Respond to the following statements with reference to the five components of the gastrointestinal tract listed below.
A. Microbes in this organ help ruminants break down cellulose.
B. Enzymatic digestion of proteins begins in this organ.
C. Bile salts, bile pigments, cholesterol, and lecithin are stored by this organ.
D. Chemical digestion of food is completed here.
E. Short tubular projection of the large intestine.
F.
A. Stomach
B. Stomach
C. Gallbladder
D. Small intestine
E. Appendix
F. Large intestine
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Which of the following ions is most likely to cross the plasma membrane of a resting neuron?
A) K+ B) Na+ C) Ca2+ D) Cl- E) Mg2+
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.
Functional residual capacity is comprised of which of the following?
A) vital capacity and expiratory reserve volume only B) tidal volume, inspiratory reserve volume, and expiratory reserve volume C) tidal volume and expiratory reserve volume only D) tidal volume and inspiratory reserve volume only E) residual volume and expiratory reserve volume only
Many new species of desert lizards have arisen from a nonnative population which was introduced into the American
southwest. This example best describes:a. the effects of climatic change. b. sympatric speciation. c. allopatric speciation. d. adaptive radiation. e. microevolution.