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Biology Test 1

Chemical reactions and enzymes

What do enzymes speed up? Chemical reactions.
What do enzymes lower? Activation energy.
Which type of chemical reaction results in a release of energy? Exergonic- energy exits
What is a chemical reaction? The making or breaking of chemical bonds.
Why do chemical reactions occur? Collisions between molecules.
What happens to the rate of a reaction when you have a higher concentration of molecules together? The reaction will be faster because you have more collisions.
How does pH affect enzyme activity? The optimum ph is where the enzyme works the best, as we move away your enzyme slows down,
How does temperature affect enzyme activity? Increased temperature speeds up the reaction, decreased temperature slows down the reaction.
What is it called when the enzyme has stopped working and the enzyme activity graph goes straight down? Denaturation
What physically happens to the enzyme when it has been denatured? The enzyme experiences a change in shape, so it cannot fit with its substrate, and there is no chemical reaction.
What happens when an enzyme has a shape change? No chemical reaction!
What is the monomer of a protein? Amino acids
What is the monomer of a carbohydrate? Glucose
What is the monomer of a lipid? NONE!
What happens to to an enzyme when its shape has been changed by either hot temperatures or pH changes? Denaturation
The smaller units that join together to make a polymer. Monomer
Type of carbohydrate animals use for quick energy. Glycogen
Monomer of nucleic acid nucleotide
Type of carbohydrate plants use to store energy, it gives us quick a quick source of energy. starch
When this is added to an enzyme it will denature heat
Type of chemical reaction that releases energy Exergonic
Energy required to start a chemical reaction activation energy
Macromolecule responsible for long term energy storage, insulation, and repelling water lipid
The specific location on an enzyme that the substrate binds to Active site
Large molecules composed of many smaller molecules bonded together. Macromolecules
Monomer of a protein Aminoacid
Formed when an enzyme fits it substrate enzyme substrate complex
The process of making or breaking chemical bonds that link atoms Chemical reaction
The monomer of carbohydrates Glucose
Extreme levels of this can denature enzymes pH
Molecule that speeds up chemical reactions Enzyme
A molecule made up of repeated parts called monomers polymers
Macromolecule that store genetic information nucleicacid
The substance that an enzyme works on Substrate
Macromolecule that provides usable energy to living things in the form of of sugars and starches carbohydrates
Type of chemical reaction that requires energy Endergonic
Type of carbohydrate used for plant structure. cellulose
Created by: noack.stride