Chapter 3: Cells Essay
Student Name: | Emily Mansfield |
Lecture Activity #3: Cells (Chapter 3)
Instructions: Read chapter 3 in your textbook and review the lecture notes and study resources provided by your instructor. Type your answer in the answer block provided for each question. Answer blocks should expand as you type. If you experience difficulty typing in the provided answer blocks, you may type your answers in a new document. Save a copy of the completed activity to your computer for your records. Although this activity is not graded, your instructor reserves the right to require students to submit their completed work at any time throughout the semester.
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Clinical Application Questions
1. A “red hot” bacterial infection of the intestinal tract irritates the intestinal cells and interferes with digestion. Such a condition is often accompanied by diarrhea, which causes loss of body water. On the basis of what you have learned about osmotic water flows, explain why diarrhea may occur. Diarrhea may occur because the cells within the intestinal tract have been damaged, affecting the mucous lining of the intestines. When these cells and mucous lining have been damaged, they are not able to absorb properly, which can lead to passive loss of nutrient-rich fluids and decreased ability to absorb the lost fluids. Osmosis to absorb these necessary liquids into our bodies cannot happen because the bacterial infection has damaged the cells that perform this very important task and cause diarrhea. Without proper cell function, osmosis cannot occur. |
2. Dynein is missing from the cilia and flagella of individuals with a specific inherited disorder. These individuals have severe respiratory problems and, if males, are sterile. What is the structural connection between these two symptoms? Dynein is a protein from