Pre-AP Biology Biology Practice Test
0 of 4 questions completed
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
0 of 4 questions answered correctly
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Clostridium perfringens is a species of heterotrophic bacteria that is commonly found consuming decaying organic matter in the sediments of freshwater lakes. An investigation was conducted into the effect of temperature on growth of C. perfringens. Researchers recorded the temperature of a 1-liter sample of lake water and the concentration of bacteria in the water over a 30-day period. The data are represented in the graph.
1. Which of the following statements best describes the relationship between temperature and growth of the bacterial population?CorrectIncorrect
The biologists are interested in analyzing other environmental conditions that may regulate the growth of the bacterial population. Which of the following is the LEAST likely to affect the population growth of the bacteria in the lake?CorrectIncorrect
The diagram represents a model of a typical food web from coastal waters in cool temperate and subpolar seas, such as those around Antarctica. Use the model to answer the following question.
If cod were overfished in this Antarctic region and were not an available food source, which of the following changes in the community is most likely to occur as a result?CorrectIncorrect
Duckweeds are small aquatic plants that live in freshwater ponds and streams throughout North America. Scientists conducted an experiment to determine how two different species of duckweed, Lemna polyrrhiza and Lemna gibba, affect each other’s growth. They set up three containers: one with only Lemna polyrrhiza, one with only Lemna gibba, and one with both species together. The graph shows the results of all three experimental trials.
Which of the following claims is most consistent with the results of the experiment?CorrectIncorrect