The abundance of hydrogen ions in solution is a measure of ________
Fill in the blank(s) with correct word
acidity
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Why would the use of a known, reliable starter culture improve the safety of fermented meat products?
A. It doesn't. All fermented meat products are inherently unsafe since we can't determine what fermentation products are left behind in the food. Some of them may be toxic. B. By using pure starter cultures, we KNOW what we're adding in, and how much. We can control the microbial fermentation precisely to best prepare the food product. C. We need to be very careful which microbes are introduced into a food product. Some microbes can interact with microbes already present in the food, producing toxins and toxic byproducts that might harm human beings. D. Not every fermenting microbe ferments the same way. Even different strains of the same species might produce different products. Some of these products might not be safe for human consumption. E. By using pure starter cultures, we KNOW what we're adding in, and how much. We can control the microbial fermentation precisely to best prepare the food product AND not every fermenting microbe ferments the same way. Even different strains of the same species might produce different products. Some of these products might not be safe for human consumption.
Relatively little is known about many obligate anaerobes. Why might this be so?
A. The obligate aerobes are far more numerous, and also far more interesting. B. It's much harder to provide the right atmospheric environment to cultivate obligate anaerobes, so it's been harder to study them. C. Only obligate aerobes cause disease, so we've had little reason to study obligate anaerobes. D. The majority of obligate anaerobes are very nutritionally fastidious, which has slowed their study.
Some intercellular regulatory molecules that exert only very local effects are called ________ regulators.
A. sympathetic B. exogeneous C. merocrine D. endocrine E. paracrine
Habitat: Human Stomach
What will be an ideal response?