__________ are the structural and functional units of the nervous system
a. Neurons
b. Brains
c. Nerves
d. Dendrites
A
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Alexander Fleming kept finding mold contamination that was killing his bacterial cultures. This observation eventually lead to the development of the antibiotic penicillin. Why would a fungus produce a compound that is selectively toxic to bacteria?
A. Fungi eat bacteria. B. Fungi are killed by bacterial toxins. C. Fungi compete with bacteria for resources. D. Killing bacteria is an accident. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about fungi and bacteria? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
All of the following hormones are synthesized from cholesterol except:a
cortisol. b. estrogen. c. progesterone. d. testosterone. e. prostaglandin.
Which of the following statements about plant hormones is false?
a. They are organic compounds that act as a highly specific chemical signal. b. They are effective in extremely small amounts. c. They elicit many different responses. d. They may stimulate a response at one concentration and inhibit that same response at a different concentration. e. They currently can be categorized into seven major classes.
Resource partitioning can often be seen in similar species that occupy the same geographic area. These species avoid competition by living in different portions of the habitat or by utilizing different food or other resources. They are referred to as being ________.
A. exploitative B. competitive C. allopatric D. sympatric E. fundamental