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| All the organisms on campus make up a) ecosystem b) community c) population d)an experimental group e)domain |
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| Which of the following best demonstrates the unity among all organisms? a)identical DNA sequences b)descent with modification c)the structure and function of DNA d)natural selection e)emergent properties |
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| A controlled experiment is one that a)proceeds slowly enough that a scientist can make careful records of results b)tests experimental and control groups in parallel c)is repeated many times to make sure the results are accurate d)keeps all variables constant e)is supervised by an experienced scientist |
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| Which of the following statements best distinguishes hypothesis from theories in science? a) theories are hypothesis that have been proved b)hypotheses are guesses, theories are correct answers c)Hypotheses are usually relatively narrow in scope; theories have broad explanatory power d)Hypotheses and theories are essentially the same thing e)Theories are proved true; Hypotheses are often falsified |
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| Which of the following is an example of qualitative data? a)the temp decreased from 20 degrees C to 15 degrees C b) the plants height is 25 cm c)the fish swam in a zigzag motion d)the six pairs of robins hatched and average of 3 chicks e)The contents of the stomach are mixed every 20 seconds |
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| Which of the following best describes the logic of scientific inquiry? a)if I generate a testable hypothesis, tests and observations will support it b)if my prediction is correct, it will lead to a testable hypothesis c)if my observations are accurate, they will support my hypothesis d)If my hypothesis is correct, I can expect certain results e)If my experiments are set up right, they will lead to a testable hypothesis |
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7.c
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1. in what way to members of a eukaryotic cell vary
2. which of the following factors would tend to increase membrane fluidity?
a)a greater portion of unsaturated phospholipds
b)a greater portion of saturated phospholipids
c)lower temperature
3. phosphorylation cascades involving a series of protein kinases are useful for cellular signal transduction because |
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1.certain proteins are unique to each kind of membrane
2.a
3.they amplify the original signal manyfold |
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| 1. the reactivity of an atom arises from |
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| the existence of unpaired electrons in the valence shell |
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| 2. which of the following statemens correctly describes any chemical reaction that has reached equilibrium? (just say what it means) |
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| the rates of the forward and reverse reaction are equal |
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| 3. we can be sure that a mole of table sugar and a mole of vitamin c are equal in their |
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