Cell membrane - Samenvattingen en Aantekeningen

Biology book Cambridge A & AS levels chapter 4 Cell membranes and transport.

This document provides an outline of the topics and associated weighting that may be covered on the CCMA Certification Exam. A one-page summary of the plan is also available. Within a given topic area, task and/or knowledge statements will be provided. Knowledge statements reflect information that a candidate will need to know, while task statements reflect duties that a candidate will need to know how to properly perform. Items on the exam may require recall and critical thinking pertaining ...

A) phospholipids 11) glycolipids C) cholesterol D) phytostero E) cerebrosides S2) Localized regions of plasma membranes that contain cholesterol and proteins involved n cell signaling are known as A) gap junctions B) arterial plaques C) cadherin junctions D) lipid rafs. E) plasmodesmata. 53) Most cells have a negative plasma membrane potential (Vm) because they have A) equal concentrations of ions on both sides of the membrane an excess of negatively charged solute molecules inside the cell...

Briefly describe the different mechanisms (simple diffusion, facilitated diffusion, active transport) by which solutes can cross the membrane. Provide examples of specific substances that cross the membrane by each of the methods. Define osmosis and how this process affects cells that are placed in hypertonic, isotonic and 1. 2. ypotonic solutions. Solution 1. Simple diffusion is the process which the solutes are moved along a concentration gradient in a solution or a senipermeable e...

Briefly describe the different mechanisms (simple diffusion, facilitated diffusion, active transport) by which solutes can cross the membrane. Provide examples of specific substances that cross the membrane by each of the methods. Define osmosis and how this process affects cells that are placed in hypertonic, isotonic and 1. 2. ypotonic solutions. Solution 1. Simple diffusion is the process which the solutes are moved along a concentration gradient in a solution or a senipermeable e...

7. Using the illustration shown below, describe the process of drug molecule transport fron gastrointestinal tract into the bloodstream by carrier-mediate mechanism (1 point) Intestinal epitheoial cel GI L umen Blood Drug Carrier complex Solution Larger, usually polar molecules cannot pass through the hydrophobic cell membrane. So they need carrier molecules to be transported across the membrane. In this case, the drugs that is taken orally, may be large polar molecule so that it can...

18. Bacterial endotoxin LPS is found in: (a) the outer membrane (b) the periplasmic space (c) the enzymes (e) the muramic acid (d) the peptidoglycan 19. All Spirochaetes possess (a) flagellaa (b) axial filaments 20. When both ends of a cell has one flagellum, this is called (a) monotrichous (b) lophotrichous (e) amphitrichous(d) peritrichous 21. Which are readily and easily removed from a bacterial cell: (a) endospores (b) slime layers (e) axial filament (d) mesosomes (e) capsules 22. Gram ...

18. Bacterial endotoxin LPS is found in: (a) the outer membrane (b) the periplasmic space (c) the enzymes (e) the muramic acid (d) the peptidoglycan 19. All Spirochaetes possess (a) flagellaa (b) axial filaments 20. When both ends of a cell has one flagellum, this is called (a) monotrichous (b) lophotrichous (e) amphitrichous(d) peritrichous 21. Which are readily and easily removed from a bacterial cell: (a) endospores (b) slime layers (e) axial filament (d) mesosomes (e) capsules 22. Gram ...

estion 6 If you contracd infuenza from a stranger on the subway, what would be the first thing to make contact with the cells of your respiratory system? O cell surface proteins and membrane material from cells of that stranger's respiratory tissues O viral capsid proteins o viral glycoprotein receptors O cell surface membranes and proteins from your own respiratory issues as the virus makes its way into your cells O viral nucleic acids injected into your cells Solution 6. Viral g...

5. A cell biologist has developed a new drug that will block the cis face (find out what this means!) of the Golgi apparatus. If eventually approved by the FDA, she wantsto use this new drug to aid cancer patients. What specifically will this drug prevent from happening inside a cancer cell? 6. The pH of black coffee is about 5. The hydrogen ion concentration of beer is about one hundred times greater than that of coffee. What is the pH of beer? Solution The proteins and other compon...