Background extinction rates once eliminated seven to eight species per year

a. True
b. False


ANSWER: True

Biology & Microbiology

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Answer the question using the accompanying figure. During metamorphosis of a tadpole, TSH is active at ____

a. A b. B c. C d. B and C e. A, B, and C

Biology & Microbiology

Ivan Pavlov is most closely associated with

A) breeding experiments with pigeons. B) operant conditioning (trial-and-error learning). C) insight learning. D) classical conditioning with dogs. E) imprinting experiments with ducks.

Biology & Microbiology

Why do plants growing outside often have shorter and thicker stems than plants of the same species grown indoors?  

A.  The plants inside have a more constant source of light and therefore a higher level of phytochrome. B.  The outdoor plants are subject to mechanical stresses and they are exhibiting a thigmomorphogenic response. C.  The outdoor plants are subject to touch by animals and other plants and are exhibiting a thigmotropic response. D.  The indoor plants have elevated levels of auxin and are therefore taller than the outside plants. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about growth of protected vs. exposed plants? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach 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?  

Biology & Microbiology

Which antibody makes up about 80% of the antibodies in the blood?

a. IgA b. IgD c. IgE d. IgG e. IgM

Biology & Microbiology