Diet supplements that promote the growth and metabolic activity of beneficial bacteria are known as
____________________. Fill in the blank(s) with the appropriate word(s).
prebiotics
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Agar is an excellent solidifying agent for microbiological media because
A. it is not degraded by most microorganisms and solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C are correct. B. it is not degraded by most microorganisms. C. solid agar remains solid until the temperature is raised to 90°C, and liquid agar remains liquid if the temperature is lowered to 45°C. D. agar provides an excellent source of nutrition for a variety of different microorganisms.
During translation, the nucleotides that make up the mRNA are read in groups of three. These groups are called
A. codons. B. anticodons. C. exons. D. introns. E. templates.
Eutrophication is associated with all of the following
characteristics of a lake EXCEPT a. decrease in depth. b. limited transparency. c. abundant oxygen at all levels. d. increased abundance of anaerobic decomposers. e. abundant phytoplankton.
The excretory system uses oxygen because oxygen diffuses more rapidly into the excretory system because it contains water in the urine.
a. true b. false