click the link ontop to read the passage for this question. the passage will open on a second screen. arrange the screens so you can see both at the same time.
1)which statement best summarizes the viewpoint of scientist 2?
a)there is no doubt that extremophiles came after mesophiles.
b)the fossil record does not clearly answer the question of how extremophiles originated.
c)do not thrive in the hot vents at yellowstone, but mesophiles do.
d)extremophiles were recently found underwater.
2)the student describes her research project as one experiment. is this an accurate description?
a)yes, because the student is studying the factors that affect plant growth in all three pots.
b)yes, because the student is studying all three plants at the same time.
c)no, because the student is performing two different experiments on the same dependent variable simultaneously using the same control but two different independent variables.
d)no, because the student is performing three different experiments on the same dependent variable simultaneously using three different independent variables.
3)imagine that a new piece of evidence is uncovered that shows that mesophile-like organisms first appeared a long time ago, but they appeared in very extreme environments. how might this evidence impact scientist 1’s viewpoint?
a)it could cause scientist 1 to rethink the idea that extremophiles were among the first organisms on earth.
b)it could make scientist 1 stop considering a search for extremophiles in underwater vents.
c)it would have little or no impact on scientist 1, but it would affect scientist 2.
d)it would support scientist 1’s viewpoint about extremophiles on earth.
4)which piece of evidence do you think scientist 2 would need to see to agree with scientist 1?
fossils of extremophiles from underwater
fossils that prove mesophiles can also live in extreme environments
fossils that show mesophiles were among the first living organisms on earth
fossils that prove mesophiles did not appear until many years after extremophiles
5)if another student wanted to test a variable that was not studied in this experiment, which of the following should he do next? he should test how plant growth and health is affected by
the amount of soil that is provided to a plant
the amount of water that is provided to a plant
the amount of sunlight that is provided to a plant
the growth rate of the plant
6)the student concluded that all plants need water and sunlight to grow and stay healthy. is this an acceptable conclusion for the student to make based on this experiment?
yes. based on this experiment, the student can conclude that all plants need water and sunlight to grow because only the plant that received water and sunlight grew and stayed healthy.
yes. based on this experiment, the student can conclude that all plants need water and sunlight to grow because all three plants received water, sunlight, or both and all three grew at the beginning of the experiment.
no. based on this experiment, the student can conclude that plants can grow without water and sunlight.
no. based on this experiment, the student can conclude only that this type of bean plant needs water and sunlight to grow.
7)was the student’s hypothesis supported by the experiment?
yes, because each plant initially sprouted.
yes, because only the plant that received both water and sunlight was healthy at the end of the experiment.
no, because each plant initially sprouted.
no, because the student only tested one type of plant.
8)which of the following represents a dependent variable in this experiment?
the amount of water provided to each plant
the growth of each plant
the amount of sunlight provided to each plant
the amount of soil provided to each plant