In a classic experiment carried out by the biologist Hop
dic 20 century, 20 young rats were di...
Biology, 18.04.2020 13:51, sarahbennett11p4yxlb
In a classic experiment carried out by the biologist Hop
dic 20 century, 20 young rats were divided into two groups.
One group was fed on a diet of pure carbohydrate, lipid and
protein; the other was fed the same diet. but with some added
milk. The rats were weighed every day. After 18 days the diets
of the two groups were swapped over.
A)Name two types of nutrient that were missing from the diet of only one of the groups.
B) Suggest why Hopkins used young rats rather than adult rats, for his investigation.
C) Explain the importance of switching the diets of the two groups after 18 days.
D) suggest some important control variables that Hopkins kept constant during his investigation.
Answers: 3
Biology, 21.06.2019 22:30, weeblordd
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Answers: 1
Biology, 22.06.2019 01:00, Samuelgamboe
The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote
Answers: 2
Biology, 22.06.2019 05:30, joshuajoseph249
Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor
Answers: 1
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