are the 5 well-known enzyme-linked cell surface receptors? - correct answer 1. Receptor Guanylyl Cyclase: produces cGMP 2. RTK: phosphorylate tyrosine residues leading to association of signalling molecules and cascade 3. TK Associated Receptors: associate with proteins having TK activity 4. Receptor Tyrosine Phosphates: Removes phosphate on tyrosine residues 5. Receptor Serine/Threonine Kinases: phosphorylate specific Serine/Threonine residu...

PNB 3255 Exam I Questions and Answers Already Passed Nervous system is ___% of human body weight 3% or ~4.5 lbs The CNS includes: Brain, spinal cord, and retina The PNS includes: Neurons outside the CNS, cranial / spinal nerves, ganglia Autonomic nervous system controls: Visceral functions such as heart rate, digestion, salivation, respiration CNS development begins at what day of intrauterine development? Day 22 Describe the process of CNS formation. The nervous system develops from the ne...

What are the different biochemical molecules of life? correct answer: - proteins = antibodies, receptors, transorters, hormones enzymes - lipids = fats, cholesterol, hormones - sugars = energy, cell structure - nucleic acids = DNA, RNA - small molecules= vitamines, metabolites - ions = K+, Na+, Ca2+, Cl- - water What are the 2 different types of hormones? correct answer: - protein/ lipid derivative What determines the function of a molecules correct answer: structure What cause...

BIOL 1P91 – Final EXAM .OVER 280 QUESTIONS WITH VERIFIED CORRECT ANSWERS Holds the cell together and controls what goes in and out - ANSWER cell membrane separates cell contents from the surrounding environment - ANSWER plasma membrane uptake and export of ions and molecules, cell compartmentalization, protein storing, anchoring cytoskeleton, production of ATP and NADPH, cell signalling, cell and nuclear division, and adhesion of cells to each other and to the extracellular...

CPPS 325 FINAL EXAM QUESTIONS WITH CORRECT ANSWERS 2023/2024 Graded A+. What is the only example of conformational change activation? - Correct Answer-Insulin receptor kinase. All other RTKs are activated through forms of dimerization. What are the two forms of dimerization? - Correct Answer-i) Receptors exist as unactivated dimers until ligand binds (Twist theory) ii) exist as monomers that are brought together and activated by ligand binding. What is the most common method of dimerizatio...

How does membrane formation occur? correct answer: decrease in ionic bond with water What are the main functions of the cell membrane? correct answer: - barrier regulating the import and export of essential molecules - Compartmentalization of specialized processes increases cellular efficiency. - modulates cell-cell recognition due to the presence of glycoproteins and glycolipids. - Signalling across the membrane is mediated by proteins and lipids. What is the fluid mosaic model? corr...

BIOL 1P91 – Final EXAM .OVER 280 QUESTIONS WITH VERIFIED CORRECT ANSWERS Holds the cell together and controls what goes in and out - ANSWER cell membrane separates cell contents from the surrounding environment - ANSWER plasma membrane uptake and export of ions and molecules, cell compartmentalization, protein storing, anchoring cytoskeleton, production of ATP and NADPH, cell signalling, cell and nuclear division, and adhesion of cells to each other and to the extracellular...