help for biology
Homework Assignment: Cells
| Title |
Homework for Chapter 4 Cells |
| Subject |
Biology |
| Author |
Urbi Ghosh, PhD |
| Grade level |
College, Intro Level |
| Time duration |
60 minutes |
| Overview |
Activity is to gaining understanding of cellular structure in eukaryotic vs. prokaryotic cells by practicing retrieval of the reading. |
| Objective |
Understand cellular structure, organelle functions, and contrast to prokaryotic cells |
|
Materials
|
Textbook Biology 2e Openstax |
Activity
I. Watch the following videos gives a nice introduction to cells. 1. https://youtu.be/URUJD5NEXC8 2.http://www.youtube.com/watch?v=gFuEo2ccTPA&list=PLhWQfyIjGDq40wpDLJBsLcNcykz8h7FZf 3. A tour of the cell (Bozeman Science): https://youtu.be/1Z9pqST72is 4. https://youtu.be/pv_-RWaADwk 5. “Why are cells so small?” (Bozeman science) https://youtu.be/wuXSEOKNxN8 6. https://youtu.be/1Z9pqST72is
II. Answer the following questions below in full sentences from the knowledge you have gained from the watching the vides and reading the textbook chapter.
1. What is a cell? 2. Are all cells of a human body of same shape, size and have same function? 3. Are cells static or dynamic i.e. they have various chemical reactions going on within them? 4.Why are cells so small? Hint: Discuss the challenges of surface to volume ratios. 5. Fill in the blank: By being small, cells have ____________ _ surface area (increased/decreased) but _______ ________ volume (same / decreased / increased). 6. How does the cell increase its surface area? 7. Which of the two cells will have more surface area- a. One which has many cellular components having membranes with many folds and turns. b. One which has many cellular components having no folds and turns in their membranes. 8. What are the differences between prokaryotic and eukaryotic cells? 8a. What is common to all types of cells irrespective of whether they are prokaryotic or eukaryotic? (list three aspects for full credit)
8b. How many layers is the cell membrane and what is it composed of? 9. Answer the following questions about the prokaryotic cell properties: 9a. Did prokaryotes evolve before or after eukaryotes? 9b. What organism is an example of prokaryotes? 9c. What subcellular structures does a prokaryote have ? 9d. What subcellular structures does a eukaryote have? 10. What are organelles?
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