Which term represents the temperature that bacteria grow the fastest at?

A) maximum
B) minimum
C) optimal
D) human body temperature
E) hospitable


Answer: C

Biology & Microbiology

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Amphipathic molecules

A. possess only hydrophilic properties. B. possess only hydrophobic properties. C. possess both hydrophilic and hydrophobic properties. D. possess neither hydrophilic nor hydrophobic properties. E. Tend not to interact with other molecules.

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Pavlovian Conditioning of Hunger

What will be an ideal response?

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Roughly speaking, (1) one gram of carbohydrate is the equivalent of how many Calories? (2) one gram of fat is the equivalent of how many Calories? (3) one gram of protein is the equivalent of how many Calories? 

A. (1) = 4, (2) = 9, (3) = 4. B. (1) = 7, (2) = 9, (3) = 4. C. (1) = 4, (2) = 4, (3) = 4. D. (1) = 4, (2) = 10, (3) = 4.

Biology & Microbiology

Lactose is a disaccharide of glucose and galactose, and its digestion requires the actions of the enzyme lactase

If lactose is eaten as part of the diet but is not digested by lactase, this sugar is then metabolized by bacteria in the intestine, leading to the symptoms of lactose intolerance. Lactose intolerance, therefore, results from a(n) A) lack of dehydration synthesis of lactose. B) inability of the body to produce lactose. C) low blood lactose level. D) lack of hydrolysis of lactose.

Biology & Microbiology