_____________________ means that oxygen is present.
a. Aerobic
b. Anaerobic
c. Glycolysis
d. Autotroph |
| Answer: a |
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What types of microorganisms cause fermentation to occur?
a. bacteria, yeasts, and molds
b. bacteria, viruses, and molds
c. nematodes, plankton, and yeasts
d. plankton, bacteria, and yeasts |
| Answer: a |
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What does fermentation do?
a. It takes place in all heterotrophs.
b. It is a by-product of cellular respiration.
c. It is required of photosynthesis.
d. It changes the chemical environment of a food. |
| Answer: d |
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What is an advantage to fermentation in food processing?
a. Fermentation can shorten the shelf life of foods by inhibiting the enzymatic deterioration of plant tissues.
b. Fermentation helps food to be stored safely.
c. Fermentation usually results in undesirable textures, flavors, and odors of food.
d. In some cases natural fermentation occurs which makes the original product unfit for consumption. |
| Answer: b |
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Which of the following are examples of foods made through fermentation?
a. milk, wheat flour, and cabbage
b. ground meat, potatoes, and bread
c. yogurt, bread, sauerkraut, and beer
d. soda, apple sauce, and eggs |
| Answer: c |
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Which of the following is an example of a substance with strong acidic properties?
a)bleach
b)tomato juice
c)soaps
d)ammonia solutions
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| Answer: b |
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What is the function of a buffer?
a)works in the opposition to a strong acid or base to equalize and bring the pH closer to neutral
b)creates a strong acid to increase the pH of a basic substance like milk
c)measures the acidity or alkalinity of a substance
d)interferes with normal chemical reactions to counteract the acid and keep the body pH near 5.0
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| Answer: a |
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Which of the following is created in the course of producing another substance?
a)aerobic
b)buffer
c)anaerobic
d)byproduct
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| Answer: d |
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If an organism is able to use the energy from the sun to create their own energy, or food supply then how are these organisms classified?
a)carnivores
b)heterotrophs
c)autotrophs
d)herbivores
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| Answer: c |
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What is the process by which molecules of food are broken down into usable energy?
a)fermentation
b)cellular respiration
c)photosynthesis
d)glycolysis
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| Answer: b |
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When a reaction is taking place in the absence of oxygen it is called _____.
a)aerobic
b)metabolic
c)lactic
d)anaerobic
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| Answer: d |
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What must occur before fermentation can begin to release energy from molecules for use in metabolic functions?
a)spoiling process
b)oxidation
c)cellular respiration
d)glycolysis
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| Answer: d |
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Why do our muscles have a painful feeling or produce a "burning” during an intense exercise?
a)it is the beginning of a reaction where glucose molecules build into pyruvic acid
b)pyruvic acid is converted to lactic acid and begins to build up inside our muscle cells
c)glucose molecule is converted into oxygen and usable proteins
d)oxygen in our muscle cells use bacteria to start a fermentation process that produces carbon dioxide
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| Answer: b |
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Which of the following microorganisms needs moisture to become active?
a)bacteria
b)molds
c)yeasts
d)fungi
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| Answer: c |
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One of the steps in preparing bread is to knead the dough. What component helps to create an elastic dough structure as found during the kneading step?
a)yeast
b)water
c)oil
d)gluten
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| Answer: d |
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