Biology Spring Semester (Period 3) Assignments
- Instructor
- Cynthia DeLay '92
- Term
- 2012-13 School Year
- Department
- Science
- Location
- 212
Upcoming Assignments
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1. A frog does not chew its food. What do the positions of its teeth suggest about how the frog uses them?
2. Trace the path of food through the digestive tract.
3. Trace the path of blood through the circulatory system, starting at the right atrium.
4. The abdominal cavity of a frog at the end of hibernation season would contain very small fat bodies or none at all. What is the function of the fat bodies?
5. Structures of an animal’s body that fit it for its environment are adaptations. How do the frog’s powerful hind legs help it to fit into a life both in water and on land?
6. During one mating of frogs, the female lays some 2,000 to 3,000 eggs in water as the male sheds millions of sperm over them. How do these large numbers relate to the frog’s fitness for life in water?
Then be sure to finish your lab with a concluding paragraph. Did you achieve the objectives of the lab? Explain.
If you need to complete the dissection because you were absent, there is a virtual dissection located here... http://frog.edschool.virginia.edu/Frog2/ (the frogs we used in class were preserved frogs). Make your external observations of the fog first (what does it look like, describe the external features, mouth, legs, can you tell if it is male or female? why or why not?). Then begin the dissection and make your internal observations (describe the cuts that are made, describe the organs - they are layered on top of one another and you will need to draw how they appear when you first open up the frog and then after you remove the liver and other digestive organs; label your drawings; how do the various organs connect to one another, particularly in the digestive tract and the reproductive tracts?).
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**For the exam, you may use your notebook if you wish. Handwritten notes only - no printouts, no packets, no typed notes, no photocopies. No textbook either. Only your own, handwritten notes. Your sub has been told about this.
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– DNA replication animation by interact Medical – YouTube
• http://www.youtube.com/watch?v=zdDkiRw1PdU&feature=related
– DNA replication (6 10) – YouTube
• http://www.youtube.com/watch?v=z685FFqmrpo&feature=channel
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From Tuesday 1/22:
Students are to use their textbooks and complete the Section review questions for Chapter 11, sections 1, 2 and 3 --> #1-6 on page 266, #1-5 on page 269, and #1-5 on page 274. They should NOT be working together.
From Wednesday 1/23: