The important feature of all cells that react to a
specific hormone is (are) the
a. type of blood supply they receive.
b. proximity of the endocrine gland.
c. presence of an appropriate receptor
molecule.
d. characteristics of their plasma membranes.
e. presence of specific genes responsive to the
hormone.
C
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Which of the following is incorrect about experimental variables?
A. In the control experiment, the variable is not altered. B. The independent variable is the one the researcher is able to manipulate. C. When graphing data, the independent variable is always presented on the y-axis. D. The dependent variable is what the investigator measures. E. A valid experiment can only have one independent variable.
F. F. Blackman performed experiments to investigate the effects of various factors on photosynthesis. In one of his experiments, Blackman found that if light intensity was low, photosynthesis could be accelerated by increasing the amount of light, but not by increasing the temperature or carbon dioxide concentration. What can you conclude from this specific experiment?
A. Photosynthesis generates oxygen. B. Carbon dioxide is important for photosynthesis. C. High temperatures are important for photosynthesis. D. Light is important for photosynthesis.
An essential nutrient is one that
A) is used for energy storage. B) is required in large amounts. C) can be found only in animal products. D) cannot be made by the organism.
A (colony/plaque/prophage) is a clear zone on a bacterial lawn where cells have been killed by the activity of a bacteriophage
What will be an ideal response?