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Science (cells)

This is about cells.

QuestionAnswer
What is selectively permeable? Some substances can pass through a cell membrane while others cannot.
What is diffusion? The process by which molecules move from an area of higher concentration to an area of lower concentration.
What is osmosis? The diffusion of water molecules through a selectively permeable membrane.
What is passive transport? The movement of dissolved materials through a cell membrane without using cellular energy.
What is active transport? The movement of materials through a cell membrane using cellular energy.
The cell membrane is _______? Selectively permeable.
In diffusion, molecules move from an area of ______ to an area of ______? Higher concentration to lower concentration.
The two ways of using active transport are by ___________ and ___________. Transport proteins and engulfing.
In ____________, water molecules diffuse through a selectively permeable membrane. Osmosis.
True or false? Selectively permeable means letting some but not all substances pass through. True!
True or false? Osmosis is the process by which molecules tend to move from an area of higher concentration to an area of lower concentration. False!
True or false? The process by which water moves across a selectively permeable membrane is called diffusion. False!
A fresh water fish is placed into the ocean. What type of transport is this? Passive transport-osmosis.
Oxygen enters a cell from the bloodstream. What type of transport is this? Passive transport-diffusion.
WHite blood cells ingest invading cells and destroy them. What type of transport is this? Active transport- engulfing.
Active transport requires _______? Energy.
Created by: EEckhart_odms
 

 



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