Which of the following is a true statement about diffusion?
a. diffusion is only impor...
Biology, 18.10.2019 08:50 patrickdolano
Which of the following is a true statement about diffusion?
a. diffusion is only important for animal cells.
b. diffusion requires energy input from the cell.
c. only water can diffuse across a cell membrane.
d. molecules move from areas of high concentration to areas of low concentration.
Answers: 2
Biology, 21.06.2019 19:30
Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5
Answers: 1
Biology, 22.06.2019 13:40
1. -define adaptation2 explain darwin's theories of descent with modification and natural selection in detail3. -explain how each of these provides evidence for evolution: a. -fossil record, including superposition and transitional fossilsb-anatomy, including homologous structuresc-biological molecules, including dna and proteins4. -explain the difference between convergent and divergent evolution.5. -define and give three examples of artificial selection6. -define and give one example of coevolution.7. -explain biodiversity and how it benefits humans.8. -explain a type of population lest affected by environmental change.
Answers: 3
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