Resting potential is created by a transport protein called the sodium-potassium pump. Resting potential occurs when ions are distributed unequally on the inside and outside of cells‚ and when cell membranes are selectively permeable to different ions. K+ is particularly important for the resting potential. The membrane is highly permeable to K+. In addition‚ the inside of the cell has a high concentration of K+ and the outside of the cell has a low concentration of K+. K+ will naturally diffuse
Premium
cell are equal. Tonicity‚ which is the ability of a solution to gain or lose water due to osmosis‚ results in an environment that is isotonic‚ hypertonic‚ or hypotonic. A hypotonic solution has a lower solute concentration than the cell so water moves into the cell causing the cell to swell. A hypertonic solution has a higher solute concentration than the cell so water moves out of the cell and into the solution causing the cell to shrink. In an isotonic solution‚ concentration of solutes is equal inside
Premium Osmosis Concentration
Critical Analysis: Soliloquies in Macbeth A soliloquy is a monologue‚ delivered by a character alone on stage. o Soliloquies are central to the play because in them there is only truth. There is no deception as there might be when speaking to other characters. o o Soliloquies contain the most powerful emotion and imagery in the play. Soliloquies are extremely important in revealing character‚ and are only spoken by the most important characters in the play There are several soliloquies in the first
Premium Fiction Drama Style
Investigating the Water Potential of a Potato. I have been asked to investigate the water potential of a potato. During my investigation I will not actually be able to measure a value for‚ as it is a pressure value (kPa). Osmosis is a special form of diffusion involving only water molecules. It is defined as "The passage of water from a region of high water potential to a region of low water potential through a partially permeable membrane" Definition of Water Potential. The potential for water to move
Premium Osmosis Cell wall Cell
autorhythmicity 2. Phase 2 of the cardiac action potential‚ when the calcium channels remain open and potassium channels are closed‚ is called the You correctly answered: a. plateau phase. 3. Which of the following is true of the cardiac action potential? You correctly answered: b. The cardiac action potential is longer than the skeletal muscle action potential. 4. The main anatomical difference between the frog heart and the human heart is that the frog heart has You correctly answered: c. a single‚ fused
Premium Cardiac muscle Heart Muscle
Market Potential Indicator Purpose of Indicator As the name states‚ it is a measure of the market potential of a country using several dimensions‚ ratings‚ indexes and percentages. Currently‚ emerging economies comprise more than half of the world’s population‚ account for a large share of world output and have very high growth rates‚ which mean an enormous market potential. With global marketing becoming more important‚ companies and marketers are attempting to determine which international
Premium Investment Economic growth Macroeconomics
2012 MacBeth 5 Paragraph Essay A Tragic Tale of Ambition A Play By: William Shakespeare ENG-3UR As Shakespeare ’s tale of tragic ambition Macbeth progresses‚ Lady Macbeth undergoes a metamorphosis moving from a stable‚ loving wife‚ into a power hungry woman driven to madness by her own obsession for complete control. Although when the question who is ultimately responsible for Duncan ’s death is asked‚ many will point the finger at Lady Macbeth. While she played a role in manipulating
Premium Macbeth
The play Macbeth by William Shakespeare tells the tragic tale of a nobleman and his wife’s descent into darkness as they conspire to take the throne of Scotland. The character of Macbeth possesses qualities that make him admirable‚ but these qualities are also the cause of his downfall. Throughout the play‚ Macbeth exhibits bravery‚ morality‚ and ambition—traits which appear heroic‚ but ultimately lead to his end. To begin with‚ Macbeth is a very brave man‚ but as the play progresses his bravery
Premium Macbeth
685N and your belongings have a weight of 915N. How much work does the elevator do in lifting you and your belongings 5 stories (15.2m)? Solution: W= (685N+915N) (15.2m) W= (1600N) (15.2m) W= 24‚320Nm or J Section 2 Gravitational Potential Energy: 6. A 0.15kg ball is thrown 9.0m straight up. What is the work done by the gravitational force? And what is the change in PE? (Notice anything?) Solution: PE= m*a*h PE= (0.15kg) (9.8 m/s^2) (9.0) PE= 13.23 kg m^2/s^2 or J - The
Premium Potential energy Energy
Resting membrane potentials Definition: Large nerve fibers when not transmitting nerve signals is about 90 millivolt. That is‚ the potential inside the fiber is 90 millivolts more negative than the potential in the extracellular fluid on the outside of the fiber. The Na+-k+ pump also causes large concentration gradients for sodium and potassium across the resting nerve membrane. These gradients are the following: Sodium ( outside): 142 mEq/L Sodium ( inside): 14 mEq/L Potassium ( outside):
Premium Potassium Muscle Action potential