How could losing mass in unused muscles possibly benefit an organism?
What will be an ideal response?
Maintaining muscle requires energy. Unused muscle represents a waste of resources that might better be used elsewhere.
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Body parts derived from mesoderm are the
A) muscle tissue, bone tissue, and internal reproductive organs. B) epidermis, hair, nails, and glands of skin. C) respiratory tract, urinary bladder, and urethra. D) pancreas, kidneys, and lymphatic vessels.
What can be inferred from the accompanying graph?
a. This reaction is endergonic, with a positive ?G. b. This reaction is endergonic, with a negative ?G. c. This reaction is exergonic, with a positive ?G. d. This reaction is exergonic, with a negative ?G. e. There is not enough information to make a determination.
Carolus Linnaeus (1707–1778):
a. was a Swedish botanist, zoologist, and physician. b. wrote Systema Naturae. c. had the insight that organisms can be organized into a system hierarchical classification with-out having a theoretical explanation for why these patterns should exist. d. All of the above.
You are taking a lab practical exam, and one station has pins in various internal structures of a bisected mammalian heart. You can orient yourself without picking up and examining the exterior of the heart because
A. the width of the external wall of the left ventricle is thicker than all the other chamber walls. B. the width of the external wall of the right ventricle is thicker than all the other chamber walls. C. the ascending aorta exits from the right ventricle. D. the width of the external wall of the left atrium is thicker than all the other chamber walls. E. the width of the external wall of the right atrium is thicker than all the other chamber walls.