Which of the following lacks sufficient penetrating power for bulk sterilization?
A. Gamma radiation
B. Ultraviolet (UV) radiation at 260 nm
C. Alpha and beta particles
D. X rays
Answer: B
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You observe variation in the auditory signal that males use to attract females. Which of the following would be true if the signal is an accurate indicator of male quality?
a. The highest-quality males have the most common form of the signal. b. The highest-quality males have the most extreme form of the signal. c. Male quality is unrelated to signal variation. d. Only the highest-quality females prefer the highest-quality males. e. Females will use multiple signals to identify the highest-quality males.
A protozoan may possess any of the following except:
A) cilia. B) flagella. C) hyphae. D) pseudopodia.
Which hormone causes less sodium and less water to be excreted in the urine?
a. ADH b. angiotensin c. aldosterone d. erythropoietin e. insulin
Predict the outcome of protein synthesis if a gene undergoes a mutation in its anticodon region where a charged tRNA recognizes a nonsense mutation.
A. Transcription would not continue but translation would continue. B. Transcription and translation both would not continue. C. Transcription and translation both would continue. D. Transcription would continue but translation would not continue.