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chapter 2HAP

Scientific method 6 steps observe, create question, form hypothesis, test with experiments, analyze results, form conclusions
Control group Used as baseline and should have everything in common with experimental group except for the independent variable
Experimental group Tested on to show the experiments effect, should be the same as the experimental group except for the independent variable.
Independent variable What you change
Dependent variable Out come, what your measuring changes in
What size of sample dive is better? larger
theories Composed of well tested hypothesizes, may change
laws Composed of well tested theories, probably won't change
Kinetic energy motion
Potential Stored energy
Atoms are made of Electrons, protons, and neutrons
4 elements that make up living things Carbon, oxygen, hydrogen, nitrogen
Molecule VS compound Molecule is made of two same atoms, Compound is made of two different atoms.
Compound vs mixture Compound-the atom bond ex: milk-homogenous mixture Mixture- physical mixture ex: oil and vinegar
Colloids / emulsions Don't settle out
suspensions Settle out
synthesis Large molecules are made by combining small ones
Decomposition Large molecules are broken to create smaller ones, energy is usually required
Dehydration synthesis Take out water to from a molecule
hydrolysis Add water to break a bond
Atomic number = number of _____ Protons
Number of neurons = ______ Atomic mass - protons
The number of protons and electrons in an atom are ____ equal
Atoms are polar or nonpolar nonpolar
polar Electrons are shared equally
nonpolar Electrons are not shared equally
Protons and electrons are equal in an ___ atom
In an ionic bond, electrons equal ___ Protons - charge
Ionic bond Electrons are completely lost or gained by atom
Bonds important for 3D structures Nonpolar covalent
Carbohydrate and proteins are build out by their building blocks by ____________________ Removing a water molecule between the pairs
HCO sub3 - Bicarbonate ion found in blood, that acts as buffer which keeps PH levels regulated
Carbohydrates are stored in the liver and muscles as ____? glycogen
Very stable and insoluble in water describes what? Fibrous proteins
The phosphates purpose in a DNA molecule Hold the molecule together
Oils are ... Lipids with a high degree of unsaturation
Salts are ionic compounds true false true
Stress proteins chaperones
Eicosanoids From arachidonic acids. Cause many symptoms that send you to dr office. Ex inflammation
cofactors A coenzyme, which another must unite in order to function
Basic structural material of the body protein
O=O means Atoms are double bonded
Genetic info in encoded in the DNA by a _____ Sequence of nucleotides. (DNA is in the nucleus)
What is an unstable or reactive atom? An atom with less than 8 elements in it valence shell
Most abundant protein in the body collagen
How many carbons and how many hydrogen are in CH sub 4 1 C and 4H
What happens in a redox reaction? Decomposition and electron exchange occur
polypeptide 10+ amino acids
polysaccharide 10 or fewer amino acids
A chain of more than 50 amino acids protein
peptide 2+ amino acids
dipole A polar molecule
`ratio of fatty acids to glycerol in neutral fats 3:1
Created by: nadiak