Due to certain chemical properties of carbon dioxide, it is much more soluble in human blood than oxygen. This tendency of carbon dioxide molecules to dissolve readily in the blood comes in pretty handy while removing them from within the cells in which they’re produced. Alveoli are the sites...
The team came up with a reversible process consisting of membrane-free electrochemical cells. Reactive electrodes are used to release protons to the seawater fed to the cells, driving the release of the dissolved carbon dioxide from the water. The process is cyclic: It first acidifies the water...
The body actually produces formaldehyde naturally, but enzymes in the body break it down — first into formate (formic acid) and then into carbon dioxide. Since most of the formaldehyde that we all inhale is broken down by cells in the mouth, nose, throat and airways, less than a third ...
Their influence, however, can be overridden by chemical factors (oxygen, carbon dioxide, pH). Chemical irritants: Nerve cells in the airways sense the presence of unwanted substances in the airways such as pollen, dust, noxious fumes, water, or cigarette smoke. These cells then signal the ...
What is the main mechanism by which gases move from the alveoli into the blood and cells and back? Do white blood cells transport carbon dioxide? How is the energy produced by respiration stored? How is cholesterol transported into human cells?
Explain the Conversion of Carbon Dioxide into Oxygen. What would happen to the carbon dioxide and oxygen levels if we had too many animals or too many plants? Our lungs breathe in O2, but release CO2 and H2O. What's the function of O2 in cellular respiration? Where do CO2 and O2 come...
A close-up of blood cells Sebastian Kaulitzki/iStockphoto.com Do you ever wonder what makes up blood? Unless you need to have blood drawn, donate it or have to stop its flow after an injury, you probably don't think much about it. But blood is the most commonly tested part of the...
How Do Hydrogen Fuel Cells Work? Hydrogen fuel cells are just one of many alternative energy sources that offer a comprehensive list of benefits. A hydrogen fuel cell is comparable to a battery in that it can produce electricity without relying on combustion or emissions. But unlike batteries, ...
Fuel cells should do both tasks more efficiently. A fuel cell provides a DC (direct current) voltage that can be used to power motors, lights or any number of electrical appliances. There are several different types of fuel cells, each using a different chemistry. Fuel cells are usually ...
Through the process of photosynthesis, trees remove carbon dioxide (a greenhouse gas) and release oxygen into our air. Trees store the carbon dioxide, called carbon sequestration, and -- depending on the size of the tree -- can hold between 35 to 800 pounds of carbon dioxide each year [...