Which of the following is NOT a goal of science? 1. to investigate and understand the natural world to explain events in the natural world to use data to support a particular point of view to use derived explanations to make useful predictions 2. 3. 4. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 The work of scientists usually begins with 1. testing a hypothesis. 2. careful observations. 3. creating experiments. 4. drawing conclusions. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Science differs from other disciplines, such as history and the arts, because science relies on 25% 25% 25% 25% 1. facts. 2. testing explanations. 3. observations. 4. theories. 1 2 3 4 5 1 2 3 4 Information gathered from observing a plant grow 3 cm over a two-week period results in 1. 2. 3. 4. 1 inferences. variables. hypotheses. data. 2 3 4 5 25% 1 25% 25% 2 3 25% 4 You suggest that the presence of water could accelerate the growth of bread mold. This is a(an) 25% 25% 25% 25% 1. conclusion. 2. hypothesis. 3. experiment. 4. analysis. 1 2 3 4 5 1 2 3 4 A hypothesis 1. can be completely proven. 2. may be disproved by a single experiment. 3. does not have to be tested to be accepted as probably correct. 4. is a proven fact. 1 2 3 4 5 25% 25% 25% 25% 1 2 3 4 Hypotheses may arise from 1. prior knowledge. 2. logical inferences. 3. informed, creative imagination. 4. all of the above 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following is a valid hypothesis for why a plant appears to be dying? 1. The plant is not being watered enough. 2. The plant is being watered too much. 3. The plant is receiving too much sunlight. 4. all of the above 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 In science, a hypothesis is useful only if 1. it is proven correct. 2. it can be proven incorrect. 3. it can be tested. 4. the explanation is already known. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following is NOT a part of how scientists work? 1. 2. 3. 4. 1 experimenting observing guessing hypothesizing 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following variables present in Redi’s experiment on spontaneous generation is NOT a controlled variable? 1. gauze covering that keeps flies away from meat 2. types of jars used 3. types of meat used 4. temperature at which the jars were stored 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 A controlled experiment allows the scientist to isolate and test 1. a conclusion. 2. a mass of information. 3. several variables. 4. a single variable. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Scientists publish the details of important experiments so that 1. their work can be repeated. 25% 2. their experimental procedures can be reviewed. 3. others can try to reproduce the results. 4. all of the above 1 1 2 3 4 5 25% 2 25% 3 25% 4 The ability to reproduce results is an important part of any 1. 2. 3. 4. 1 hypothesis. theory. law. experiment. 2 3 4 5 25% 1 25% 25% 2 3 25% 4 When enough experimental data support a hypothesis, the hypothesis becomes a(an) 1. 2. 3. 4. 1 fact. theory. inference. conclusion. 2 3 4 5 25% 1 25% 25% 2 3 25% 4 A theory 1. is always true. 2. is the opening statement of an experiment. 3. may be revised or replaced. 4. is a problem to be solved. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following theories is(are) needed to explain why marsupial mammals are found only in Australia? 1. theory of evolution 25% 25% 25% 25% 2. theory of plate tectonics 3. both a and b 4. neither a nor b 1 2 3 4 5 1 2 3 4 A well-tested explanation that unifies a broad range of observations is a(an) 1. 2. 3. 4. 1 hypothesis. inference. theory. controlled experiment. 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Biology is the study of 1. the land, water, and air on Earth. 2. the living world. 3. animals and plants only. 4. the environment. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following is NOT a characteristic of all living things? 1. growth and development 2. ability to move 3. response to the environment 4. ability to reproduce 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following characteristics of living things best explains why birds fly south for the winter? 1. Living things respond to their environment. 2. Living things maintain internal balance. 3. Living things are made up of units called cells. 4. Living things are based on a universal genetic code. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Cell specialization in multicellular organisms allows cells to 1. reproduce. 2. perform different functions. 3. respond to their environment. 4. be less complex. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 The amount of light and temperature are examples of 25% 1. factors necessary for life. 2. methods of energy production. 3. factors to which living things respond. 4. factors that affect reproduction. 1 1 2 3 4 5 25% 2 25% 3 25% 4 The process by which organisms keep their internal conditions fairly constant is called 1. 2. 3. 4. 1 homeostasis. evolution. metabolism. photosynthesis. 2 3 4 5 25% 1 25% 25% 2 3 25% 4 What is the term for the land, water, and air on Earth? 1. 2. 3. 4. 1 population community biosphere environment 2 3 4 5 25% 1 25% 25% 2 3 25% 4 What is the term for a group of organisms of one type living in the same place? 1. 2. 3. 4. 