# Biology: The Dynamics of Life, California Edition

## Section 3: The Nature of Biology

### The Nature of Biology

 1. Which of the following statements is true? Need a Hint? A) Everyone agrees on the definition of what organic foods are. B) Organic foods are grown using herbicides and fertilizers. C) Chemical pest controls used in farming only kill unwanted organisms. D) Organic foods are typically more expensive than those grown using conventional methods. 2. (6.0K)This graph shows the percent of U.S. students enrolled in physical education. Based on the data in the graph, which of the following statements is true? Need a Hint? A) The percent of males and females enrolled in physical education classes decreases as the grade level increases. B) The percent of males and females enrolled in physical education classes exceeds 50% for every grade level represented. C) The percent of males enrolled in physical education classes continues to increase as the grade level increases. D) The percent of females enrolled in physical education classes remains constant at 60% for each grade level represented. 3. (3.0K)This graph shows the effect of temperature on germination. Based on the data in the graph, about how many seeds from the control group germinated on day 8? Need a Hint? A) 42 B) 20 C) 13 D) 47 4. Which of the following is an SI unit that you might encounter in the study of biology? Need a Hint? A) kilogram B) pound C) mile D) Fahrenheit 5. (5.0K)This graph shows the Paramecium survival rates from an experiment. Based on the data in the graph, which of the following statements is true? Need a Hint? A) The number of paramecia surviving during the experiment always decreases. B) As the temperature increases, the number of paramecia that survive during the experiments always increases. C) The number of paramecia that survive during the experiment increases then decreases as the temperature increases. D) The number of paramecia that survive as the temperature increases is greater than the number of paramecia that are alive at the minimum temperature.