Biology/diffusion
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Question
Right now I am trying to write up a lab report(that's due tomorrow), and I am having a difficult time answering this question. It would be greatly appreciated if you could help me.
What are three processes that cells use to allow nutrients, H2O, and large compounds to pass through their membranes into and out of the cell. Explain each process."
Hi lindsay
Simple diffusion- Materials pass through easily from areas of higher concentration to areas of lower concentration Gasses and water pass freely
Facilitated diffusion- Simple diffusion but carrier molecules are needed
active transport- Transport agsinst the concentration gradient (Lower concentration to higher ) requires energ
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Walter Hintz
Expertise
Science teacher for over 50 years. MSc. in biology. I can answer questions in general biology, zoology, botany, anatomy and physiology and biochemistry.
Experience
I have a MSc in biology and have been a science teacher for over 50 years. At present I am a faculty member at a college and a science consultant at seven catholic schools.
Publications
The Ohio journal of Science
Momentum-The Journal of the Catholic Education Association
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