1999 AP Biology Questions - campbell.k12.ky.us

[Pages:7]1999

The College Board Advanced Placement Examination

BIOLOGY SECTION II Time--1 hour and 30 minutes Number of questions -- 4 Percent of total grade -- 40 Answer all questions. Number your answer as the question is numbered below. Answers must be in essay form. Outline form is NOT acceptable. Labeled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. It is important that you read each question completely before you begin to write. 1. The rate of photosynthesis may vary with changes that occur in environmental temperature, wavelength of light, and light intensity. Using a photosynthetic organism of your choice, choose only ONE of the three variables (temperature, wavelength of light, or light intensity) and for this variable

? design a scientific experiment to determine the effect of the variable on the rate of photosynthesis for the

organism;

? explain how you would measure the rate of photosynthesis in your experiment; ? describe the results you would expect. Explain why you would expect these results.

2. Communication occurs among the cells in a multicellular organism. Choose THREE of the following examples of cell-to-cell communication, and for each example, describe the communication that occurs and the types of responses that result from this communication.

? Communication between two plant cells ? Communication between two immune-system cells ? Communication either between a neuron and another neuron, or between a neuron and a muscle cell ? Communication between a specific endocrine-gland cell and its target cell

Copyright ? 1999 College Entrance Examination Board and Educational Testing Service. All rights reserved.

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