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Biology 11 > Chapter 18 - Bacteria > Flashcards

Chapter 18 - Bacteria Flashcards

1
Q

Flagella

A

Long whiplike strands that extend from a cell and cause cell movement

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2
Q

Parasite

A

Organism that lives on or in the body of another organism and receives nourishment

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3
Q

Pathogen

A

Disease causing bacteria

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4
Q

Mycoplasma

A

Tiny virus-like organisms in many severe diseases

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5
Q

Rickettsia

A

Cellular organisms responsible for many diseases

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6
Q

Growth Medium

A

Nutrients mixed with agar to form a medium for growth of bacteria

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7
Q

Decomposer

A

Consumer that derives nourishment by breaking down dead organisms and wastes

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8
Q

Fever

A

Increased body temperature reacting to infection

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9
Q

Chemotherapy

A

Synthetic drugs to fight infection

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10
Q

Sterile Technique

A
  1. Wash area and hands
  2. Sterilize inoculating loop
  3. Sterilize bacteria tube
  4. Transfer bacteria to agar plate and spread
  5. Repeat 3, 2, 1
  6. Place agar upside down, deal with name and place in incubator
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11
Q

Coccus/Cocci

A

•Circle

a) Coccus - Single
b) