Which of the following is not a characteristic of all plants?
A. They are autotrophs.
B. They are eukaryotes.
C. They are multicellular organisms.
D. They are heterotrophs.
E. They carry out photosynthesis.
D. They are heterotrophs.
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A behavior that benefits others at a cost to oneself is
A. cooperation. B. altruism. C. benevolence. D. symbiosis. E. All of these choices are correct.
You explain to your study group that a hypothesis is:
A. constant over time. B. a proposition that will be true and fits the known facts. C. an explanation that accounts for careful observations. D. a theory.
Which of the following is the earliest step in blood filtration in the human body?
a. Water is collected in larger tubules and leaves the kidney in the ureter. b. Blood passes through the tubules in the glomerulus. c. Blood comes in contact with the nephrons. d. Water, required ions, and useful compounds are absorbed into the capillaries.
Inoculating loops and needles are typically sterilized by holding in the flame of a Bunsen burner until red-hot. Alternatively,
What will be an ideal response?