Among adults, the most common food allergy is to
What will be an ideal response?
shellfish
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Match the following items with the correct phrases.
_______1. ____________________ are also known as immunogens. _______2. Molecules referred to as antigenic determinants are also known as ____________________. _______3. ____________________ are in a class of proteins called immunoglobulins. _______4. Small molecules called ____________________ are antigenic only when then are coupled with large carrier molecules such as proteins. _______5. ____________________ initiate type III hypersensitivity reactions. a. antibodies b. antigens c. epitopes d. haptens e. immune complexes
Which of the following is true in the fern life cycle?
a. Gametophytes originate within and are dependent upon sporophytes b. Sporophytes originate within and are dependent upon gametophytes c. Both gametophytes and sporophytes are totally independent from each other and are equally dominant d. Gametophytes are free-living and photosynthetic, but are replaced by a dominant sporophyte generation e. Gametophytes are photosynthetic and partially independent from the sporophytes
If a cell has a greater concentration of solute than its environment
A. the cell is hypertonic to the environment. B. the cell is isotonic to the environment. C. the cell is hypotonic to the environment. D. the cell will not experience a net gain or loss of water. E. the cell will crenate.
If a plant heterozygous for the genes for both seed color and shape is self-fertilized, the ratio of offspring with smooth, green seeds is ________/16. (Yellow and smooth are the dominant phenotypes.)
Fill in the blank(s) with correct word