Researchers surgically fuse two of the three ossicles in the inner ear of a mouse, effectively leaving two functional, linked ossicles in place of three. When the mouse's hearing is tested, what outcome would be expected? The mouse would be _____
A) more sensitive to sound, but only in the low-frequency range
B) more sensitive to sound, but only in the high-frequency range
C) more sensitive to sound in general
D) less sensitive to sound in general
Answer: D
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Media that can be used for the isolation of Mycoplasma include:
a. Thayer-Martin agar with vitamin K. b. 5% sheep blood and IsoVitaleX. c. beef or soybean protein with serum and fresh yeast extract. d. hemin and nicotina-mide-adenine-dinucleotide (NAD) sup-plements.
A controlled experiment is one in which ________
A) there are at least two groups, one differing from the other by two or more variables B) the experiment is repeated many times to ensure that the results are accurate C) the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data D) there are at least two groups, one of which does not receive the experimental treatment
Evidence that parthenogenic whiptail lizards are derived from sexually reproducing ancestors includes _____
A) the requirement for male-like behaviors in some females before their partners will ovulate B) the development and then regression of testes prior to sexual maturation C) the observation that all of the offspring are haploid D) the persistence of a vestigial penis among some of the females
Which of the following cells is a component of the body's first line defense?
A. monocyte B. goblet cell C. NK cell D. neutrophil E. microglial cells