Which of the following helps preserve foods by controlling microbial access to water?

A. Drying
B. Addition of sugar
C. Addition of salt
D. All of the choices are correct.


Answer: D

Biology & Microbiology

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Which letter represents an organism that could only be a primary consumer?

A) A B) B C) C D) D E) E

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Glycolysis, pyruvate oxidation, and the citric acid cycle all have this molecule in common as one of

their products.

a. CO2 b. H2O c. ATP d. FADH2 e. NADH

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If blood sugar levels drop below normal, the digestive system is primarily responsible for returning levels to normal. This is an example of

A. angiogenesis. B. metastasis. C. carcinogenesis. D. homeostasis. E. digestion.

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Which chemical carries the DNA's instructions for synthesizing a particular protein from the nucleus to the cytoplasm?

A) transfer RNA B) messenger RNA C) RNA transcriptase D) ribosomal RNA

Biology & Microbiology