The main form of nitrogenous wastes released by birds to their environment is ____
a. nitrate
b. ammonia
c. uric acid
d. amino acids
e. Urea
ANSWER: c
You might also like to view...
Phylogenetic trees are usually constructed using either a distance-based ________ approach, or a characteristic ________ approach.
Fill in the blank(s) with the appropriate word(s).
The food for your dog is kept in the refrigerator, and any time you open the door, the dog comes. This is an example of
A. association. B. learned behavior. C. conditioning. D. All of these answers are true.
In your classroom aquarium you notice that the fish tend to stay around the rock piles and plants instead of swimming around the open water. Which statement below best explains your observations?
A) The fish are seeking shelter from strong currents. B) Fish use structures in their environment for protection and cover. C) Fish store uneaten food around structures. D) Structures capture heat so the fish use these locations to warm their bodies.
Graves' disease is an example of which of the following type II hypersensitivity cytotoxic reactions?
A) Antibodies directly recruit leukocytes to lyse tagged extracellular cells B) IgM binds to nonsoluble antigens on the surface of a cell causing complement cascade activation to lyse cells. C) Antibodies interact with a cell-surface receptor on self-cells causing the inactivation of the receptor. D) IgG binds to nonsoluble antigens on the surface of a cell causing complement proteins to opsonize the target, thereby tagging it for phagocytosis. E) Antibodies interact with a cell-surface receptor on self-cells causing the overactivation of the receptor.