//www.bmhs-la.org/apps/classes/368644/assignments/ Class Name: AP Biology Per. 2,4 Instructor(s): Carrie Rey Location: Rm 105 en-us SchoolSitePro //www.bmhs-la.org/homeworkItem2161094 //www.bmhs-la.org/apps/classes/368644/assignments/
Populations tend to exhibit specific survivorship curves based upon the dynamics of the environment and the genetic basis of organisms in the population.

A. Explain the different types of survivorship curves and give an example of each.

B. Discuss how density influences population growth.

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Animals exhibit a wide diversity of social behaviors. This requires that they develop communication strategies.

A. Discuss the different communication strategies animals have developed

B. Explain evidence showing that communication affects the behavior of the receiver.
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The complexity of structure and function varies widely across the animal kingdom. Despite this variaiton, animals exhibit common processes. These include the following.
transport of materials
response to stimuli
gas exchange
locomotion

(a) Choose TWO of the processes above and for each, DESCRIBE the relevant structures and how they function to accomplish the process in the following phyla.
Cnidaria (e.g. hydra, jellyfish)
Annelida (e.g. earthworm)
Chordata (e.g. mouse)

(b) Explain the adaptive (evolutionary) value(s) of the structural examples you described in part A.

Have a good weekend
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1. Homeostatic maintenance of optimal blood glucose levels has been intensively studied in vertebrate organisms.

A) Pancreatic hormones regulate blood glucose levels. Identify TWO pancreatic hormones and describe the effect of each hormone on blood glucose levels.

B) For ONE of the hormones you identified in (a), identify ONE target cell and discuss the mechanism by which the hormone can alter activity in that target cell. Include in your discussion a description of reception, cellular transduction and response.

C) Compare the cell-signaling mechanisms of steroid hormones and proteins hormones.
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The development of a centralized brain and nervous system were crucial in the evolution of animals.

A. Explain the nervous systems of organisms in the following phyla:
Echinoderm
Vertebrates
Annelida

B. Explain how cephalization played a role in this evolution.
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An athlete is working hard while running. There are numerous physiological differences under these conditions compared to sitting on a couch watching television.

A. Trace the path of a red blood cell from the lungs to a leg muscle and back to the heart.

B. Describe how and why the pH of the blood is different while exercising and how this aids the athlete.

C. Explain where carbon dioxide is produced in the athlete's body and how it is carried back to the lungs.
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1) How does the organization of cells, tissues and organs determine structure and function in plant and animal systems?

2) How are structure and function related in the various organ systems?

3) How do the organ systems of animals interact?
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Weekend question
Most researchers believe that modern humans evolved from Homo ergaster but they differ as to the details

A. Compare and contrast the repacement model and the out-of-Africa hypothesis.

B. Explain the following characteristics of the Cro-Magnons and discuss how these advancements were possible:
- tool use
- language
]]> Thu, 17 Feb 2011 12:33:36 PST //www.bmhs-la.org/homeworkItem2023255 //www.bmhs-la.org/apps/classes/368644/assignments/ The invertebrate worksheet is due on February 14th.
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