Cholecystitis is a condition caused by inflammation of the gallbladder. The gallbladder collects and stores bile from the liver, and releases it when you eat. It is needed because the liver produce bile constantly. When the gallbladder becomes inflamed, it causes right upper abdominal pain with nausea, vomiting, and fever. Changing diet patterns is important part of the treatment since the gallbladder’s function is reliant on food. You have to lose weight and have to do it slowly, so you have to reduce calorie intake (just eat less). Another important thing is reducing fat and increasing intake of fiber, so the gallbladder does not have to work hard secreting bile to digest fats in food, which reduces inflammation.
Fuel cells can make an electricity from a simple electrochemical
reaction in which oxygen and hydrogen combine to form water. There are several
different types of fuel cell but they are all based around a central design
which consists of two electrodes, a negative anode and a positive cathode.
These are separated by a solid or liquid electrolyte that carries electrically
charged particles between the two electrodes. A catalyst, such as platinum, is
often used to speed up the reactions at the electrodes. Fuel cells are
classified according to the nature of the electrolyte. Every type needs
particular materials and fuels and is suitable for any applications. The
article below uses the proton exchange membrane fuel cell to illustrate the
science and technology behind the fuel cell concept but the characteristics and
applications of the other main designs are also discussed. Proton Exchange Membrane Fuel Cells (PEMFC)
The hydrogen ions permeate across the electrolyte to the
cathode, while the electrons flow through an external circuit and provide
power. Oxygen, in the form of air, is supplied to the cathode and this combines
with the electrons and the hydrogen ions to produce water. These reactions at
the electrodes are as follows:
Anode: 2H24H+ + 4e-
Cathode: O2 + 4H+ + 4e- 2H2O
Overall: 2H2 + O22H2O + energy
PEM cells operate at a temperature of around 80°C. At this
low temperature the electrochemical reactions would normally occur very slowly
so they are catalysed by a thin layer of platinum on each electrode.
Answer:
Amoeba;
Explanation:
Amoeba:
Amoeba will contain nucleus (contain the genetic information). Nucleus normally appears as dense circular mass under microscope.
Organelles are present. Organelles appears like distinct masses that are rounded in shape and smaller than nucleus.
Plasma membrane is present.
Bacteria;
Nucleus will be absent in bacteria. The nucleoid normally appear lighter in color under microscope.
Ribosomes will be present. Ribosomes appears like black dots within the cytoplasm.
No plasma membrane will be present.
Answer:
The SimCell will expand due to net movement of alcohol into the cell
Explanation:
Since the SimCell is only permeable to alcohol and not water, only alcohol can move in and out of the cell. Hence, if a SimCell that contains 20% alcohol and 0% water is placed in a solution containing 40% alcohol and 60% water, there would be a net movement of alcohol from the surrounding solution into the SimCell till equilibrium concentration of alcohol is established between the SimCell and the surrounding solution.
<em>Therefore, the SimCell will expand due to the net movement of alcohol into the cell.</em>