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Biochemistry
Biochemistry flashcards based on key terms list and unit outline
82
Biology
12th Grade
12/12/2014

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Term
Molecule
Definition
A group of atoms bonded together
Term
Intramolecular bond
Definition
The bonds between atoms in a single molecule
Term
Intermolecular bond
Definition
The bonds between different molecules
Term
Hydrogen bond
Definition
The strongest of the intermolecular bonds
Term
Hydrophobic
Definition
Repels water
Term
Hydrophilic
Definition
Doesn't repel water
Term
Ion
Definition
Charged atom
Term
Functional groups
Definition
Parts of molecules. They have negative or positive regions. Ex: Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate
Term
Macromolecule
Definition
Large organic molecules. Also called polymers. The four main types are: Carbs, Lipids, Proteins, Nucleic acids.
Term
Polymer
Definition
A larger molecule made of many monomers Ex: In 'Sugar + Sugar = starch' starch is the polymer
Term
Monomer
Definition
A single unit of a larger molecule
Ex: In 'Sugar + Sugar = starch' sugar is the monomer
Term
Carbohydrate
Definition
A sugar molecule.
Term
Monosaccahride
Definition
Term
Isomer
Definition
Term
Dissacharide
Definition
Two ------- rings attached together with a (glycosidic) bond
Term
Polysaccharide
Definition
Three or more ------- rings attached together with a (glycosidic) bond. Either alpha or beta
Term
Lipid
Definition
Fats and oils.
Term
Triglyceride
Definition
Term
Fatty acid
Definition
Term
Phospholipid
Definition
Term
Phospholipid bilayer
Definition
Maked up the cell membrane, and most organelles.
Term
Steroid
Definition
Term
Protein
Definition
Term
Amino acid
Definition
There are 20 in total, 10 that cannot be made by the human body (14 for infants)
Term
Polypeptide
Definition
A chain of amino acids joined by a peptide bond
Term
Nucleic acid
Definition
Term
DNA
Definition
Deoxyribonucleic acid. Contains info for production of RNA
Term
RNA
Definition
Ribonucleic acid. Provides information on protein production to the cell.
Term
Nucleotide
Definition
Term
Acid
Definition
Term
Base
Definition
Term
pH scale
Definition
Term
Neutralization reaction
Definition
Term
Buffer
Definition
Term
Oxidation
Definition
Term
Reduction
Definition
Term
Redox reaction
Definition
L(osing)E(lectron)O(xidation) goes G(aining)E R(eduction)
Term
Condensation reaction
Definition
Term
Hydolysis reaction
Definition
Term
Activation energy
Definition
The amount of energy needed to complete the reaction.
Term
Catalyst
Definition
A substance that increases the speed of a reaction without being used up at the end of the reaction
Term
Enzyme
Definition
A protein that speeds up reactions in the human body
Term
Active site
Definition
Term
Substrate
Definition
Term
Enzyme-substrate complex
Definition
Term
Inhibitor (competitive & non-competitive)
Definition
Term
Allosteric site
Definition
The site where the non-competitive inhibitor binds. Cannot be used if a substrate is already in the active site
Term
Activator
Definition
Term
Nucleolus
Definition
Term
Nuclear envelope
Definition
Term
Nuclear pore complex
Definition
Control passage of macro molecules. Group of proteins forming openings in the nuclear envelope.
Term
Smooth ER and Rough ER
Definition
Smooth:
Rough: Outer face covered in ribosomes.
Both: Folding of protein molecules and transport of synthesized proteins to golgi apparatus with vesicles.
Term
Ribosome
Definition
Primary site for protein synthesis. Links amino acids together based on instructions from RNA.
Term
Endomembrane system
Definition
Term
Vesicle
Definition
Small sac, membrane enclosed (phospholipid bilayer). Used for transport and storage within the cell.
Term
Golgi apparatus
Definition
Package proteins inside the cell. Stack of curved membrane sacs (phospholipid bilayer)
Term
Lysosome
Definition
Vesicle containing enzymes. Catalyze hydrolysis reactions.
Term
Perixisome
Definition
Form by budding of of the ER. Break down biological molecules, and some toxic ones.
Term
Vacuole
Definition
One big vesicle.
Term
Chloroplast
Definition
Contains chlorophyll. Converts CO2 + H20 into energy rich organic (molecule) through redox reactions.
Term
Mitochondrion
Definition
Makes sugar usable by the cell. Breaks down high energy molecules to convert stored energy to usable energy.
Term
Cell wall
Definition
Gives shape, structural support. Only in plants, algae, fungus, bacteria and some archaea.
Term
Cytoskeleton
Definition
Term
Fluid mosaic model
Definition
Term
Semi-permeable
Definition
Term
Passive transport
Definition
Term
Concentration gradient
Definition
Term
Diffusion
Definition
Term
Osmosis
Definition
Term
Facilitated diffusion
Definition
Term
Channel protein
Definition
Term
Carrier protein
Definition
Term
Active transport
Definition
Term
Endocytosis
Definition
Term
Exocytosis
Definition
Term
Phagocytosis
Definition
Term
Pinocytosis
Definition
Term
Receptor-mediated endocytosis
Definition
Term
Biochemistry
Definition
Study of properties and interactions of biologically important molecules
Term
Covalent Bonds
Definition
Formed by sharing a pair of valence electrons between 2 non-metal atoms
Term
Ionic Bonds
Definition
Formed between a metal and a non-metal. Transfer of an electron from atom to atom
Term
Polar Covalent bonds
Definition
Formed when a pair of valence electrons is unequally shared between 2 atoms
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