What are Enzymes?

What are enzymes?

Biological catalyst, speed up chemical reactions by lowering activation threshold, protein molecules.

What are substrates?

Chemical reactants that bind to active site.

What are active sites?

The area where substrates bind on an enzyme, facilitating the chemical reaction.

Factors affecting enzyme activity

• Temperature

• pH

• Substrate concentration

Anabolic Reactions

Involve building up molecules —> two or more substrates combine to form a product.

Catabolic Reactions

Involve breaking molecules down —> one substrate broken apart to form two or more products.

Photosynthesis

Process in which plants use sunlight to transform to chemical energy.

Word equation:

carbon dioxide + water → glucose + oxygen

Cellular Respiration

The process which cells derive energy (ATP) from glucose.

Word Equation:

glucose + oxygen → carbon dioxide + water + ATP