Bio Test 2

You suggest that water could accelerate the growth of bread mold. This is an (a):

Which of the following is not considered a safety procedure:
A. follow your teachers instructions
B. follow textbook's direction exactly
C. if in doubt of any part, trust instincts
D. Read all steps of activity before doing it.

Which is a valid hypothesis for why a plant is dying?
A. The plant is receiving too much sunlight
B. The plant is not being watered enough
C. The plant is being watered too much
D. all of the above

Information gathered from a observing a plant grow 3 cm. over a two week period results in:

A controlled experiment allows the scientists to isolate and test:

T/F. In a normal distribution, 58% of the measurements will be within one standard deviation of the mean.
True False

If the fan speed is increased, then the wind will make more electricity. This is a conclusion.

The variable that is deliberately changes is called the dependent variable.

A number of rats are divided into two groups: One group is fed a normal diet, whereas the other group is in the same diet but with one necessary mineral left out. The animals receiving the original diet remained healthy, those in the other group grew weaker. What is the independent variable in this study?

Why is a universal system of measurements necessary in science?