Coral polyps supply their symbionts with their nitrogenous wastes
Indicate whether the statement is true or false
T
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What type of bond typically links two different proteins together?
a. a hydrogen bond b. a disulfide bond c. a bond resulting from a dehydration synthesis reaction d. none of the above
The lymphoid tissues of the intestinal tract are collectively referred to as ________.
A. lymph nodes B. the thymus C. the spleen D. GALT E. tonsils
A serum titer involves
A.) serially diluting a serum sample B.) determining the lowest dilution of serum that produces a visible reaction C.) determining the highest dilution of antigen that produces a visible reaction D.) the western blot method
Why are epithelial membranes not very thick?
A. Epithelial tissues can only reach a certain thickness because their growth is constrained by microtubules inside the cell membrane. B. Thick epithelial tissues would collapse due to the drying effect of the environment. C. Epithelial tissues are required to support other cells growing on top of the tissue. D. Epithelial tissues are programmed to stop dividing after only a few cell cycles. E. Epithelial tissues play a critical role in transport, and must be thin to allow diffusion to occur.