biology lab week 6 exam

macromolecules

large molecules commonly created by some form of polymerization; made up of smaller building blocks called monomers

what are the 4 types of macromolecules in food

carbohydrates, lipids, proteins, and nucleic acids

metabolism

macromolecules are broken down into individual monomers and used for producing heat, energy, and building new macromolecules

chemical compounds are used

to test the presence of other compounds

indicator solutions

chemical detection tool, observing a chemical change, change in color

positive control

an experiment whose result is already known to be positive, is used to check that nothing went wrong during the procedure, and allows a comparison of results to an unknown item

negative control

can be done with a sample/mock sample that should normally yield a negative result, allows to check for contamination of the reagents or artifacts that would give false positive

carbohydrates

found in the form of simple sugars, monosaccharides, and glucose; complex sugars, polysaccharides, and cellulose-fiber; indicators are benedicts solution and iodine

lipids

composed of long hydrocarbon chains, large amounts of energy stored in bonds, used to compose cell membranes, used in the formation of some hormones

proteins

building blocks of the body, complex molecules like amino acids, responsible for structure of organs and muscles, its indicator is biuret solution