no
Enzymes are proteins which act as catalysts and allow complex chemical reactions to occur rapidly. Without enzymes, reactions would not occur quickly enough to allow cells to function effectively. For example, people who are lactose intolerant do not produce enough of the enzymes which break down lactose and therefore cannot digest lactose properly.Sources:Biology courseBrain, Marshall. "How Cells Work." HowStuffWorks. HowStuffWorks, Inc., 2002. Web. 26 Mar. 2011. .
The acrosome layer of sperm cells contain enzymes to break down the outer layer of the ovum to allow penetration by the sperm cell.
Cells have enzymes to speed up chemical reactions. If enzymes didn't exist, the chemical reactions inside our bodies would be too slow to allow us to function, and we would die. Enzymes speed up chemical reactions, they digest foods and assimilate nutrients from proteins, carbohydrates, fats, and plant fibers that would not be easily digested without them.
Animals such as cows, horses, sheep, goats, and termites have symbiotic bacteria in the intestinal tract that contain the enzymes that allow them to digest cellulose in the GI tract. No vertebrate (animals with an internal skeleton) can digest cellulose directly; all must use the enzyme to break down cellulose.
Much faster. For example, there are enzymes that help exchange O2 (oxygen molecules) and CO2 (carbon-dioxide molecules). In your body, this happens in an instant, but without enzymes this process would take minutes. So without enzymes you would suffocate.
to break down larger molecules into simpler molecules of food components
Enzymes are proteins which act as catalysts and allow complex chemical reactions to occur rapidly. Without enzymes, reactions would not occur quickly enough to allow cells to function effectively. For example, people who are lactose intolerant do not produce enough of the enzymes which break down lactose and therefore cannot digest lactose properly.Sources:Biology courseBrain, Marshall. "How Cells Work." HowStuffWorks. HowStuffWorks, Inc., 2002. Web. 26 Mar. 2011. .
The acrosome layer of sperm cells contain enzymes to break down the outer layer of the ovum to allow penetration by the sperm cell.
Get up on plane quicker
Cells have enzymes to speed up chemical reactions. If enzymes didn't exist, the chemical reactions inside our bodies would be too slow to allow us to function, and we would die. Enzymes speed up chemical reactions, they digest foods and assimilate nutrients from proteins, carbohydrates, fats, and plant fibers that would not be easily digested without them.
yes
Animals such as cows, horses, sheep, goats, and termites have symbiotic bacteria in the intestinal tract that contain the enzymes that allow them to digest cellulose in the GI tract. No vertebrate (animals with an internal skeleton) can digest cellulose directly; all must use the enzyme to break down cellulose.
The enzymes in plant cells are made from Peroxidase and Laccase. These enzymes are in the cell wall and they are the catalyst to allow a variety of biological processes to take place.
To allow the absorption of nutrients and to secrete enzymes
Humans lack the necessary enzymes to break down and digest the cellulose in grass, which makes up the majority of its structure. Additionally, grass does not contain a high enough concentration of protein to sustain human dietary needs. Animals, on the other hand, have evolved to have the necessary enzymes and digestive systems to break down and extract nutrition from grass. Many herbivorous animals, such as cows and sheep, have complex stomachs that allow them to ferment and extract nutrients from grass.
catabolic molecules
faster