A tea bag can model a cell. The fabric of the bag
represents the cell membrane.
In part of th...
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Biology, 21.06.2019 14:00
Although the two theories differ on the evolutionary path of dinosaurs, they agree that
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Biology, 21.06.2019 20:00
How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex
Answers: 2
Biology, 22.06.2019 12:30
Identify the structure in organisms that do not have kidneys that is adapted to regulate water balance
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Biology, 22.06.2019 13:00
This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient
Answers: 1
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