Biology, 24.09.2020 14:01 jakalenn2018
7. Sarah designed an experiment to find out which mouthwash was most effective against some bacteria. She
cut out four different circles from a paper towel and soaked each circle in a different mouthwash. She put the
circles on a nutrient agar-coated Petri dish that was covered with bacteria commonly found in the mouth. She
then incubated the plate for 24 hours. The picture shows the results of this test,
> What should Sarah do to improve her experiment?
Answers: 2
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All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time
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What condition is kept close to its set point in osmoregulation? a. body temperature b.platelet count c.blood glucose level d.water balance
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7. Sarah designed an experiment to find out which mouthwash was most effective against some bacteria...
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