In birds, the hypothalamus does not
a. stimulate shivering.
b. stimulate panting.
c. stimulate erection of plumage.
d. none of these.
C
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A membrane that allows some substances to travel across it while restricting the passage of others is ________
A) selectively permeable B) impermeable C) hypotonic D) freely permeable
Which are ways that water leaves the body? Choose all that apply.
A. Exhalation B. Feces C. Sweat D. Most metabolic processes use up water
Which of the following correctly matches a nuclear structure with its function?
A. nuclear pores - allow molecules to move between the nucleus and cytoplasm. B. chromatin - fluid portion of the nucleus C. chromosomes - contains RNA and histones D. nuclear envelope - contains the nucleolar organizer E. nucleolus - DNA synthesis
Which blood component is NOT correctly matched with its function?
A. erythrocytes - transport oxygen B. leukocytes - protect against disease C. platelets - phagocytize bacteria D. plasma proteins - maintain blood osmotic pressure; involved in clotting E. monocytes - become macrophages