Mistakes Flashcards
reason of anomalous result
misread value
‘lock and key’
active site complimentary, bind, release products
test glucose
Benedict, boil, blue > orange
reactants in algae photosynthesis
water and carbon dioxide
how to prepare cell for microscope
dye, microscope slide
why does red blood cell burst, not plant
water enters via diffusion, cell wall prevent bursting
examples of aseptic techniques
sterilised surface, open lid at angle
three stages mitosis
DNA + organelles replicate, chromosomes separate to opposite poles, nucleus and cytoplasm and cell membrane divides
similarities of xylem and phloem
both transport substances throughout body
differences of xylem and phloem
xylem have lignin, xylem are dead, xylem carry dissolved water and mineral ions + phloem carries dissolved sugars
why is there a higher uptake of water on a hot day rather cold?
more evaporation, more water loss, more water taken up to replace water loss
blockage of arteries causes cell to die
less oxygen supply to heart, decreases rate of respiration
how do stents work?
open artery, to allow more blood to go through
amylase is a polymer of . . .
many amino acids
low components of blood effects
low red blood cells = low oxygen = low respiration = low energy and functional organs and lactic acid = muscle fatigue, low white blood cells = decreased pathogens inhibited = higher infections, low platelets = decreased blood clots
blocked tube gall bladder small intestine difficulty digesting fat
less bile reaches small intestine = lower fat emulsification = decreased surface area for lipase to break down fat and pH not neutralised = lipase not working at optimum pH
why do arteries have a thick muscle wall
to maintain high pressure
effects liver cirrhosis
no bile, food not absorbed = loss of weight, lactic acid not broken = accumulates = body poisoned = increase oxygen debt = muscle fatigue, proteins not broken = accumulation of amino acids, no toxin removal = accumulates = pain
leaking valve difficult exercise
backflow = reduced blood flow rate from heart = decreased oxygen supply = less respiration = anaerobic = lactic acid = increase oxygen debt + less carbon dioxide removal = muscle fatigue
one ventricle less efficient
oxygenated and deoxygenated blood mix, less oxygen to cells
why axolotl die water less oxygen concentration
less diffusion of oxygen into cells = less respiration = less energy = lower metabolism
pancreatic cancer lose weight
decreased enzyme production = food not broken down = low glucose absorption = less glucose available for respiration = use of stored fat for energy
route of oxygenated blood from lungs to cells
blood travels pulmonary vein, to left atrium
investigation for pH effect on amylase
range three pH values, keep starch concentration same with same temperate water bath, qualitative observations with iodine, colour changes at different temperatures, repeat
