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What are the similarities and differences between facilitated diffusion and simple diffusion?
In simple the membrane is freely permeable to the molecules , so their movement does not require utilisation of energy. In Facilitated diffusion , the membrane is not freely permeable...
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What is the difference between net diffusion and diffusion?
The diffusion is a random process from a region of higher concentration to lower concentration down the concentration gradient Let's say you have a membrane which can allow water movement...
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How does facilitated diffusion differ from simple diffusion?
In facilitated one, ions (for example) diffuse through special channels. Let's consider neuron membrane. There we have mostly potassium and sodium channels through which the ions diffuse. Otherwise it would...
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Is Osmosis a simple diffusion or a facilitated diffusion?
is the movement of solvent particles (mostly water) down a concentration gradient through a partially permeable membrane. It is basically the diffusion of water molecules. This is simple diffusion,...
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What are the differences between diffusion, osmosis, facilitated diffusion & active transport? How are these processes related to transport across cell membranes?
1) : Is the movement of molecules / ions from a region of higher to lower concentration. It may or may not occur across a semi permeable membrane. In...
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What is diffusion? What is facilitated diffusion? What is osmosis?
Diffusion is the tendency of a substance to move from high concentration to low concentration. Consider a that is permeable to glucose. On the right side of the membrane, there...
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What does diffusion, facilitated diffusion, osmosis, exocytosis, endocytosis, pinocytosis and phagocytosis all have in common? What makes them all different from each other?
is used to transport small non polar and non charged particles down concentration gradient. Facilitated diffusion is to transport small polar or small charged particles down concentration gradient,...
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How do we differentiate between a $"molecular element"$, and a $"molecular compound"$? And how are these differentiated from $"non-molecular"$ species?
The distinction between a molecular and non-molecular structure is one of the most important criteria with which to assess . But here, if we have an elemental molecule, we have...
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A carbon compound contains 12.8% of carbon, 2.1% of hydrogen and 85.1% of bromine. The molecular weight of the compound is 187.9. What is the molecular formula of the compound?
(Atomic weight: H = 1.008, C = 12.0, Br = 79.9)
As always with these problems, it is useful to assume $100*g$ of unknown compound....and thus find an empirical formula... $"Moles of carbon"=(12.8*g)/(12.011*g*mol^-1)=1.066*mol.$ $"Moles of hydrogen"=(2.1*g)/(1.00794*g*mol^-1)=2.084*mol.$ $"Moles of bromine"=(85.1*g)/(79.90*g*mol^-1)=1.066*mol.$ And we...
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Hydrogen peroxide has the empirical formula HO and an empirical formula weight of 17.0 amu. If the molecular weight is 34.0 amu, what is the molecular formula?
First, you want to find the ratio between the empirical formula and molecular formula; that is, how much has the molecular formula been simplified to reach the empirical formula. We...
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