Biology, 19.11.2020 20:20 mrsclnantambu5956
The cell membrane contains channels and pumps that help move materials from one side to the other. What are these channels and pumps made of? *
A. Carbohydrates
B. Lipds
C. Bi-Lipids
D. Proteins
Answers: 3
Biology, 22.06.2019 02:30
Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.
Answers: 1
Biology, 22.06.2019 05:40
When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity
Answers: 3
The cell membrane contains channels and pumps that help move materials from one side to the other. W...
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