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• SCIE208-2101A-04

Cells, Clones, Clots and Cocaine: The Secrets of Life Science (SCIE208-2101A-04)

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Skip This Navigation Cells, Clones, Clots and Cocaine: The Secrets of Life Science(SCIE208-2101A-04) Cells, Clones, Clots and Cocaine: The Secrets of Life Science (SCIE208-2101A-04)

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Academic Resources Access a collection of materials to support your classroom experience Originality Verification A useful and effective tool to ensure the originality and integrity of written documents. Library Get research/APA help and access articles, books, and other assignment resources. Smarthinking FREE, online, 24/7 tutoring on a variety of subjects.

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Academic Resources: Access a collection of materials to support your classroom experience Library: Get research/APA help and access articles, books, and other assignment resources. Smarthinking: FREE, online, 24/7 tutoring on a variety of subjects. Current Grade: Current Grade (hidden) - Gradebook showhide 3 3 Unread Announcements LDA: not yet posted Academic Resources Access a collection of materials to support your classroom experience. Originality Verification A useful and effective tool to ensure the originality and integrity of written documents. Library Get research/APA help and access articles, books, and other assignment resources. Smarthinking FREE, online, 24/7 tutoring on a variety of subjects. Collapse Expand avaialble resources pane Course Overview Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 View Course Home Content as PDF

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Unit 4: Human Organ Systems and Natural Selection (from Wed, 02/17/21 - to Tue, 02/23/21)

Introduction

Welcome to Unit 4! Do you remember when we investigated how important oxygen was for cells in Unit 2? With no oxygen, eukaryotic cells have a hard time making enough adenosine triphosphate (ATP), and they perish. Then, the organism dies, too. This week, we will look at how our cells get that oxygen as we explore human organ systems. The human body has sophisticated systems for balancing oxygen levels. These systems and feedback loops have come about through natural selection, with those traits being selected for depending on environmental conditions. Although it seems counterintuitive that Tibetan highlanders living above 10,000 feet have fewer red blood cells to carry oxygen, this mutation makes their blood more fluid and so the oxygen can get from the blood stream to all of their body’s cells more quickly.  Though you may be on the fence of whether or not evolution occurred as described by Darwin, there is no denying that natural selection occurs, and we can see this happening in our lifetimes with the proliferation of antibiotic-resistant bacteria. So, we’ll start there. In this unit, you will do the following:

• Discuss the concept and examples of natural selection
• Recognize aspects and examples of homeostasis
• Examine human organ systems 
• Investigate diseases of human organ systems 
“I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.” — Charles Darwin Set aside time on multiple days throughout the week to work through the step-by-step directions below and successfully complete Unit 4.  Reference

Darwin, C. (1859). Struggle for existence. Origin of species. Retrieved from http://www.talkorigins.org/faqs/origin/chapter3.html  

Unit 4: Learning Activities

2a Read Announcements. (Check Announcements for mini-lesson tutorials.) 2b Read the following chapters from the Biology textbook:
• Chapter 6 Human Health and Wellness
• Chapter 7: Natural Selection
2c Review the following resources from the M.U.S.E. lesson Human Organ Systems and Natural Selection:
• Hemoglobin and Oxygen
• The Cardiovascular System
• The Digestive System
• The Endocrine System
• Viruses and Bacteria

Unit 4: Assignments

3a intellipath - Assignment Details (due by midnight CT on Tue, 2/23/21, 50 points possible). Click here to complete Determine Knowledge by Friday of this unit. Complete the rest of the Lessons by the assignment due date. 3b Unit 4 Discussion Board – Assignment Details (due by midnight CT on Tue, 2/23/21, 60 points possible). Click here to access the Discussion Board and make your first post by Friday of this unit.  Make your second and third posts on 2 different days between Saturday and Tuesday before the assignment due date. 3c

Unit 4 Individual Project – Assignment Details (complete and submit by midnight CT on Tue, 2/23/21, 150 points possible).

Click here when you are ready to submit.

Email your Faculty Member if you have difficulties posting to the Discussion Board or completing your assignments.

Announcements (3 unread of 3)

Announcements (3/3)

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Collapsed Unread Announcement  Autobiography	1/24/21, 11:59 PM
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Collapsed Unread Announcement  Week 1 Scie 208	1/24/21, 11:59 PM
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Collapsed Unread Announcement  Welcome Letter	1/24/21, 11:59 PM
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