The "Age of Fishes" is an informal name for the:a
Ordovician period.
b. Silurian period.
c. Devonian period.
d. Permian period.
e. Carboniferous period.
C
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Many health food stores carry enzyme preparations intended for oral ingestion (by mouth) to supplement existing enzymes in various organs like the liver, heart, and muscle. Use your knowledge of the digestion process to explain why these preparations are unlikely to be effective as advertised.
What will be an ideal response?
Which of the following statements about the botulism toxin is NOT true?
a. It is an exotoxin. b. It is produced by the bacterium Clostridium. c. It may be found as a contaminant in poorly prepared food. d. Its brand name is Botox. e. It causes muscles to contract.
Which of the following terms is synonymous with photosynthetic organisms?
a. primary producer and autotroph b. primary consumer and autotroph c. primary producer and heterotroph d. primary consumer and heterotroph e. primary producer and saprotroph
Indoleacetic acid (IAA) is the most commonly occurring form of which of the following plant hormones?
A. abscisic acid B. gibberellin C. cytokinin D. auxin E. ethylene