. The word "animalcule" was coined by
A. Pasteur.
B. van Leeuwenhoek.
C. Redi.
D. Tyndall.
B
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Size and shape may allow one to differentiate between a bacterium, fungus, or protozoan
Indicate whether this statement is true or false.
What difference in axonal signaling determines whether we experience a mild or a strong sensation?
A. amplitude of action potentials B. frequency of action potentials C. action potential threshold D. conduction speed E. amount of neurotransmitter released per vesicle 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 axonal signaling? 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?
Why is a digestive system with a single digestive opening inefficient?
What will be an ideal response?
Lake Victoria is famous for its variety of cichlid fishes. In fact, they offer the most diverse assembly of vertebrates presently known to science. One trait that scientists have focused on as one possible reason for their adaptability is
A. a second set of scales that lie beneath the top outermost scales. B. gill arches that are not covered by an operculum, which prevents hiding places for gill parasites. C. digestive tracts that are able to process most substrates, which has eliminated the need for feeding specialization. D. ability to change color in relationship to their environment. E. a second set of jaws in their throats.