Scorpion muscle contraction is fueled directly by energy derived from
a. lactic acid.
b. ADP.
c. ATP.
d. ethanol.
c
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Specimens can be observed at the atomic level using a(n)
A. scanning electron microscope. B. transmission electron microscope. C. atomic force microscope. D. All of the choices are correct. E. None of the choices is correct.
Which health problem is most likely to contribute to erectile dysfunction?
a. Circulatory problems b. Osteoarthritis c. Obesity d. Pancreatitis e. Chronic back pain
Weeks of depressing work in the botany lab have culminated in yet another unsuccessful attempt to germinate your seeds. You are down to three batches of carefully packed seeds (you started with ten), and not one seedling to show for your work. Head in hands, you consult with a colleague from the California lab who sent the seeds earlier in the year. He makes a crazy recommendation but you brush it off because this colleague always has wild ideas. Later, in desperation, you decide to do it. Following his instructions carefully, you set fire to the seed packet and then put out the controlled blaze you have created. Six weeks later, you are carefully tending the seedlings and berating yourself for not having listened to him sooner. Of course! Which biome are these seeds from after all?
a. arctic tundra b. boreal forest c. chaparral d. temperate forest
The effect of insulin is to
a. cause the hydrolysis of glucagon. b. prevent cells from taking up glucose. c. cause the hydrolysis of glucose. d. cause cells to take in glucose. e. decrease cellular respiration