Chemical Reactions And Enzymes Flashcards
Chemical reactions that happen spontaneously, or on their own _____ energy.
Release
Chemical reactions in our bodies help us grow, reproduce, and _____.
Move
What is activation energy?
Energy that is needed to start a chemical reaction
What is a catalyst?
An enzyme that lowers activation energy
Chemical reaction that absorbs energy _____ a source of energy.
Needs
How does a catalyst speed up a chemical reaction?
Lowers activation energy
What is an enzyme?
A protein that speeds up a chemical reaction
The substrate bonds to a site on the enzyme called ____ ____
Activation site
Name one variable that can effect an enzyme:
Temperature
What is transpiration?
Water evaporates through leaves, stems, and or flowers
What is specific heat?
The amount of energy needed to raise or lower the temperature by 1°c
Why is sand hot and the water cool at the beach?
Higher specific heat
pH is a measure of the concentration of a ______________ in a solution
Hydrogen-ion
The more ___ ions the more basic
OH
Enzymes are complex molecules that are made of amino acids and belong to what group?
Proteins
What macromolecule group are part of animal tissue for insulation?
Lipids
The three parts of a nucleotide are?
5 carbon sugar, nitrogen base, and phosphate
What is cellulose and where is it used?
It is sugar and gives support to cell wall
Four turtles are given a green slime everyday for two weeks to see if a mutation occurs what is the dependent variable?
Mutation
What is ethylene?
Pheromone given off by fruit to ripen
A scientific statement found in nature?
Law
A tendency of an organism to keep stable?
Homeostasis
3 examples evaporative cooling?
Sweating, transporting, boiling water
What is the pH needed for living organisms?
Seven
