bisc lab exam vocab Flashcards
Should you attempt to pick up broken glass with your hands (even with gloves on)?
No
what should you do if soemhting spills or breaks?
report it to lab instructor
examples of structural molecules
cellulose in plant walls and phospholipids in cell membranes
examples of functional molecules
enzymes, neurotransmitters, and hormones
what are the 4 macromolecules
carbs, lipids, proteins and nucleic acids
what is dehydration synthesis
reaction to form monomers into polymers with use of energy and release of water
what is hydrolysis
when polymers are broken down using energy and with the addition of a water molecule
example. digestion of food, seed germination
what is the smallest form of a carb called
monosaccharides- examples are : glucose, fructose and galactose
common disaccharides
maltose, sucrose, lactose
common polysaccharides
starch, glycogen and cellulose(not digestbale for humans)
Benedict’s reagent is a blue solution containing sodium citrate, sodium carbonate and
copper sulfate. This deep blue alkaline solution will create a ______ precipitate when
boiled in the presence of a simple (monosaccharide or disaccharide) reducing sugar.
reddish
Lugol’s reagent (Iodine test) is a yellow amber mixture of Potassium iodide and Iodine
(I2KI) that produces a dark blue color when mixed with ______.
starch
Biuret reagent to detect the presence of _________. This is a blue reagent which contains NaOH and Cu2SO4, among other reagents. The Cu2+ ions react with peptide bonds in the alkaline environment to create a violet or lavender color in the
presence of proteins. The intensity of the color change depends on the number of peptide
bonds present, this means a more concentrated protein sample will produce a darker
shade of violet when tested
proteins
