Biology Homeostasis Study Guide

University:
High School
Course:
High School Biology
Academic year:

2019
Views:

106

Pages:

2
Author:

Giselle A.

Biology LS1-3 Study Guide PE 1-3: Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis. Essential Terms: Homeostasis Constant Line graph Negative Feedback Qualitative data Bar graph Independent variable Quantitative data Experimental Group Dependent variable Hypothesis Control Group Guiding Questions: Fill out the homeostasis and negative feedback chart below: Organ Body system(s) Brain (hypothalamus section) Nervous Brain (brain stem) What does this organ help control? Body temperature Heart rate Maintains homeostasis by: High: tells body to sweat, increase blood flow to skin Low: Shiver, reduce blood flow to extremities High: Low: Liver High: Low: Kidneys High: Low: Heart and lungs Oxygen levels High: Low: 1. Pick any of the examples of homeostasis and negative feedback from the chart above. Create and label a graph that demonstrates the body using negative feedback to maintain homeostasis. 2. How do scientists plan and conduct investigations? List all the steps required. 3. What makes a good scientific question? How is this different from a non-scientific question? 4. What are the characteristics of a good hypothesis? 5. From your Alka-Seltzer experiment, identify: a. The independent variable b. The dependent variable c. At least 3 constants 6. Homer Simpson notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. a. Write out a possible hypothesis for this experiment. b. What is the independent variable? c. What is the dependent variable? d. What is the control “group” in this narrative? e. What is the experimental “group”? 7. What is the difference between quantitative and qualitative data? Give examples of each. 8. What are the characteristics of a good graph? Use the data tables below to answer the questions # of Hours of Study Grade: Girls Grade: Boys 0 20 20 2 60 55 4 70 65 6 80 75 8 90 85 10 100 95 9. What type of graph would you make to represent this data, and why? 10. What would you put on the X-axis? What would go on the Y-axis? 11. Draw out a graph for the data on the left. Be sure to label and code everything!