Some algae utilize calcium carbonate to:
a. deter herbivores.
b. aid in maintaining a proper pH balance.
c. assist in photosynthesis.
d. replace mucus.
e. prevent from freezing.
A
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Which microorganism species is most well-adapted to life on the skin?
A. Malassezia B. Staphylococcus epidermidis C. Streptococcus pyogenes D. Corynebacterium diphtheriae E. Candida albicans
Within an organism, all cells have the same ____, whereas different cell types contain different ____
a. RNA; genes b. protein; RNA c. genes; proteins d. RNA; protein e. proteins; genes
Endocrine products are a class of molecules called ________.
Fill in the blank(s) with the appropriate word(s).
Softwood is the wood:a
found at the center of a tree.
b. of cone-bearing gymnosperms. c. of flowering plants. d. formed when water is abundant. e. formed when water is less abundant.