What is an example of an osmoregulator?
a. Jellyfish
b. Fish
c. Sea anemones
d. Tunicates
b
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To which subtype of muscle tissue does a fiber with cross-striations and many peripherally located nuclei belong?
(a) skeletal. (b) cardiac. (c) smooth. (d) none of the above.
Imagine you conduct a parabiosis experiment with two strains of mice, one of which lacks a functional leptin gene (ob strain) while the other lacks a functional receptor for this hormone (db strain). Which of the following outcomes would you observe?
A. no weight change in the ob mouse B. no weight change in the db mouse C. increased body weight in the ob mouse D. decreased body weight in the ob mouse E. decreased body weight in the db mouse
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?
What will be an ideal response?
Which of the following regulates the fluidity of the plasma membrane?
a. Temperature b. Cholesterol c. Carbohydrate d. Protein