ADH ________ the permeability of the cells of the collecting duct to water
Fill in the blank(s) with correct word
increases
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A beta turn consists of ______________ amino acid(s)
A. one B. two C. three D. four E a variable number of
The virus originally used for vaccination against smallpox is named
A. vaccinia. B. cowpox. C. rubella. D. herpes.
When one plant is shaded by another, why is the ratio of far-red to red light increased compared to an unshaded plant?
A. Phytochrome in the taller plant absorbs most of the red light. B. Auxin absorbs mostly far-red light. C. As light passes through the leaves of the taller plant, most of the red light is absorbed by chlorophyll. D. Far-red light mostly reflects off the surface of the soil while red light is mostly absorbed. E. Shade is enriched in far-red wavelengths of light.
Type I survivorship curves
a. are characteristics of humans and elephants. b. typify a population in which all ages have an equal chance of survival. c. indicate a high mortality rate in the very young. d. show that very few young are produced, that each is given parental support, and that most individuals live a relatively long life and die of old age. e. are typical of annual plants