Daphnia Quiz: Question Preview (ID: 15170)

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what is the name of the organism we are studying?
a) rotifer
b) paramecium
c) flea
d) daphnia

what organ is on the back of the organism and contracts very fast?
a) heart
b) brain
c) intestine
d) eye

what does LD50 stand for?
a) low dose of 50% of the sample
b) lethal dose where 50% of the experimental population dies
c) lethal dose where 50 grams of the chemical kills
d) loco death of 50% of the population

how do you make a 1% solution of alcohol for the experiment?
a) 99 drops of water, 1 drop of alcohol
b) 99 drops of alcohol, one drop of water
c) 5mL of water 1 mL of alcohol
d) 5mL of alcohol, 1 mL of water

when measuring heart rate in daphnia, for how much time you count the beats?
a) 15 seconds
b) 60 seconds
c) 25 seconds
d) 10 seconds

alcohol causes the heart rate to ?
a) increase
b) decrease
c) no change
d) makes it stronger

where did we collected the specimens?
a) the ocean
b) the seasonal pond outside the school
c) a lake
d) flash flood

what safety equipment did we use?
a) goggles
b) lab apron
c) gloves
d) safety shower

how many trials did you do for each treatment?
a) 3 trials
b) 1 trial
c) 30 trials
d) 10 eowiieew

a) jnojn;
b) ihbihb
c) ihbihb
d) jihbi

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