Nak pump Study guides, Class notes & Summaries

What are sphingomyelins? - Sphingolipids where the head group is phosphocholine or phosphoethanolamine. What prevents cells from actually swelling? - It is effectively impossible for sodium to enter the cell (due to pump and lack of sodium channels). There is a high sodium ion concentration outside the cell which prevents water from entering in the cell Why would cells have a tendency to swell? - Because cytoplasm contains negatively charged proteins that cannot exit, so cells naturally ga...

Kin 1A03 McMaster Final Exam Review (2023/2024) 100% Pass excitation-contraction coupling AP from NS turns into muscle contraction -MAP propagated along sarcolemma into t-tubules -Ca+ channels in SR open and release into sarcoplasm -Ca+ binds to troponin and tropomyosin detaches -X bridge forms myofibril entire muscles length - series of sarcomeres state of each of the bands when muscle is relaxed vs contracted A band (all of myosin) H zone - only myosin I band - only actin A band doesn't ch...

Which of the following interactions are generally considered to be unfavorable? - Interaction between Arg and Lys side chains at a pH of 7, assuming standard pKa values for Arg and Lys Proteins can be denatured by a) Changing temperature b) Adding urea to solution c) Changing solvent d) all choices are correct - All choices are correct If PAGE is carried out after subjecting the sample to SDS and beta-mercaptoethanol, then proteins will be separated on the basis of - Mass Which is the most...

NSG 531 Rush Advanced Pharmacology: Exam 3 Questions With Correct Answers Latest Updated 2024/2025 / Graded A+. what is the difference between cardiac myocyte action potential and that of the CNS or ANS? - ANSWER nerve cell action potential is very short cardiac action potential is much longer they are longer to have adequate filling time in order to get a good contraction for a reasonable bolus of blood the only way this can happen is if the action potential is longer this will also mean ...

Biological foundations of mental health (chapters 3-5)

What is meant by the term "resting membrane potential"? How is it maintained? Resting membrane potential is when the equilibrium potential of a Na+/K+ pump is between -65 and -85. (-90mV for K+, +60mV for Na+) It is maintained by the Na+/K+ pump but is generated by the unequal distribution of ions. Resting membrane potential is close to the equilibrium potential of which ion (EK+ or ENa+)? It is much closer to the K+ equilibrium (-90mV) because the membrane is more permeable to K+ What is t...

PCB 3023 : Cell Biology Final Review Practice Questions and Answers If PAGE is carried out after subjecting the sample to SDS and beta- mercaptoethanol, then proteins will be separated on the basis of - Answer️️ -Mass Which is the most abundant molecule in a bacterial cell? - Answer️️ -Water Which of the following is true about the molecular properties of water? A) Water has a dipole moment. B) Water can form hydrogen bonds with other water molecules. C) Water can form hydrogen ...

Anatomy | Anatomy Final Study Guide Levels of organization (simple to complex) chemical/molecular, cellular, tissue, organ, organ system, organism Functions of bone marrow to produce RBC in adults (skeletal system), has megakaryocytes that produce platelets, and lymphocytes Anatomical position body is standing upright, facing forward, with the arms at the sides and palms of hands facing forward (anterior) Supine position lying on back, facing upward Prone position lying face down Anatomical Pla...

Summarised notes on transport through cell membrane, exploring osmosis, facilitated diffusion etc. Notes on TOPIC 2 of AQA Biology- and the transport through cell membrane chapter. These notes got me an A*.

This study guide delves into the intricate structure and functionality of neurons, highlighting their distinctive morphology and polarity, which are crucial for transmitting and processing electrical signals. The document explains key components such as the cell body, dendrites, axon, and axon terminals and elaborates on the different zones of neuronal polarity. It covers the knee-jerk reflex circuit, ion concentrations, the roles of the Na/K pump and leakage channels, the Nernst equation, actio...