Topic 1: essential concepts Flashcards
role of the nucleus
store genetic material and control the activities of the cell
role of the cytoplasm
where chemical reactions occur made of cytoplast
role of the cell membrane
hold the shape of the cell and controls what comes in and out
role of the mitochondria
where the reaction of respiration takes place
role of the ribosomes
where protein synthesis takes place
role of the cell wall in plants
made of cellulose gives the plant cell extra support
role of the large vacuole
contains cell sap and maintains the internal pressure to support the cell
role of the chloroplasts
where photosynthesis takes place
what are all enzymes
protiens
what is the test for starch
iodine solution turns from brown orange to blue black
test for lipids
ethanol turns from clear to a milky precipitate
test for proteins
name + process
biuret test
adding potassium hydroxide to turn solution alkaline
add copper sulphate solution
mixture will turn from blue to purple if protein is present
test for reducing sugars
adding benedict’s reagent
if present will turn from blue to red, the high the concentration the more visible colour change
what enzyme breaks down starch and into what
amylase breaks starch into simple sugars
what enzyme breaks down proteins and into what
protease turns proteins into amino acids