1 biosphere ecosystem population environment 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following terms includes all the others? 1. 2. 3. 4. 1 biologist botanist zoologist paleontologist 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which level of organization includes all of the other levels? 1. 2. 3. 4. 1 organism ecosystem population community 2 3 4 5 25% 1 25% 25% 2 3 25% 4 In the metric system, the basic unit of length is the 1. 2. 3. 4. 1 centimeter. kilometer. millimeter. meter. 2 3 4 5 25% 1 25% 25% 2 3 25% 4 How many centimeters are in 2.4 km? 1. 2. 3. 4. 1 240 2400 24,000 240,000 2 3 4 5 25% 1 25% 25% 2 3 25% 4 On the Celsius temperature scale, how many degrees are between the freezing and boiling points of water? 25% 25% 25% 25% 1. 68 2. 100 3. 212 4. 1000 1 2 3 4 5 1 2 3 4 Which is NOT a unit of measurement in the metric system? 1. 2. 3. 4. 1 meter inch liter gram 2 3 4 25% 5 1 25% 25% 2 3 25% 4 The basic unit of mass in SI is the 1. 2. 3. 4. 1 meter. ounce. liter. gram. 2 3 4 5 25% 1 25% 25% 2 3 25% 4 To observe a small, living organism, a scientist might use a(an) 1. electronic balance. 2. TEM. 3. compound light microscope. 4. electron microscope. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 A compound light microscope 1. is necessary to study biology at the chemical level. is required for most experiments. can magnify objects up to about 1000 times. is an essential tool for producing three-dimensional images. 2. 3. 4. 25% 1 1 2 3 4 5 25% 2 25% 3 25% 4 Which of the following is the best reason for using a scanning electron microscope? 1. ability to magnify objects that are larger than 0.2 micrometers 2. ability to observe live organisms 3. ability to see three-dimensional images of the surfaces of objects 4. ability to see movement within living cells 1 2 3 4 5 25% 1 25% 2 25% 3 25% 4 An instrument that allows light to pass through the specimen and uses two lenses to form an image is a(an) 25% 25% 25% 25% 1. compound light microscope. 2. electron microscope. 3. TEM. 4. SEM. 1 2 3 4 5 1 2 3 4 An instrument used to separate cell parts according to density is the 1. compound light microscope. 2. electron microscope. 3. blender. 4. centrifuge. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 What is the term given to a group of cells that develops from a single original cell? 1. 2. 3. 4. 1 community cell culture nutrient solution cell fractionation 2 3 4 5 25% 1 25% 25% 2 3 25% 4 The best instrument to use to separate the liquid portion from the solid portions in whole blood is a(an) 25% 25% 25% 25% 1. compound light microscope. 2. centrifuge. 3. test tube. 4. electron microscope. 1 2 3 4 5 1 2 3 4 What technique is used to separate different cell parts? 1. 2. 3. 4. 1 microscopy cell culture cell fractionation all of the above 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Safety procedures are important when working 1. 2. 3. 4. 1 in a laboratory. in the field. with animals. all of the above 2 3 4 5 25% 1 25% 25% 2 3 25% 4 Which of the following is NOT considered a safety procedure? 1. Read all the steps in your activity before doing it. 2. If in doubt about any part of an activity, trust your instincts. 3. Follow your teacher’s instructions. 4. Follow the textbook directions exactly. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 What types of living organisms should you NOT come into contact with in your biology laboratory? 25% 25% 25% 25% 1. plants 2. organisms that cause disease 3. organisms that can be seen only with a microscope 4. animals 1 2 3 4 5 1 2 3 4 Because you may come in contact with organisms you cannot see, what safety procedure MUST be followed? 1. 2. Read over your activity. Open the windows of the laboratory. Wash your hands thoroughly after completing the activity. Do not wear long sleeves. 3. 4. 1 2 3 4 5 25% 1 25% 25% 2 3 25% 4 An important goal of a scientist is to use evidence to learn about the natural world. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 “The bird has brown spots on its wings” is an example of an inference. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 Scientists are persuaded by logical arguments that are supported by evidence. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 For a hypothesis to have value, it must be testable. _________________________ 1. True 2. False 1 2 3 4 50% 5 1 50% 2 The variable that is deliberately changed is called the responding variable. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 Field studies are used to study animals in the laboratory. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 Sometimes more than one theory is needed to explain a particular circumstance. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 The vast majority of multicellular organisms reproduce asexually. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 The smallest units that are considered to be alive are organisms. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 Paleontologists study dinosaurs and other ancient life. _________________________ 1. True 2. False 1 2 3 4 50% 5 1 50% 2 Living things can be studied at different levels of organization, from the molecular level to the largest level, the ecosystem. _________________________ 1. True 2. False 1 2 3 4 50% 5 1 50% 2 The metric system is based on multiples of 100. _________________________ 1. True 2. False 1 2 3 4 50% 5 1 50% 2 Microscopes produce images by focusing light rays or beams of cells. