A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
What is a gradient in anatomy?
1 : change in the value of a quantity (as temperature, pressure, or concentration) with change in a given variable and especially per unit on a linear scale. 2 : a graded difference in physiological activity along an axis (as of the body or an embryonic field)
What is diffusion in biology?
Diffusion is defined as the movement of individual molecules of a substance through a semipermeable barrier from an area of higher concentration to an area of lower concentration . From: Handbook of Biopolymers and Biodegradable Plastics, 2013.
What is a concentration gradient in a cell?
Concentration gradient refers to the change that occurs when molecules diffuse across the membrane. Basically, the concentration of two molecules differs from both sides of the membrane. The cell is often trying to reach the concentration gradient to an equilibrium state.
Is gradient another word for slope?
In this page you can discover 31 synonyms, antonyms, idiomatic expressions, and related words for gradient, like: angle, slope, list, pitch, grade, inclination, rake, slant, tilt, tip and rise.
What is diffusion gradient biology?
A diffusion gradient is a gradient in the rates of diffusion of multiple groups of molecules through a medium or substrate. The groups of molecules may constitute multiple substances, portions of the same substance that have different temperatures, or other differentiable groupings.
What is pressure gradient biology?
The difference in hydrostatic pressure on either side of a membrane. As the difference in pressures rises, filtration increases from the area of high pressure to the area of low pressure. See also: gradient.
What is proton gradient Biology?
Proton gradient. in biology, the proton gradient may be used as an intermediate energy source for heat and flagellar rotation. It results from the higher concentration of protons outside the inner membrane of the mitochondria than inside the membrane, and becomes the driving force behind atp synthesis/hydrolysis.
What is a concentration gradient quizlet?
concentration gradient. the process of particles moving through a solution from an area of higher number of particles to an area of lower number of particles. The areas are typically separated by a membrane.
What are the 3 types of diffusion?
- (i) Simple diffusion is when ions or molecules diffuse from an area of high concentration to an area of low concentration.
- (ii) In osmosis, the particles moving are water molecules.
What are the 4 different types of diffusion?
- Contagious Diffusion.
- Hierarchical Diffusion.
- Stimulus Diffusion.
What are the 3 types of osmosis?
What are the three types of osmotic conditions that affect living cells? The three types of osmotic conditions include- hypertonic, isotonic, and hypotonic.
Is concentration gradient the same as diffusion?
Diffusion is the net movement of molecules from an area where they are at a higher concentration to areas where they are at a lower concentration. This is due to the random movement of the molecules. The difference in the concentration of a substance between two areas is called the concentration gradient .
What is a gradient vector?
The gradient is a fancy word for derivative, or the rate of change of a function. It’s a vector (a direction to move) that. Points in the direction of greatest increase of a function (intuition on why) Is zero at a local maximum or local minimum (because there is no single direction of increase)
What is osmotic gradient?
The osmotic gradient is the difference in concentration between two solutions on either side of a semipermeable membrane, and is used to tell the difference in percentages of the concentration of a specific particle dissolved in a solution.
What is the synonym of gradient?
Synonyms. slope. a mountain slope. hill. the shady street that led up the hill to the office building.
What does slope gradient mean?
Gradient is a measure of how steep a slope is. The greater the gradient the steeper a slope is. The smaller the gradient the shallower a slope is.
What is diffusion in simple words?
1 : the act of spreading or allowing to spread freely. 2 : the mixing of particles of liquids or gases so that they move from a region of high concentration to one of lower concentration. diffusion. noun.
What does osmosis mean in biology?
Here’s the definition of osmosis that you will see in most textbooks: In biology, osmosis is the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell’s partially permeable membrane.
Is osmosis and diffusion the same?
In diffusion, particles move from an area of higher concentration to one of lower concentration until equilibrium is reached. In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.
What is heart gradient?
According Cardiovascular Physiology, stenosis of the aortic valve leads to a pressure gradient across the valve during the time in which blood flows through the valve opening. This aortic valve gradient is expressed as an increase and decrease on each side of the defective valve.
What is called pressure gradient?
Pressure gradient force, is the force produced by differences in barometric pressure between two regions and is responsible for the flow of air from a region of high pressure to a region of low pressure.
What is diffusion in biology grade 11?
Diffusion. The movement of molecules from regions of higher concentration to regions of lower concentration is called diffusion. Movement by diffusion is passive. Diffusion rates are affected by the gradient of concentration, the permeability of the membrane separating them, temperature, and pressure.
What is electron gradient?
In the electron transport chain, electrons are passed from one molecule to another, and energy released in these electron transfers is used to form an electrochemical gradient. In chemiosmosis, the energy stored in the gradient is used to make ATP.
What creates a proton gradient?
A proton gradient is formed by two quinol (4H+4e−) oxidations at the Qo site to form one quinol (2H+2e−) at the Qi site (in total six protons are translocated: two protons reduce quinone to quinol and four protons are released from two ubiquinol molecules).