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Bushong chapter 29
Question | Answer |
---|---|
Deterministic effect | Occurs within days after exposure. In crease in severity with increasing radiation dose. |
Stochastic effect | not observed for months or years. The incident of radiation response increases with increasing radiation dose. |
85 % of the human body is composed of | hydrogen and oxygen |
5 types of molecules found in the body and 1 macromolecule | proteins, lipids (fats), carbohydrates (suagars/starches), nucleic acid Macromolecule: DNA |
Catabolism | Breaking down into smaller units |
Anabolism | Production of LG molecules from small |
DNA | Command/controls for cell function; contains hereditary info |
protein synthesis | Metabolic production of proteins |
Proteins | Funtion as enzymes, homones and antibodies. Give the body structure and support |
Proteins: generalized formula | CHONT (carbon, hydrogen, oxygen, nitrogen, trace elements) |
Lipids | Glycerol and fatty acids, structural components of cell membranes (thermal insulator under skin), fuel for body |
Lipids: generalized formula | CHO (carbon, hydrogen, oxygen) |
Carbohydrates | AKA: saccharides, monosaccharide's, disaccharides. Chief function is to provide fuel for cell metabolism. |
Carbohydrates: generalized formula | CHO hydrogen atoms to oxgen atoms ratio is 2:1 |
Disaccharides | Sugars C6 H12 D6 |
Polysaccharides | Large and include plant starches and animal glycogen C6 H10 O5 |
Ultimate molecule that fuels the body: | Glucose |
RNA: two types | mRNA (messenger) ; tRNA (transfer) |
What is RNA involved in? | Growth and development |