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 In cell fractionation, the first step is to place the cells into a centrifuge. _________________________ 1. True 50% 50% 2. False 1 2 3 4 5 1 2 In a laboratory, you are responsible for your own safety, as well as the safety of your teacher and classmates. _________________________ 1. True 2. False 1 2 3 4 50% 5 1 50% 2 Participant Scores 0 0 Participant 1 Participant 2 0 0 0 Participant 3 Participant 4 Participant 5 “The plant in Container A has five offshoots” is an example of a ____________________ observation. 1 2 3 4 5 0 of 5 The information you gather during an experiment is called your ____________________. 1 2 3 4 5 0 of 5 Based on his ____________________, Redi made a prediction that keeping flies away from meat would prevent the appearance of maggots. 1 2 3 4 5 0 of 5 The name given to the idea that life could arise from nonliving matter is _________________________. 1 2 3 4 5 0 of 5 The scientist named ____________________ finally settled the argument over whether or not life could arise from nonliving matter. 1 2 3 4 5 0 of 5 In science, a theory is a well-tested explanation that unifies a broad range of ____________________. 1 2 3 4 5 0 of 5 The science that seeks to understand the living world is called ____________________. 1 2 3 4 5 0 of 5 The combination of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes is called ____________________. 1 2 3 4 5 0 of 5 Biologists who study cactuses and African violets would be called ____________________. 1 2 3 4 5 0 of 5 A revised version of the original ____________________ system is called SI, or the International Systems of Units. 1 2 3 4 5 0 of 5 A mass of 3000 kg is equal to ____________________ t. 1 2 3 4 5 0 of 5 A specimen smaller than 0.2 micrometers must be completely dried out before being studied using a(an) ____________________ microscope. 1 2 3 4 5 0 of 5 The ____________________ microscope is generally used in high-school laboratories. 1 2 3 4 5 0 of 5 To obtain identical copies of a single cell, scientists make a ____________________. 1 2 3 4 5 0 of 5 Whenever you are working in your biology laboratory, it’s important for you to follow ____________________. 1 2 3 4 5 0 of 5 What is an inference? 1 2 3 4 5 0 of 5 A number of rats are divided into two groups: One group is fed a normal diet, whereas the other group is fed the same diet but with one necessary mineral left out. The animals receiving the normal diet remained healthy; those in the other group grew weaker. Formulate a hypothesis based on this experiment. 1 2 3 4 5 0 of 5 What is a hypothesis? 1 2 3 4 5 0 of 5 What flaw did supporters of spontaneous generation find with Spallanzani’s experimentation and his resulting conclusion that nonliving gravy did not produce living things? 1 2 3 4 5 0 of 5 Using proper equipment is necessary when testing hypotheses. How was the flask Pasteur used in testing the hypothesis of spontaneous generation essential to his success? 1 2 3 4 5 0 of 5 What is the difference between a theory and a hypothesis? 1 2 3 4 5 0 of 5 What are the differences between sexual and asexual reproduction? 1 2 3 4 5 0 of 5 Which characteristic of living things is important to the survival of a group of animals rather than an individual member of this group? Why? 1 2 3 4 5 0 of 5 What structures are included in the level of organization called groups of cells? 1 2 3 4 5 0 of 5 What are five of the levels of organization that biologists study? 1 2 3 4 5 0 of 5 What is the metric system? 1 2 3 4 5 0 of 5 Why might scientists prefer using metric units of length rather than feet or inches? 1 2 3 4 5 0 of 5 How do light microscopes differ from electron microscopes? 1 2 3 4 5 0 of 5 What does cell fractionation allow a scientist to study? 1 2 3 4 5 0 of 5 What safety precaution must you carry out after every scientific activity? 1 2 3 4 5 0 of 5 What is the goal of science? 1 2 3 4 5 0 of 5 As the result of an experiment, you reject your hypothesis. Explain why you should not consider your efforts a waste of time. 1 2 3 4 5 0 of 5 While walking outside one night, you notice that moths are staying close to a light. Think about this phenomenon and generate a hypothesis to explain why it occurs. Outline the design of a controlled experiment that would test your hypothesis. 1 2 3 4 5 0 of 5 Can a theory change over time? Explain your answer 1 2 3 4 5 0 of 5 How would you determine whether something is living or nonliving? 1 2 3 4 5 0 of 5 A biologist is doing research on a pack of wolves living in a particular section of a forest in northern Minnesota. What levels of organization could this biologist be studying? 1 2 3 4 5 0 of 5 Under what conditions would you use a compound light microscope and each type of electron microscope? 1 2 3 4 5 0 of 5 Compare and contrast two common laboratory techniques: cell culturing and cell fractionation. 1 2 3 4 5 0 of 5 Why is a universal system of measurement necessary in science? What are some units of the system used now, and what do they measure? 1 2 3 4 5 0 of 5 Identify five things you might encounter in the laboratory that require you to practice safety precautions. 1 2 3 4 5 0 of 5