Ecology Review

Today you received a Unit 1 Ecology Review packet! Because it has been so long since we have talked about ecology, I strongly recommend working through the packet and making sure you understand the concepts. Below is a completed copy of the packet, in case you get stuck or if you would like to check your answers.

Completed Review Packet

Finals are coming up fast! Let us know if you have questions :)

-Ms. Barnes

Unit 3 Test Review: Day 2

The countdown for the first semester is going quickly! Tomorrow is our last unit test. Below you will find all of the topic worksheets given in class today, as well as the answer keys. We will get started on the test immediately, so please email me any questions you have!

Practice Worksheets
Answer Key to Worksheets
(Cell Structure Answer Key)

See you all tomorrow!

-Ms. Barnes
raechel_barnes@dpsk12.org

Unit 3 Test Review: Day 1

Hope you all had a great day with our guest teacher! Below you will find a copy of the practice test, as well as the answer key. The answer key will be presented in class tomorrow as well! Based on your results from the practice test, tomorrow you will work on a practice worksheet for the four major topics of Homeostasis.

Blank Practice Test
Practice Test Answer Key
CER Exemplar

Please email me if you have any questions!

-Ms. Barnes
raechel_barnes@dpsk12.org

Behavioral and Physiological Responses and Positive and Negative Feedback Mechanisms to maintain homeostasis

Whew.  That was a long title.

Today we are learning about how organisms can choose actions to help maintain homeostasis (behavioral responses) and about how their bodies do this automatically (physiological responses).  Additionally, some responses represent negative feedback loops, keeping conditions constant, and sometimes there are positive feedback loops where reactions build and grow constantly (unusual for homeostasis!).

Here are today's notes.  Here is the powerpoint.

Oh, and a video to help explain feedback loops:

Blood Sugar Regulation

You're not you when you're hungry, eat a snickers!

Today we learned about one of the body's ways of maintaining homeostasis: Blood Sugar Regulation. By the end of class, you should understand and be able to describe the diagram below.

Below are copies of the cornell notes, both blank and complete. Homework is to write the questions and summaries on both sides of the notes!

Blank Cornell Notes
Completed Cornell Notes

Let me know if you have any questions :) See you all tomorrow!

-Ms Barnes
raechel_barnes@dpsk12.org