In which of the following locations would you be most likely to find a species of Euglena?
A. Garden soil
B. Intestine of humans
C. Pond
D. Rumen of a dairy cow
Answer: C
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Your physician has requested a test that involves radioactive iodine. This material will be injected and monitored to watch for normal rates of uptake. Test results reveal that the rate of uptake is abnormal. Which hormone would you predict to be outside of a homeostatic range?
A. Cortisol B. Growth hormone C. Insulin D. Thyroid hormone E. Atrial natriuretic peptide
The half-life of 14C is 5,730 years. If, after 11,460 years, an organism dies, what percent of the initial 14C will still be present in the organism's bones?
A. 75% B. 0% C. 25% D. 100% E. 50%
Closely linked genes nearly always end up
a. crossing over. b. assorting independently. c. in the same gamete. d. segregated during meiosis. e. inverted.
Artificial electrical stimulation of a human's capsaicin-sensitive neurons would likely produce the sensation of _____
A) cold temperature B) hot temperature C) tactile stimulus D) deep pressure