Which of the following is typically produced as a primary product by bacteria or fungi?
A) Amino acids
B) Antibiotics
C) Vitamins
D) Steroids
E) All are produced as primary metabolites.
Answer: A) Amino acids
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Which chemical is a hormone that is involved in digestion?
A) bile B) hydrochloric acid C) gastrin D) amylase
Guttation typically occurs:a
at noon. b. at dawn. c. at dusk. d. at night. e. when the sun is at its peak
The initiation of translation in archaea ________.
A. employs fMet-tRNAifMet the same as bacterial cells, but proceeds in a mechanism similar to eukaryotes B. employs fMet-tRNAifMet and proceeds in a mechanism similar to bacterial cells C. employs Met-tRNAiMet and proceeds in a mechanism similar to eukaryotic cells D. employs Met-tRNAiMet the same as eukaryotic cells, but proceeds in a mechanism similar to bacteria
In lakes, the open-water surface layer is called the ____.
A. benthic zone B. abyssal zone C. limnetic zone D. littoral zone E. profundal zone