Biology, 18.11.2020 20:10 sharonbullock9558
A group of biology students tests the growth of bacteria under different conditions. The students apply the same amount of bacteria to identical Petri dishes enriched with nutrients, then place each plate at a different temperature. The bacteria are allowed to grow for three days, after which the number of bacterial colonies on each plate is counted. What is the dependent variable in this experiment?
A.
the nutrient type present in the Petri dishes
B.
the number of bacterial colonies after three days
C.
the temperature at which the colonies grew
D.
the time of day that the experiment is performed
Answers: 1
Biology, 22.06.2019 04:00, smooth5471
The transport tubes from food came down the plant are called?
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Biology, 22.06.2019 07:00, thomasalmo2014
Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs
Answers: 1
Biology, 22.06.2019 10:00, AM28
Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
Answers: 2
A group of biology students tests the growth of bacteria under different conditions. The students ap...
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