Which of these animals is correctly matched with its type of skeleton?
A) Mayfly/hydroskeleton
B) Lobster/exoskeleton
C) Bird/exoskeleton
D) Earthworm/endoskeleton
E) Shark/hydroskeleton
B
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How did the cessation of crossing-over contribute to the disparity between the X and Y chromosomes? What will be an ideal response?
In a food chain with four trophic levels, what would be the energy in the top trophic level if the energy contained in the primary producer level is 40,000 kcal/m2/yr? Assume a trophic level transfer efficiency of 10%.
A. 4,000 kcal/m2/yr B. 400 kcal/m2/yr C. 40 kcal/m2/yr D. 4 kcal/m2/yr E. 0.4 kcal/m2/yr 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 energy flow? 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?
Which neurotransmitters are involved in Parkinson's disease?
a. dopamine and norepinephrine b. serotonin and acetylcholine c. dopamine and serotonin d. norepinephrine and GABA e. serotonin and norepinephrine
Which of the following is NOT a limitation of nutritional assessments?
a. A long time may elapse between the initial development of poor nutritional health and the first clinical evidence of a problem. b. Clinical signs and symptoms of nutritional deficiencies often are not very specific. c. Often it is not possible to separate the best nutritional state from one that is slightly jeopardized. d. Most nutrition assessments are time-consuming, costly, and do not provide valuable information.