The growth of microorganisms in a food product is influenced by the availability of
A. moisture.
B. acidity.
C. nutrients.
D. temperature.
E. All of the choices are correct.
E. All of the choices are correct.
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Gene regulation can involve a protein repressor that blocks ________ from initiating transcription.
A. rRNA B. RNA polymerase C. DNA polymerase III D. DNA polymerase I E. mRNA
Which item below is unique to eukaryotic cells?
a. cell wall b. plasma membrane c. nucleoid d. ribosomes e. vacuole
Before messenger RNA is mature,
a. all exons are deleted and removed. b. a cap and a tail are provided. c. anticodons are assembled. d. the transfer RNA transfers the messenger RNA to the ribosome. e. the single RNA strand duplicates itself in much the same way as DNA
Which of the following elements is a plant micronutrient?
1.Calcium 2.Iron 3.Potassium 4.Sulfur