Cellular Respiration VS Photosynthesis What is CELLULAR RESPIRATION

Cellular Respiration VS Photosynthesis

What is CELLULAR RESPIRATION? Cellular Respiration is the most efficient way for the cells in our bodies to harvest energy stored in glucose (food). It is a catabolic pathway for the production of adenosine triphosphate aka: ATP Remember that ATP is a high energy molecule that is used by all of the working cells in our body.

This is how ATP looks like. . . …Not a pretty site

Where does this so called cellular respiration take place? Well, cellular respiration takes place in an organelle in the cell called the Mitochondria.

The actual process of Cellular Respiration… There are three main stages: Glycolysis, the Citric Acid Cycle, and Electron Transport. Glycolysis literally means “Splitting Sugars”. Each glucose molecule is split in half, then 2 ATP molecules, 2 molecules of pyruvic acid, and 2 molecules of NADH, attach to each half of the glucose. This occurs in the presence of oxygen.

The Citric Acid Cycle AKA: The Krebs Cycle This cycle begins with the two molecules No, not that were produced at the end of crabs cycle. glycolysis. They are converted into a compound called Acetyl Co. A. After a series of intermediate steps, electrons along with two ATP molecules are produced. The electrons are then carried on to the next stage of cell respiration.

Electron Transport Chain : D This requires oxygen directly. The electron transport “chain” is a series of electron carriers and with reactions, the high energy electrons are then passed to oxygen. Ultimately, in the process ATP is formed.

In summary…

Bear with me…. almost done!

Photosynthesis This should be a review for you guys… This is a complex process in which carbon dioxide, water, and some inorganic salts are converted into carbohydrates and oxygen by plants using energy from the sun and chlorophyll.

Where does this phenomenon occur? This takes place on the surface of leaves, in the chloroplast of plant cells. Chloroplast contain chlorophyll which is a green pigment used to absorb the sun’s light.

What happens during Photosynthesis? Sunlight is absorbed by the chlorophyll in the chloroplast, water is absorbed by the roots of the plants, carbon dioxide is also taken in. This light energy is then turned into chemical energy, glucose (food) and oxygen.

How are Cellular Respiration and Photosynthesis linked?

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