Which statement is true?
a. Haversian canals allow veins and arteries to pass through muscle tissue.
b. Canaliculi help to maintain body temperature and protect internal organs.
c. Trabeculae are plates that provide structural support to spongy bone tissue.
d. Osteoclasts are mutated bone cells that injure the organism by destroying bones.
c. Trabeculae are plates that provide structural support to spongy bone tissue.
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Simple staining and microscopy could easily distinguish the different taxa intermixed within a community of Sarcina, Staphylococcus, and coryneform bacteria
Indicate whether the statement is true or false.
In the liver, the enzyme glycogen phosphorylase catalyzes the breakdown of glucose
a. True b. False
Refer to Figure 46-1. Put figures 1-4 in the correct order to represent the two-cycle breathing process of birds
a. 1 ? 2 ? 3 ? 4
b. 2 ? 3 ? 4 ? 1
c. 2 ? 3 ? 1 ? 4
d. 3 ? 2 ? 1 ? 4
e. 4 ? 3 ? 2 ? 1
Presently, it is thought that organic polymers may have formed and accumulated on:
a. silt and sand. b. sand and mud. c. rocks and clay. d. water and shells. e. sand and heavy metals.