If you break your leg, the bone heals by forming a thickened area around the outside of the bone. Over a period of time, this thickened area:
B) is eaten away by osteoclasts.
C) is digested by enzymes secreted by the muscles.
D) forms new tendons, ligaments, and/or muscles.
E) moves to the skin surface and is shed as dead skin.
Answer: B) is eaten away by osteoclasts.
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Phil has chronic ulcers, he has been taking acid blockers and drinking vast amounts of liquid antacids. These help relieve the symptoms but he still suffers from ulcers. What would be the best course of action to treat the source of his ulcers?
A. Taking several different antacids. B. Increasing the dosage of acid blockers. C. Taking a course of antibiotics. D. Reducing the stress in his daily life. E. Changing his diet to include more fiber. 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 ulcers? How does it relate to the question? · 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?
In Tilman's experiments with diatoms, what was the outcome when the two species competed for silica?
A) Both coexisted. B) Both survived several years but one eventually won out. C) One outcompeted the other to extinction. D) Both died.
Raf is a ________ protein kinase that resides at the head of the _______.
a) serine/threonine. glucagon cascade b) serine/threonine, apoptosis cascade c) tyrosine, glucagon cascade d) serine/threonine, MAP kinase cascade e) tyrosine, MAP kinase cascade
The nucleus, an organelle found in eukaryotic cells, confines the __________, keeping them separated from other components of the cell
(a) lysosomes (b) chromosomes (c) peroxisomes (d) ribosomes