Lesson 1 Bio 100

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Top of Form | Question 1 | Please use the following information to answer the following question(s). The collared lizard is a species found in the Desert Southwest. Male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. The goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. The tentative explanation is that male color plays a role in attracting females for mating purposes. The prediction is that females will preferentially choose brightly colored males over dull-colored ones. To test this prediction, the student observed the interactions of female collared lizards with their male counterparts and males that were the same age and size, and that differed only in their coloration pattern. The student placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. Out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. In three instances, the females did not mate with either type. Create a bar graph of the data, plotting the type of male (dull or brightly colored) on the x-axis. On the y-axis, plot the frequency with which each type of male was chosen by females. Using this graph, answer the following question(s). Identify the experimental group of this case study. | Answer | | | | Question 2 | Which of the following is a property of life that is best illustrated by shivering and sweating? | Answer | Regulation | Comments | Correct!! | | | Question 3 | Which of the following is the correct order of complexity, going from least to most complex? | Answer | Atom, molecule, organelle, cell, tissue, organ | Comments | Correct!! | | | Question 4 | The _______ is the highest level in life's structural hierarchy. | Answer | Biosphere | Comments | Correct!! | | | Question 5 | Which of the following is an example of homeostasis? An organism that can | Answer | respond to the environment. | Comments | The correct answer is: maintain a relatively constant internal temperature. | | | Question 6 | Biologists group living things into ______ domains. | Answer | 3 | Comments | Correct!! | | | Question 7 | Almost all of the organisms in Kingdom _______ are photosynthetic. | Answer | Plantae | Comments | Correct!! | | | Question 8 | Which kingdom of Eukarya consists primarily of unicellular organisms? | Answer | Protista | Comments | Correct!! | | | Question 9 | A researcher collected archaea and protists from a thermal vent. How do the cells of these two organisms differ? | Answer | Archaea cells will contain nuclei. | Comments | The correct answer is:
Protist cells will contain organelles. | | | Question 10 | What is one mechanism of evolution? | Answer | Natural selection | Comments | Correct!! | | | Question 11 | In his book The Origin of Species, Charles Darwin developed which of the following main points? | Answer | Modern species descended from ancestral species, and organisms evolve by natural selection. | Comments | Correct!! | | | Question 12 | Which of the following is most closely associated with Charles Darwin? | Answer | Natural selection | Comments | Correct!! | | | Question 13 | What accounts for the different breeds of domesticated dogs? | Answer | Artificial selection | Comments | Correct!! | | | Question 14 | The difference between a theory and a hypothesis is | Answer | a hypothesis must be proven without a shadow of a doubt. | Comments | The correct answer is: a theory must be supported by evidence. | | | Question 15 | A good hypothesis must | Answer | be true. | Comments | The correct answer is: be falsifiable. | | | Question 16 | Researchers testing new drugs usually give the drug to one group of subjects, while another group of subjects receive placebos (sugar pills). The group that receives the placebo | Answer | is the control group. | Comments | Correct!! | | | Question 17 | Which of the following is a required element of a hypothesis-based scientific experiment? | Answer | A testable, falsifiable hypothesis | Comments | Correct!! | | | Question 18 | Which of the following are the proper components of the scientific method? | Answer | Observation, question, hypothesis, prediction, experiment, results, conclusion | Comments | Correct!! | | | Question 19 | Identify the experimental group of this case study. | Answer | Brightly colored male lizards | Comments | Correct!! | | | Question 20 | Which of the following is the hypothesis of this case study? | Answer | A function of male coloration is to attract females. | Comments | Correct!! | | | Question 21 | "Male collared lizards show considerable color variation." This is a(n) ______. | Answer | observation | Comments | Correct!! | | |

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