BIOL133 K006 MITOSIS LAB

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BIOL133 K006 MITOSIS LAB

SPRING WITH COMPLETE

SOLUTION

Question :Consider this hypothesis: drinking echinacea tea reduces the duration and severity of colds. Which statement is the best prediction based on this hypothesis?

• If cold sufferers drink echinacea tea, then they will feel

better sooner.

• If cold sufferers drink echinacea tea, then a tea

ingredient will destroy the cold viruses.

• If cold sufferers don't drink echinacea tea, then they

will catch a cold very easily.

Correct answer:A. If cold sufferers drink echinacea tea,

then they will feel better sooner.

Question :A researcher hypothesized that tributyltin (an

additive in boat paint) causes reproductive defects in marine snails developing in the water. In an experiment testing the effects of tributyltin on developing snails, which condition should be used as a control?

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• Snails developing in a water tank are exposed to

extremely low levels of tributyltin.

• Snails developing in a water are exposed to boat paint

without tributyltin.

• Developing snails are kept in a dry tank to avoid

exposure to contaminated water.

Correct answer:B. Snails developing in a water are

exposed to boat paint without tributyltin.

Question :Experimental subjects are given a pill to test its

effectiveness on reducing the duration of a cold. How should the control group be treated?

• Do nothing with the control group
• Give the control group 2 pills instead of one.
• Give the control group a pill that does not affect the

duration of colds.

• Let the control group choose whether or not to take

any pills.

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Correct answer:B. Give the control group 2 pills instead

of one. D. Let the control group choose whether or not to take any pills.

Question :When graphing data, what scientific

information do scientists plot on the X-axis?

• Independent variable

Correct answer:A. Independent variable

Question :What would a news report on CNN that

describes recently published research on a new treatment for colds be an example of?

• Anecdote
• Primary source
• Secondary source
• Peer-reviewed report

Correct answer:C. Secondary source

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Question :What would be the most trustworthy source of

scientific information?

• Anecdotal evidence
• Paid advertisements
• Peer reviewed research publications
• Science reports in newspaper and Tv

Correct answer:C. Peer reviewed research publications

Question :How did Barry Marshall test the hypothesis that

• pylori causes stomach ulcers?
• He surveyed people with stomach ulcers about the

acidity of their food

• He ingested live H. Pylori and developed acute

stomach pain

• He interviewed physicians who performed surgeries on

ulcer patients.

• He fed spicy foods to lab rats to eliminate an alternate

hypothesis