An open system in which the growth rate is maintained by adding a nutrient (present in limiting quantities) at the same rate that medium containing microorganisms is removed is called a
A. manostat.
B. culturostat.
C. chemostat.
D. turbidostat.
Answer: C
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The small circular molecules of DNA commonly found in bacteria are called ________.
A. plastids B. chromatids C. plasmids D. loops
The enzyme responsible for breaking down alcohol
is a. alcohol methylase. b. alcohol polyphosphorylase. c. hydroxyl alcoholgenase. d. transmethylogenase. e. alcohol dehydrogenase.
Which of the following monomers is not paired correctly?
A) glucose-carbohydrates B) amino acids-proteins C) nucleotides-nucleic acids D) All of these are paired properly.
Which of the following atoms is most likely to participate in an ionic bond?
A.) carbon, with an outer electron shell filled with four of a possible eight electrons B.) chlorine, with an outer electron shell filled with seven of a possible eight electrons C.) phosphorus, with an outer electron shell filled with five of a possible eight electrons