Osteoarthritis is more common in older adults due to ____
a. a long-term nutritional deficiency
b. a lifetime of jarring joints
c. repeatedly breaking tendons
d. gradual loss of bone mass
e. an autoimmune disorder
ANSWER: b
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A farmer is growing glyphosate-resistant transgenic soybeans. What are you unlikely to see in those fields during the growing season?
A. A tilling machine B. Caterpillars C. Field mice D. Irrigation 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 transgenic crops? 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?
At night, faint objects are best seen when not looked at directly. What is the basis of this phenomenon?
A. Rhodopsin is transported away from the fovea at night. B. Cis-retinal builds up in the fovea at night, and is degraded during the day. C. Cone photoreceptors are most sensitive in dim light, and few cones are present in the fovea. D. Rod photoreceptors are most sensitive in dim light, and few rods are present in the fovea. 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 vision? 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?
A gene that contains introns can be made shorter (but remain functional) for genetic engineering purposes by using _____
A) a restriction enzyme (endonuclease) to cut the gene into shorter pieces B) reverse transcriptase to reconstruct the gene from its mRNA C) DNA polymerase to reconstruct the gene from its polypeptide product D) DNA ligase to put together fragments of the DNA that code for a particular polypeptide
During which phase of mitosis do the chromosomes line up on a plane equidistant from the two spindle poles?
A) prophase B) metaphase C) anaphase D) telophase