Atpase pump - Study guides, Class notes & Summaries

What is tonicity? - Answer-The ability of a solution to cause a cell to shrink or swell. Why does it matter if you are hypotonic or hypertonic? What happens during these conditions? - Answer-If the interstitial fluid has greater solute concentration than that of the cytosol, water from inside the cell flows out causing the cell to crenate and blood pressure to increase. If the interstitial fluid has less solute concentration than that of the cytosol, water flows into the cell and it undergoe...

NU545 Patho Study Guide Unit 1 Exam Questions And Answers What is metabolic absorption? (p.2) - ANS • 1 of 8 cellular functions of eukaryotic cell • Chief function is to take in & use nutrients or other substances from surroundings • Ex: kidney (fluid absorption and synthesize proteins) and Intestinal epithelial cells (fluid absorption/protein enzyme synthesis) What uses oxygen to remove hydrogen atoms in an oxidative reaction? (p.8) - ANS • Peroxisomes contain enzymes that ...

AP Biology Questions and Answers (Graded A) The resting membrane potential depends on which of the following? I. Active transport II. Selective permeability III. Differential distribution of ions across the axonal membrane A. III only B. I and II only C. II and III only D. I, II, and III D The resting potential depends on active transport (the Na+K+-ATPase pump) and the selective permeability of the axon membrane to K+ than to Na+, which leads to a differential distribution of ...

Negative Feedback -Answer- Promotes stability; cancels out the original response. Ex: High FSBS, increased insulin by the pancreas Positive Feedback -Answer- Promotes a change in one direction; instability, DISEASE. Ex: Blood clotting, platelet cascade Proteins -Answer- Provide selectivity to a membrane Integral proteins -Answer- channels, pores, carriers, enzymes, receptors, second messengers Peripheral proteins -Answer- Enzymes, intracellular, signal mediatiors ATP -Answer- Conv...

BRS PHYSIOLOGY- CELL PHYSIOLOGY EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED What are the backbone and tails made of in the phospholipid bilayer? Backbone-Glycerol Tail- Fatty acids What interactions hold integral proteins to the cell membrane? Hydrophobic reactions Not embedded in membrane, not covalently bound peripheral proteins What interactions attach peripheral proteins to cell membranes? electrostatic What type of junctions permit electrical coupling between myo...

NURS 8022 Exam 1 Questions With Correct Answers 100% Negative Feedback - ANSWER Promotes stability; cancels out the original response. Ex: High FSBS, increased insulin by the pancreas Positive Feedback - ANSWER Promotes a change in one direction; instability, DISEASE. Ex: Blood clotting, platelet cascade Proteins - ANSWER Provide selectivity to a membrane Integral proteins - ANSWER channels, pores, carriers, enzymes, receptors, second messengers Peripheral proteins - ANSWER Enzy...

A cell is placed in a solution. Over time the cell begins to shrink. The solution is a. isotonic b. hypertonic c. hypotonic d. isoosmotic - Answerb. hypertonic A cell replicates its DNA/chromosomes during: a. G1 b. S c. G2 d. Mitosis - Answerb. S A compound that can accept a proton (H+) when placed in water is a a. acid b. base c. anti-oxidant d. hydration sphere - Answerb. base A salt can have which of the following? a. H+ b. K+ c. OHd. a and b e. a and c - Answere. a and c ...

Exam 1: NURS611/ NURS 611 (Latest 2023/ 2024) Advanced Pathophysiology Exam | Graded A | Questions and Verified Answers - Maryville QUESTION Why do hyperkaliemia and acidosis often occur together? Answer: In states of acidosis, hydrogen ions shift into the cells in exchange for ICF potassium. QUESTION How is insulin used to treat hyperkalemia? Answer: Insulin transports potassium from the blood to the cell along with glucose. Insulin contributes to the regulation...

primary function of Krebs cycle - ️️to remove hydrogens and the energy associated with those hydrogens from various substrates involved in the cycle P/O ratio - ️️ratio of phosphagen bonds formed to oxygen atoms consumed Process of oxidative phosphorylation - ️️passes electrons from oxidation of a fuel source (CHO, fat, PRO) to NADH or FADH2, and finally to oxygen to produce ATP - slow but high ATP yield ATP - ️️(adenosine triphosphate) main energy source that cells use for...

Why is it so important to keep Ca2+ levels low inside the cell, and how is this accomplished? Ca+ is the most commonly used 2nd messenger. The intracellular conc. Is very low and the extracellular conc. Is several times larger. A rise in Ca leads to receptor activation -> kinases -> and the phos. Of targets. How are levels of Ca2+ increased inside cells? 1. Voltage gated Ca channels on pm. 2. Ligand gated channels like NMDA Rs, on pm. 3. IP3 & RYR receptors on ER, Ca release from ...