How does the gas exchange in bacteria work?

Answer 1

Bacteria are tiny, one-celled organisms that can be found almost everywhere, in the deepest oceans, in the thickest soil, and up to 90,000 feet in the atmosphere. There are many kinds of bacteria, some which cause deadly diseases and some which are helpful to man.

Those which are harmful cause diseases in man, animals, and plants. They can cause food to spoil, even poisoning people who eat them.

But there are a great many bacteria that man and nature use in helpful ways. For example, bacteria play an important role in making buttermilk, sauerkraut, cheese, and vinegar by causing a chemical change called fermentation. Bacteria also attack dead plants and animals, and break them down into nourishment for the soil.

Bacteria are even used to purify water in sewer treatment plants!

Answer 2

There are about 168 million alveoli in your lungs. They are lined by single layer of flat cells. They are in contact with the blood capillaries. Blood capillaries also have single layer of flat cells. Through these very thin walls, the gaseous exchange takes place, very easily. The surface area of the lungs is about 1100 square feet or 100 square meters. The gases are exchanged in fraction of second. The oxygen goes in the blood from the alveoli and carbon bi oxide comes out of blood to alveloi. This happens by concentration gradient. You may like to think that all the amount of gases is transported like this. But it is not true. You can give up to fifty percent of gases only, by this mechanism. But that is enough. The oxygen is transported with the help of unique molecule called as hemoglobin. Hemoglobin is present in your red blood cells.The carbon bi oxide is highly soluble in water and is transported in dissolved state, in your plasma.

Answer 3

through diffusin