KEY Life Review Worksheet Part One | Chapter 1 (1.1‐1.3) Life Characteristics 1. List the traits that all of life share: a. Made of one or more cells b. Need for energy c. Response to environment d. Reproduction and development 2. Define organism: Any individual living thing made of one or more cells. 3. How do we know when animals are of different species? Of the same? Organisms that CANNOT create fertile offspring are of different species. Organisms that CAN create fertile offspring are the same species. 4. Where is biodiversity the greatest? Biodiversity is the greatest at the equator (warmer areas). 5. Give an example for each unifying theme of biology below: Structure and function • Foot for walking • • Teeth for grinding • • Red blood cells • carrying O2 • Channel proteins for transporting chemicals
Homeostasis Regulating body temperature Car’s cruise control Blood pressure
Adaptation & Evolution •
Any inheretid
Systems •
Your digestive
trait that helps
system is a
an organism to
network of
better survive,
functioning
like opposable
parts (stomach,
thumbs.
intestine, bladder, etc.)
Metric System 6. Using your knowledge of the metric system, what unit of measure would you use for the following: a. Weigh an object: Grams b. Measure the volume: Liters c. Length of an object: Meters 7. Answer the following: a. 0.63 daL = 630 cL b. 3,459mm = 3.459 m c. 0.1237hg = 123.7 dg d. 9.38km = 93.8 hm
Scientific Method 8. Place the following steps of the scientific method in order. 3 Form a hypothesis in an “If…,then…” statement (possible solution to problem). 6 Evaluate your results. 1 Make an observation/state a problem. 7 Write a conclusion and share your results. 5 Collect and analyze your data. 2 Do background research on your problem. 4 Design an experiment 9. Homer notices that his shower is covered in ants. His friend Barney tells him that baby powder will get rid of the ants. Homer decides to check this out by covering half his shower with baby powder and the other half his shower with nothing. After 5 days of treatment there are no more ants present in his shower.
a. What was Homer’s initial observation? Noticed his shower covered in ants. b. What is the control group? The ½ of the shower treated with water. c. What is the experimental group? The ½ of the shower treated with baby powder. d. What is the independent variable? Type of treatment. e. What is the dependent variable? Presence or absence of ants. 10. What should Homer’s conclusion be? It is not known whether the baby powder got rid of the ants in
the shower because the ants also went away on the untreated side of the shower. More trials are needed to test Homer’s hypotheis. 11. Compare and contrast: Hypothesis vs. Theory
Specific/Testable, Educated guess If…then statement, proposed to answer a Can change based scientific question. on new evidence
Long standing, supported by lots of data, proposed explanation for a wide range of observations and results