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Science Chapter 4

Holt Science and Technology

QuestionAnswer
What must an organism be able to take in? energy and raw materials
What part of a cell do materials move in and out of? cell membrane
What does taking in raw materials and getting rid of wastes help an organism do? Stay healthy
What does an organism have to get rid of? Wastes
What is everything, including gelatin and dye, made up of? tiny moving particles
Where will particles move when they are crowded? to where it is less crowded
What do we call the movement of particles from crowded areas to less crowded areas? diffusion
What are the fluids in an organisms' cells mostly made of? water
What are particles that make up water called? molecules
What is the diffusion of water called? osmosis
What does water move through during diffusion cell membrane
What is made up of water, salts, sugars, and other particles? plasma
What helps keep plasma in balance? osmosisosmosis
What does osmosis bring into the cells that helps wilted plant cells water
How do small particles cross a cell membrane? through the channels
How do particles mve from an area of low concentration to an area of high concentration? active transport
How do particles move from a high to low concentration? passive transport
What is a sac formed from pieces of cell membrane called? vesicle
Created by: ryancandrilli
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