subject
Biology, 28.08.2021 02:40 KingJayDevil

in his second experiment, what should he da different. in the same science fair, tina asks the question "does caffeine increase the heart rate of an earthworm?" in test 1, she measures the heart rate by looking at the earthworm under a microscope, the earthworm has a heart rate of 50 bpm (beats per minute). in test 2, she places a few drops of caffeine on the earthworm's skin and measures the rate again. in this test, the heart rate is 68 bpm.

ansver
Answers: 1

Other questions on the subject: Biology

image
Biology, 21.06.2019 14:20, caromaybelline71
Aseries of connections of food chain in an ecosystem is called a what
Answers: 1
image
Biology, 21.06.2019 22:00, bighomie28
Does mitochondria still meet the definition of a eukaryote why or why not?
Answers: 3
image
Biology, 22.06.2019 15:00, belle5828
Agroup of students want to live a healthier life style they decide to use one of these following vegetable oils for cooking apex
Answers: 1
image
Biology, 22.06.2019 17:00, genyjoannerubiera
Which factors changed throughout the mice experiment
Answers: 2
You know the right answer?
in his second experiment, what should he da different. in the same science fair, tina asks the quest...

Questions in other subjects:

Konu
Business, 31.07.2019 06:10