Which of the following is a nitrogenous waste of animals?
a. amino acids
b. carbon dioxide
c. ammonia
d. water
e. sugars
C
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You observe a chimpanzee use a stick to dig termites out from a nest. How could you determine if this digging behavior is learned or innate?
A. Take the stick away and see if the chimp picks up another one. B. Show the chimp termite mounds of different sizes and see which one he/she chooses for digging. C. Provide the chimp with lots of different foods and see if he/she still digs for termites. D. Raise chimps in isolation from other chimps and see if the chimps still exhibit the behavior. E. Raise chimps in groups and see if the chimps still exhibit the behavior.
What traits do green algae and plants have in common?
_____ plastids. _____ chlorophyll a and b. _____ a sporic life cycle. _____ beta-carotene. _____ embryos.
Which cells of the pancreas produce insulin?
a. alpha cells b. beta cells c. delta cells d. F cells e. gamma cells
Which of the following can be defined as small proteins that are secreted from virally infected cells to prevent the spread of the infection?
A) interferons B) macrophages C) immunoglobulins D) mast cells