Question 1

You look outside and realize that your grass needs to be mowed. You pick up the container of gasoline and see that you have approximately a third of a gallon left. You hypothesize that this amount will be enough to mow your entire lawn. Unfortunately, half way through mowing your lawn you run out of gasoline. You grumble and think to yourself that the next time you mow the lawn, you hypothesize that you will need to have at least two-thirds of a gallon of gasoline available. How did the results of your lawn-mowing experience influence the validity of your new hypothesis for future gasoline needs?

Accepted Answer

A)   Your prediction of future gas needs is based on experimental data and therefore increases the validity of your hypothesis.
B)   Your prediction proved that your hypothesis is correct.
C)   Your hypothesis was supported by trial and error. One more trial added to your data set.
D)   The hypothesis was invalidated by your experimental evidence.E) A) and D)
F) B) and C)

Question 2

You have been assigned to analyze some extraterrestrial material recently collected from Mars. After examining a sample using a microscope you jump up excitedly and shout to your colleagues that you have confirmed the existence of life on Mars. One of your colleagues takes a look at your sample and remarks that all he sees is a single-celled "blob" with little internal structure. Assuming that life on Mars can be classified into similar domains and kingdoms as Earth, to which domain does your "blob" belong?

Accepted Answer

A)   Fungi
B)   Protista
C)   Animalia
D)   ArchaeaE) B) and C)
F) A) and B)

Question 3

In California, a species of salamanders were geographically separated over time. The group that lived in southern California relied heavily on large gold blotches on their skin that helped to camouflage them from predators. The group that lived along the coast adopted a color pattern that mimicked a poisonous, colorful newt common to that area. Instead of being camouflaged, these salamanders advertised their colors. What type of selection process has occurred over time?

Accepted Answer

A)   artificial selection
B)   experimental selection
C)   theoretical selection
D)   natural selectionE) A) and B)
F) B) and C)

Question 4

A plant and animal would be most similar at which level of organization?

Accepted Answer

A)   Tissue
B)   Organ
C)   Organelle
D)   CellE) All of the above
F) A) and C)

Question 5

A dental student wants to test if fluoride is an effective additive against tooth decay. The student studies tooth decay in a population of people who live in neighborhoods supplied with fluoridated water. What would be an effective control group to ask this question?

Accepted Answer

A)   Individuals with access to differing amounts of fluoride in the water.
B)   Individuals with access to fluoridated water.
C)   Individuals who have fluoride added to their toothpaste but not their water.
D)   Individuals with access to water with no fluoride added.E) None of the above
F) All of the above

Question 6

Cell theory is one of the foundations of biology. What are the tenants of the cell theory? Check all that apply.

Accepted Answer

A)   All organisms are made up of more than one cell.
B)   All cells have the ability to move.
C)   Cells carry genetic material passed to daughter cells during cellular division.
D)   Cells arise from other cells through the process of cell division.
E)   Organisms are formed through spontaneous generationF)  All living organisms consist of cellsG) C) and E)
H) All of the above

Exam 1: The Science of Biology

Cell theory is one of the foundations of biology. What are the tenants of the cell theory? Check all that apply.

Correct Answer
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Correct Answer
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Correct Answer
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A plant and animal would be most similar at which level of organization?

Correct Answer
verified

Correct Answer
verified

A dental student wants to test if fluoride is an effective additive against tooth decay. The student studies tooth decay in a population of people who live in neighborhoods supplied with fluoridated water. What would be an effective control group to ask this question?

Correct Answer
verified

Exam 1: The Science of Biology

Cell theory is one of the foundations of biology. What are the tenants of the cell theory? Check all that apply.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A plant and animal would be most similar at which level of organization?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A dental student wants to test if fluoride is an effective additive against tooth decay. The student studies tooth decay in a population of people who live in neighborhoods supplied with fluoridated water. What would be an effective control group to ask this question?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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