"active transport is when molecules diffuse from a higher concentration to a lower concentration. facilitated transport is when proteins that extend through the cell membrane provide a channel through which certain substances can diffuse more rapidly than by passive diffusion. the lipid bilayer opens up, allows the ions or molecules to enter the cell, and then closes. diffusion, or passive transport, is when molecules diffuse from a lower concentration to a higher concentration."
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Biology, 21.06.2019 22:00
Type the correct answer in the box. use numerals instead of words. fiona has a lovely flower bed in her yard. she wants to add a fence along one side of the flower bed. the fence material is sold in meters. fiona knows that her flower bed is 200 centimeters in length. how much fencing material does fiona need in meters? fiona needs meters of fencing material for her flower bed.
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Biology, 22.06.2019 02:40
How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.
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Biology, 22.06.2019 04:30
Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids
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"active transport is when molecules diffuse from a higher concentration to a lower concentration. fa...
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