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AnChap4
Cellular Metabolism
18
Anatomy
Undergraduate 3
10/01/2011

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Term
Metabolism
Definition
All chemical reactions occurring in body
Term
Anabolism
Definition
build; require energy; provides materials needed for cell growth and repair
Term
Catabolism
Definition
Break down; release energy; produces proteins, polysaccharides and fats
Term
Enzymes
Definition
lowers activation energy needed to start reactions; specific shape to match substrate at activation site
Term
Metabolic pathways
Definition
series of enzyme-controlled reactions leading to formation for a product
Term
Adenosine Triphosphate (ATP)
Definition
three parts: adenine and ribose molecule; 3 phosphate molecules in a chain
Term
Adenosine Diphosphate (ADP)
Nicotinamide Adenine Dinucleotide (NADH)
Flavine Adenine Dinucleotide (FADH2)
Definition
becomes ATP through phosphorylation
other high energy molecules
Term
Anaerobic Respiration
Definition
NO OXYGEN; glucose to lactic acid; energy released is harnessed as 2 ATP
Term
Aerobic respiration
Definition
more productive; YES OXYGEN; Glucose + O = CO2 + H2O; energy released is harnessed as 36-38 ATP
Term
Glycolisis
Definition
occurs in cytosol; NO OXY; see graph
Term
Citric Acid Cycle and Electron Transport Chain
Definition
Occurs in Mitochondria; REQUIRES OXY; see graph
Term
DNA base pairing
Definition
A-T; A-U when in contact with RNA stage
C-G
DNA wrapped around histones to form chromosomes (chromatin); forms a helix
Term
Transcription
Definition
occurs in nucleus; RNA formed; mRNA, tRNA, rRNA
Term
Messenger RNA (mRNA)
Definition
Delivers genetic info from nucleus to cytoplasm; single polynucleotide chain formed beside strand of DNA; CODON (3 base combo w/ 64 possibilities [20 AA and 3 are STOPs])
Term
Transfer RNA (tRNA)
Definition
AA; anticodon;
TRANSLATION: translates codon of mRNA into an AA
Term
Ribosomal RNA (rRNA)
Definition
Provides structure and enzyme activity for ribosomes
Term
Genetic code
Definition
Specification for correct sequence of AA in a polypeptide chain; each AA has triplet code
Term
Mutations
Definition
change in DNA sequence
REPAIR ENZYMES: correct mutations
INBORN ERRORS: inheriting mutation that alters enzyme
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