Characteristics+of+living+things

flat =Writing activity:= If you had to tell a person how to define something as living or nonliving, what would you tell them?

=Characteristics:=

Answer the following document using the powerpoint (below), your textbook, and other materials:



Powerpoint: media type="custom" key="10370070"

Homeostatic mechanism - requires a receptor, control center, and an effector.

=Vocabulary= Define the following in your own words and describing how you would remember this/picture this: Homeostasis Unicellular Multicellular Energy Reproduction Regeneration Ingestion Egestion Digestion Metabolism Growth Differentiation

=Living or non-living homework= Explain in sentences why the following are considered living or not living for each of the following items. Use appropriate vocabulary in your discussion.
 * Pebble
 * Tiger
 * Lamp
 * Deer
 * Seashell

=Characteristics of life lab= View the setup in the back of the room. Take a picture as a group and label your picture with the different types of mixtures. Make observations about what you see. Repeat this about 30 minutes later.

View the yeast (with sugar to give energy) provided using the moticam. Take a picture of the yeast that is budding and describe what you see happening.

Data
Discuss the changes in the flasks and the test tubes. Explain why the one test tube changed.

Analysis/Conclusions:
1. Why did the bromothymol blue change colors when a classmate exhaled into the test tube? 2. What does the production of carbon dioxide gas in the one flask indicate about the yeast? 3. How can you **be sure** that the carbon dioxide gas was produced by the yeast? 4. What does the presence of buds indicate about the yeast? 5. Why were more buds present in one of the mixtures?

Homework:
1.Summarize what you have observed about yeast to classify them as living organisms. 2. How does yeast make dough rise? 3. A recipe instructs you to add yeast to warm water not hot. Why? 4. Why does a recipe instruct the cook to let the yeast, warm water, and some sugar stand for 5 minutes or until bubbly?

=Characteristics of life review=