In plants, primary and secondary cell walls, though distinctly different, share all of the following molecules except
a. cellulose.
b. hemicelluloses.
c. pectin.
d. peptidoglycans.
Ans: d. peptidoglycans.
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A plate of solid growth medium with colonies on it is pressed gently onto sterile velveteen. The
velveteen "stamp" is used to make identical plates. This technique is called:
a. replication. b. replica plating. c. plating. d. plate making. e. horizontal gene transfer
Today the term "algae" is used primarily for
organisms in the group(s) a. bacteria. b. protista. c. plantae. d. bacteria and protista only. e. bacteria, protista, and plantae
The traditional evolutionary diagrams are in the form
of a. interlocking circles. b. a wheel and spokes. c. a set of parallel lines. d. a tree. e. segmented bars.