Tawny owls (Strix aluco) pair-bond for life, with both members of a pair living and hunting in
adjacent, well-defined territories. Their reproduction is regulated in accordance with the resources,
especially the food supply, present in their territories. Tawny owls can best described as:
a. r strategists.
b. K strategists.
c. fecundists.
d. life historists.
e. scramblers
B
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A pharmaceutical company is attempting to develop a new drug. An expected outcome of the development process will be monitoring of the new drug by the:
a. Drug Enforcement Agency (DEA) b. Food and Drug Administration (FDA) c. National Institutes of Health (NIH) d. United States Pharmacopeia (USP)
Match the following items with the correct phrases.
_______1. Capable of producing antibody-secreting plasma cells after clone formation. _______2. They help regulate the immune response by turning off certain activities. _______3. Phagocytic cells that act as “antigen-presenting cells” in the immune response to (processing of) T-dependent antigens. _______4. The major target of human immunodeficiency virus (HIV). _______5. The only cells required in the immune response to T-independent antigens. a. B lymphocytes (B cells) b. macrophages c. mast cells d. TH lymphocytes (THcells) e. TSlymphocytes (TScells)
Which of the following molecules is most likely to cross the cell membrane directly by passive diffusion?
A) Na+ B) fructose (a sugar) C) a steroid hormone (a hydrocarbon) D) insulin (a polypeptide) E) fructose and insulin
Which brain structure is correctly matched with its function?
a. thalamus-relays messages to cerebrum b. pons-regulates emotional response c. medulla-regulates auditory reflexes d. cerebellum-regulates coughing and sneezing e. inferior colliculi-regulate muscle coordination