The filaments typically grow as an extensive mesh
called a __________. Fill in the blank(s) with the appropriate word(s).
Answer: mycelium
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Male hummingbirds flash a patch of iridescent feathers on their neck called the gorget. This behavior makes them very visible. Why advertise their presence to a predator?
A. Hummingbirds are so fast that predation is not a large factor for them. B. Predators cannot see colors so are not alerted. C. The benefits of defending a territory exceed the costs of predation. D. This is an example of a maladaptive behavior that decreases overall fitness. 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 the tradeoff of being visible to potential mates and predators? What other information is related to the question? Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection: 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?
Early primates arose
a. in tropical forests of East Africa. b. in temperate savanna and grassland habitats. c. near rivers, lakes, and streams in the East African Rift Valley. d. in caves with abundant supplies of insects. e. in all of these places.
Which of the following will increase the speed of an action potential moving down an axon? I) Action potentials move faster in larger diameter axons. II) Action potentials move faster in axons lacking potassium ion channels
III) Action potentials move faster in myelinated axons. A) only I and II B) only II and III C) only I and III D) I, II, and III
Point mutations can occur in any given cell type, but they mostly affect only that one cell and cells produced by it. What cell type, if mutated, would allow the mutation to be passed on to family members for generations?
A) skin cells B) glial cells, such as those that produce a myelin sheath C) white blood cells D) gametes, such as an egg or sperm