LIVING THINGS 7 th Grade Chapter 8 Section 1 Pgs

Do Now… Complete Chapter 8 Preview Activity. Glue completed worksheet in notebook.

Objectives Students will… Complete Chapter 8 Preview Activity to become familiar with chapter content Distinguish between living and nonliving things Identify what living things need to survive Get back chapter 20 science test

Organisms Any living thing is called an organism. Which of the following would be considered an organism? Frog Leech Rock Sand Elephant Ipod

What are living things like? The Cell Smallest unit of life Has an orderly structure Contains instructions for life Gets and uses materials from its surroundings

How organisms grow A one-celled organism grows by increasing the size of the cell. A many-celled organism grows by increasing the number of cells.

Plants vs. Animals pgs PlantsAnimals Use ___________, ____________, and _____________ to make food. Cannot use ________________ to make food. Must get energy by _________ ______________ Food must be combined with ______________ to release energy

For Next Time… Complete Self-Check questions #1-3 pg. 217 in science notebook Have test signed by a parent due Monday urce/tdc02.sci.life.colt.alive/is-it-alive/ urce/tdc02.sci.life.colt.alive/is-it-alive/

HOW ARE LIVING THINGS CLASSIFIED? 7 th Grade Chapter 8 Section 2

Do Now… Define genus, phylogeny and kingdom on index cards. Check Self Check questions #1-3 pg. 217

Objectives Students will… Describe how early scientists classified living things Explain the system of binomial nomenclature Demonstrate how to use a dichotomous key

Classification Binomial Nomenclature (words are in Latin) First Word Genus (a group of similar species) Second Word Feature of the organism

Classification Why people use scientific names to classify organisms 1) Using scientific names helps avoid mistakes 2) Organisms with similar evolutionary histories are classified together 3) Scientific names provide descriptive information about a species 4) Scientific names allow information about organisms to be organized easily and efficiently

Determining the phylogeny of an organism Scientists use… Similarities in structure Fossils Hereditary information Early stages of development

Classification of Animals Kingdom Phylum ClassOrder Family GenusSpecies Way to Remember Kangaroos Play Cellos, Orangutans Fiddle, Gorillas Sing

Tools for Identifying Organisms Dichotomous keys are used to identify organisms. They provide descriptions and illustrations of organisms and information about where an organism lives. For example—the characteristics used to identify mice in North America 1) Tail hair 2) Ear Size 3) Tail Length 4) Tail Coloration What characteristics could you use if you wanted to identify a dog?

Dichotomous Key Using a Key Classification of Living Things terindex.htm terindex.htm

For Next Time… Complete Self-Check Questions #1-3 pg. 220 on loose leaf. This will be a 5pt HW assignment!

USING A DICHOTOMOUS KEY AND INTRO TO THE CELL THEORY 7 th Grade

Review Now… Check Self Check questions #1-3 pg. 220 Hand in questions

Objectives Students will… Describe the development of the cell theory Practice working with a dichotomous key to identify macro invertebrate life

In the Beginning… Scientists didn’t know what cells looked like or even that they existed! In the late 1500s, a Dutch Optometrist created the first microscope by putting 2 magnifying glasses together in a tube.

Scientist Contributions ScientistsContribution Antonie van Leeuwenhoek Made a simple microscope Robert Hook Named cells after viewing cork under a microscope Matthias Schleiden Discovered that all plants are made of cells Theodor Schwann Discovered that all animals are made of cells Rudolph Virchow Proposed that every cell came from a cell that already existed

Partner Pairs Sean/Greyson Maddie/Megan Gabby/Caroline K. Gabrielle/Anna Julia/Abby Caroline H./Rachel Salvo/Owen Michael C./Ryan Jake/Michael S.

EEK! Aquatic Critter Key dnr.wi.gov/org/caer/ce/eek/critter/wa tercritter/critterindex.htm dnr.wi.gov/org/caer/ce/eek/critter/wa tercritter/critterindex.htm (Type in search—Eek Water Critter Key) With a partner, explore and identify macro invertebrate creatures using a dichotomous key. Label the creatures on the key.

For Next Time… Read pgs Define cell theory, cell walls, cell membrane, cytoplasm and ribosomes