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BIOS 100 Final 4 Test
- You and your family recently went on vacation to a cabin up north. You brought your beta
fish, Killer, with you so that she wouldn't be lonely at home. When you got there, you added more water to her bowl (the water in the cabin comes from a well on the property). By the end of the day, you noticed that Killer was huddling close to the bottom of the bowl and rarely moving, unlike her normal actively swimming activities.You wondered why and came up with three possible hypotheses: (1) It is a new environment and she is scared of what she sees outside the bowl, (2) the temperature is significantly colder here and it is slowing her down, (3) there is something in the well water that is causing her to be sluggish. You chose to test one of the hypotheses by bringing well water back home with you. On test day 1, you place Killer in a bowl of regular tap water from home and observe her activity level for the day. On test day 2, you place her in well water and observe her activity level for the day.
Which hypothesis were you testing?
a) 1 b) 2 c) 3:
Answer c) 3
- You and your family recently went on vacation to a cabin up north. You brought your beta
fish, Killer, with you so that she wouldn't be lonely at home. When you got there, you added more water to her bowl (the water in the cabin comes from a well on the property). By the end of the day, you noticed that Killer was huddling close to the bottom of the bowl and rarely moving, unlike her normal actively swimming activities.You wondered why and came up with three possible hypotheses: (1) It is a new environment and she is scared of what she sees outside the bowl, (2) the temperature is significantly colder here and it is slowing her down, (3) there is something in the well water that is causing her to be sluggish. You chose to test one of the hypotheses by bringing well water back home with you. On test day 1, you place Killer in a bowl of regular tap water from home and observe her activity level for the day. On test day 2, you place her in well water and observe her activity level for the day.Which of the following results would best support your hypothesis?
a) She is equally active on both test days
b) She is more active on test day 1 than on test day 2
c) She is more active on test day 2 than on test day 1:
Answer b) She is more active on test day 1 than on test day 2
- You and your family recently went on vacation to a cabin up north. You brought your beta
fish, Killer, with you so that she wouldn't be lonely at home. When you got there, you added 1 / 4
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more water to her bowl (the water in the cabin comes from a well on the property). By the end of the day, you noticed that Killer was huddling close to the bottom of the bowl and rarely moving, unlike her normal actively swimming activities.You wondered why and came up with three possible hypotheses: (1) It is a new environment and she is scared of what she sees outside the bowl, (2) the temperature is significantly colder here and it is slowing her down, (3) there is something in the well water that is causing her to be sluggish. You chose to test one of the hypotheses by bringing well water back home with you. On test day 1, you place Killer in a bowl of regular tap water from home and observe her activity level for the day. On test day 2, you place her in well water and observe her activity level for the day.What result would best show that your hypothesis is not supported?
a) She is equally active on both test days
b) She is more active on test day 1 than on test day 2:
Answer a) She is equally active on both test days
- You and your family recently went on vacation to a cabin up north. You brought your beta
fish, Killer, with you so that she wouldn't be lonely at home. When you got there, you added more water to her bowl (the water in the cabin comes from a well on the property). By the end of the day, you noticed that Killer was huddling close to the bottom of the bowl and rarely moving, unlike her normal actively swimming activities.You wondered why and came up with three possible hypotheses: (1) It is a new environment and she is scared of what she sees outside the bowl, (2) the temperature is significantly colder here and it is slowing her down, (3) there is something in the well water that is causing her to be sluggish. You chose to test one of the hypotheses by bringing well water back home with you. On test day 1, you place Killer in a bowl of regular tap water from home and observe her activity level for the day. On test day 2, you place her in well water and observe her activity level for the day.What is your dependent variable?
- the type of water
b) Killer's activity level
c) Killer:
Answer b) Killer's activity level
- A lab had the following hypothesis: Amoeboid cell movements are caused by the 2 / 4
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cytoskeleton. They performed this experiment with these results.
Amoeba proteus is a single-celled eukaryote that moved by extending its membrane.
Cytochalasin B is a drug that blocks the formation of micro filaments part of the cytoskeleton.One amoeba is treated with cytochalasin B and there is a control that is injected but without the drug.The results are where the treated amoeba is alive but rounds up and does not move and the control amoeba continues to move.
What is the independent variable?
a) Whether or not the Amoeba was injected or not
b) The shape of the Amoeba
c) Presence or absence of cytoskeleton
d) Whether or not the Amoeba moves or not:
Answer c) Presence or absence of cy- toskeleton
- A lab had the following hypothesis: Amoeboid cell movements are caused by the
cytoskeleton. They performed this experiment with these results.
Amoeba proteus is a single-celled eukaryote that moved by extending its membrane.
Cytochalasin B is a drug that blocks the formation of micro filaments part of the cytoskeleton.One amoeba is treated with cytochalasin B and there is a control that is injected but without the drug.The results are where the treated amoeba is alive but rounds up and does not move and the control amoeba continues to move.
What would be your conclusion?
a) Amoeboid cell movements have no effect on the microfilaments of the cytoskeleton.
b) Microfilaments of the cytoskeleton have no effect on amoeboid cell move-ment.
c) Amoeboid cell movements cause changes in the microfilaments of the cytoskeleton.
d) Microfilaments of the cytoskeleton are needed for amoeboid cell move- ment.:
Answer d) Microfilaments of the cytoskeleton are needed for amoeboid cell move- ment.
- A study published in Heart, by Dr. David S. Krantz (2009), entitled "Psy- chotropic
medication use and risk of adverse cardiovascular events in women with suspected coronary artery disease" suggests that women with coronary artery disease (CAD) who report taking antidepressant or anti-anxiety med- ications have a higher risk of having an adverse cardiovascular event (e.g., heart attack or stroke) than those women not on these medications.To show this, the authors chose a sample of women with CAD and measured the rate of adverse cardiovascular events and the number of them on antidepressant or anti-anxiety medications and looked for an overlap of the two criteria. 3 / 4
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This study would be considered...
a) An experimental study
b) A correlational study
c) An opinion-dependent study
d) An example of anecdotal evidence:
Answer b) A correlational study
- A study published in Heart, by Dr. David S. Krantz (2009), entitled "Psy- chotropic
medication use and risk of adverse cardiovascular events in women with suspected coronary artery disease" suggests that women with coronary artery disease (CAD) who report taking antidepressant or anti-anxiety med- ications have a higher risk of having an adverse cardiovascular event (e.g., heart attack or stroke) than those women not on these medications.To show this, the authors chose a sample of women with CAD and measured the rate of adverse cardiovascular events and the number of them on antidepressant or anti-anxiety medications and looked for an overlap of the two criteria.
The authors make the following statement: "We must emphasize that this is a correlational study and not a clinical trial, so this study's results are not definitive." What are the authors suggesting?
a) Due to low sample size, we cannot draw a definitive conclusion that anti- depressants and
anti-anxiety medications cause heart attack and/or stroke in women with CAD.
b) Because we are relying on opinions, the study is not scientific and therefore cannot draw any
scientific claims.
c) Because no actual experiment was run, the evidence is purely correlational and correlation
does not necessarily equate to causation.
d) Because no actual data was gathered, we cannot use it to support our claim that
antidepressants and anti-anxiety medications cause heart attack and/or stroke in women with
CAD.:
Answer c) Because no actual experiment was run, the evidence is purely correlational and correlation does not necessarily equate to causation.
- Which of the following would be considered a primary source?
a) A newspaper article about a species of bear that could become extinct in the next ten
years
b) A review article in a peer-reviewed journal about MMR vaccines
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