Lesson 5: Microbial Growth and Control Flashcards

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1
Q

Series of biochemical reactions by which the cell breaks down or biosynthesizes various metabolites.

A

Metabolism

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2
Q

It is primarily composed of elements C, H, N, O, P, and S.

A

Cell

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3
Q

Requires a core set of nutrients.

A

Microbes

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4
Q

What nutrients are required in large amounts?

A

Micronutrients

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5
Q

What nutrients are required in minute amounts?

A

Macronutrients.

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6
Q

Name the 4 Physico-chemical requirements in growing microbes.

A
  1. Temperature
  2. pH
  3. Osmotic Pressure
  4. Chemical
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7
Q

What are the 3 primary groups in temperature?

A
  1. Psychrophiles
  2. Mesophiles
  3. Thermophiles (Hyperthermophiles & Extreme thermophiles)
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8
Q

A classified primary group in temperature where it loves a moderate-temperature (25-40C). It is a common type of microbe.

A

Mesophiles

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9
Q

Cold-loving microbes at 0C.

A

Psychrophiles

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10
Q

Heat-loving microbes at 50-60C.

A

Thermophiles

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11
Q

It has an optimum growth temperature of 60C or higher.

A

Hyperthermophiles

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12
Q

Heat-loving microbes at 121C and above.

A

Extreme thermophiles

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13
Q

What is the best narrow pH range that a bacteria could grow to?

A

Between 6.5 to 7.5

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14
Q

Bacteria that love acid environments.

A

Acidophiles

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15
Q

What do you call the water pressure required for the growth of a microbe.

A

Osmotic Pressure

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16
Q

Enumerate the 3 types of halophiles.

A
  1. Extreme halophiles
  2. Obligate halophiles
  3. Facultative halophiles
17
Q

In microbial cell growth, how many types of oxygen requirements do we have? Enumerate.

A
  1. Obligate aerobe
  2. Facultative anaerobe
  3. Obligate anaerobe
  4. Aetolerant anaerobes
  5. Microaerophile
18
Q

Ability to continue growing in the absence of oxygen.

A

Facultative anaerobe