Question

Define cellular respiration.write two types of respiration.​

Answer 1

Answer:

Explanation:

Cellular respiration

is the sum total of chemical processes that release energy from food substances specifically glucose inside the cells living organism with or without participation of molecular oxygen.

OR

It is the catabolic process in which an organism oxidizes glucose (mainly) to yield energy. Water & C02 as biproducts. C02 is exhaled along with moisture (water) while this energy (present in form of ATP) is used to run all required life processes.

The two types of cellular respiration are

1.Aerobic respiration

2.Anaerobic respiration

Answer 2

Answer:

here you go:-

Explanation:

The first step in both anaerobic and aerobic respiration is called glycolysis. This is the process of taking one glucose (sugar) molecule and breaking it down into pyruvate and energy (2 ATP). We will discuss this in depth during aerobic respiration.

The second step in anaerobic respiration is called fermentation. Fermentation starts with pyruvate (the end product of glycolysis). Depending on the organism, pyruvate can either be fermented into ethanol (a fancy name for alcohol) or lactate (lactic acid). Fermentation releases CO2, but does not make any ATP – all ATP during anaerobic respiration is produced during glycolysis. Since glycolysis produces 2 ATP, anaerobic respiration yields 2 ATP for every molecule of glucose. Both glycolysis and fermentation take place within the cytosol/cytoplasm of a cell. In fact, the entire process of anaerobic respiration takes place in the cytosol.

Fermentation is the process by which we make wine and other types alcohol. Through an anaerobic process, yeast will break down the glucose in the grape juice and convert it into pyruvate. The pyruvate is then fermented into ethanol/alcohol. During anaerobic respiration CO2 is also released, this is why there are bubbles in wine and champagne (the release of CO2 during anaerobic respiration is also how yeast causes bread to rise). Of course, other organisms and bacteria can utilize this method of respiration as well, but yeast is the organism of choice for making wine.

Other cells and organisms will ferment pyruvate into lactate, also known as lactic acid. I’m sure you’ve all been told that your muscles hurt during and after exercise because you have an excess build of lactic acid in your muscles. This is because of anaerobic respiration. During exercise, the oxygen supply to our muscle cells is limited. When oxygen is low, our muscle cells will utilize anaerobic respiration and ferment pyruvate into lactic acid. With rest and time, our body will eliminate the lactic acid and our muscles will no longer be sore. When we aren’t exercising, our muscle cells primarily use aerobic respiration because oxygen is plentiful.