Preventing the incorporation of microbes into food can by achieved by
A. washing fruits and vegetables.
B. aseptic techniques for handling meat, eggs, and milk.
C. avoiding cross-contamination of utensils and cutting boards.
D. handwashing and proper hygiene in the kitchen.
E. All of the choices are correct.
Answer: E
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Which group is typically used to calculate the frequency of an allele in a population?
A) Homozygous recessives B) The most fertile individuals C) Autosomal dominants D) Heterozygotes
The process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is part of the structure of the mitochondria of a eukaryotic cell?
A) cilia B) cristae C) thylakoids D) inclusions E) nucleolus
The biological species concept is based on:
A) differences among populations. B) geographic isolation. C) DNA sequences. D) reproductive isolation.