Blue crabs have specialized appendages called ________ that are utilized for additional locomotion
a. pleopods
b. telson
c. swimmerets
d. chelipods
c
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Bioassays can be used to
(a) test new drugs. (b) determine the effectiveness of new fertilizers and herbicides. (c) measure the effects their waste discharges have on aquatic organisms. (d) do all of these choices.
You make a knockout of a gene involved in neurological development, and find that the mice have malformed semicircular canals. Instead of being orthogonal (at right angles) to each other, they are parallel. What aberrant behavior might you see in these mice?
A. overeating B. falling over C. not startling to sudden noise D. unable to respond to a call to locate another mouse E. low muscle tone 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 semicircular canals? 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?
One plasma cell will secrete antibodies of various classes, but the antibodies will all have the same specificity.
Answer the following statement true (T) or false (F)
Butter, which is made from milk fat, tends to be harder at room temperature than most margarines. If you wanted to make a butter that is softer at room temperature, you should consider:
A) adding more than three fatty acid chains to the triglycerides. B) saturating the fatty acid chains. C) making the fatty acid chains longer. D) making fatty acid chains with fewer kinks. E) creating more double bonds in the fatty acid chains.