What type of cell junctions are found in cardiac muscle tissue?
A. myocardium and pericardium
B. intercalated disks
C. atria and auricles
D. septae and chordae
E. gap junctions and desmosomes
Answer: E
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The most inclusive level of organization is exemplified by which of the following?
A. Heart B. Carbon atom C. DNA D. Zebra E. Red blood cell
In animal metabolism, most of the monomers released by digestion of food macromolecules are metabolized to provide energy. Only a small portion of these monomers are used for synthesis of new macromolecules. The net result is that
a. water is consumed during homeostasis, but water is generated during periods of growth. b. water is generated during homeostasis, but water is consumed during periods of growth. c. water is consumed by animal metabolism. d. the water consumed is exactly balanced by the water generated, to maintain homeostasis. e. water is generated by animal metabolism.
Which of the following characteristics are expected in the first animals to have colonized land?
1. were probably herbivores (ate photosynthesizers) 2. had four appendages 3. had the ability to resist dehydration 4. had lobe-finned fishes as ancestors 5. were invertebrates A) 3 only B) 3 and 5 C) 1, 3, and 5 D) 1, 2, 3, and 4
Proton motive force can be used for
a. transport of molecules into or out of the cell. b. cell locomotion. c. generating ATP. d. all of the above.