Cell Theory Characteristics of Living Things There are
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Cell Theory
Characteristics of Living Things • There are 5 characteristics of living things: • Living things respond to their environment • Living things need energy • Living things grow • Living things reproduce • Living things must get rid of waste See page 10 (c) Mc. Graw Hill Ryerson 2007
Is a Virus a Living Thing? •
Do Viruses. . • Respond to their environment? • Require energy? • Reproduce?
What are viruses: Tim and Moby Brain Pop • https: //youtu. be/3 N 7 b. LHtu. Z 88
What is a virus? • https: //www. youtube. com/watch? v=7 KXHwh. Tgh. WI
Characteristics of Viruses • Do not contain other cell parts So DO NOT: • Take in nutrients, • use energy, • produce waste • Need a host to reproduce.
Wacky History of the Cell video https: //youtu. be/4 Op. Bylw. H 9 DU
Discovery of Cells • The invention of the microscope let scientists discover cells. • Robert Hooke, a British scientist in the 17 th century, created a microscope to observe tree bark. He called the structures “cells”.
Discovery of Cells • Other scientists observed single-celled organism living in pond water. • Their observations lead to “Cell Theory”
Cell Theory 1. The cell is the basic unit of life. See pages 31 -32 (c) Mc. Graw Hill Ryerson 2007
Spontaneous Generation Theory • https: //www. youtube. com/watch? v=Wzb. HOY 5 f. Gqc • Bill Nye • https: //www. youtube. com/watch? v=Dlbh 6024 R 1 c • Mice came from dirty underwear • https: //www. youtube. com/watch? v=WNBy. Rgh. R 6 sw
Cell Theory 2. All cells come from other living cells. (c) Mc. Graw Hill Ryerson 2007
Cell Theory 3. All organisms are composed of one or more cells. See pages 31 -32 (c) Mc. Graw Hill Ryerson 2007
Largest Single-Celled Organism • Ted Ed video • https: //ed. ted. com/lessons/what-is-the-biggest-single-celledorganism-murry-gans
Check your understanding 1. Identify the statements that make up the cell theory. Give an example that supports each statement. 2. What processes of scientific inquiry do you think scientists used to establish the cell theory?
Is a Virus a Living Thing? • WB p 11 -13