do now wait for assigned seat then…. chemical reactions enzymes
TRANSCRIPT
• Chemical reactions change one set of molecules into a new set of molecules.
• The molecules that you start with in a chemical reaction are called the reactants.
• The molecules that you end • with are called products.
• Chemical reactions change reactants into completely different products.
• In chemical reactions, bonds can be broken and bonds can be formed.
• When something is broken down, it is called digestion.
• When something is built up, it is called synthesis.
Synthesis• A chemical reaction can join many monomers
together to form a polymer.
• A monomer is a single, simple molecule.
• A polymer is large, complex molecule made when many monomers are joined together.
• Through chemical reactions….– glucose can be built into starch– simple sugars can be built into carbohydrates– amino acids can be built into proteins.
• Through chemical reactions…– starch can be digested into glucose– carbohydrates can be digested into simple sugars– proteins can be digested into amino acids.
• There are thousands of chemical reactions that occur in the human body.
• Chemical reactions are needed to break down food, to repair cells, to create energy, to send messages, to fight invaders, to transport materials, and so much more.
• There are thousands of chemical reactions that occur in the human body.
• Chemical reactions are needed to break down food, to repair cells, to create energy, to send messages, to fight invaders, to transport materials, and so much more.
• Your body needs to do over 200 TRILLION chemical reactions PER SECOND for you to stay alive!!!!!!!
• A catalyst is a molecule that speeds up the rate of chemical reactions.
• The catalysts in our body are called enzymes.
• Enzymes are special protein molecules that speed up the rate of chemical reactions in living things.
• Enzymes can catalyze, or speed up, chemical reactions 10 million times faster than they would occur on their own.
• Without enzymes, the chemical reactions in living things would not happen fast enough to sustain life.
• There are MANY different enzymes in the body.
• Every chemical reaction has a specific enzyme helper.
• In other words, each enzyme is designed to work with ONE specific reaction.
For example…
• A SPECIFC enzyme is designed to digest carbohydrates into simple sugars.
• This enzyme is called “amylase”