In the accompanying figure, the basilar membrane is labeled as:
a. 4.
b. 5.
c. 6.
d. 7.
e. 8.
b
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Short index fingers (shorter than the ring finger) are
dominant in males and recessive in females, whereas long index fingers (as long as or longer than ring fingers) are dominant in females and recessive in males. Give the F2 genotype and phenotype resulting from the cross of a male with long index fingers with a female with short index fingers. What will be an ideal response?
A population of rabbits introduced to an island grows rapidly for a few years, and then growth slows and stabilizes. The population becomes stable because:
A) environmental resistance declined. B) the intrinsic rate of increase has declined. C) immigration was reduced. D) the carrying capacity has been reached.
Which type of membrane transport is most important for nutrient acquisition in nutrient poor environments?
A. Facilitated diffusion through channel proteins B. Facilitated diffusion through membrane carrier proteins C. Simple diffusion D. Active transport
The primary advantage of gills versus the body surface for gas exchange in aquatic animals is that ________.
A. gills are located near the mouth B. gills have a much greater diffusion surface area C. gills decrease resistance to movement D. all gills contain a countercurrent exchange system