pag 11 inv into the meas of plant or animal responses Flashcards
temp used for daphnia and why
5-25 to keep daphnia alive
method used for measuring heart rate of dahnia, any short comings, improved method
clicked a clicker
reaction time
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was the procedure valid for inv heart rate in daphnia, what parts ensured validity, improvements if repeated
yes
independent variable of daphnia pag
temperature of water bath
dependent variable for daphnia pag
heart rate of daphnia
control variables for daphnia pag
number of daphnia examined- only one
temperature of room
light intensity of light source in microscope
piece of equipment used to transfer daphnia to cavity slide
widened pipette
why is most of water removed from cavity slide
so animal trapped in a small drop and cannot swim out of view
purpose of viewing daphnia at lowest power objective
to check you can identify the heart
ethical precautions for daphnia
keep daphnia in water they came in as cannot survive in tap water
why is modelling clay used
small pieces used to support cavity slide so space underneath
what is actually placed on the microscope stage
petri dish with daphnia in c.slide
how and is medium created, what happens as a result
water desired temp is pipetted into p.dish
cooling/warming effect on small vol of water in c.slide
why does exercise affect pulse rate in humans
muscles aerobically respire, increased oxygen demand, heart beats quicker so blood reaches muscles quicker to meet demands
further human response you could go on to investigate
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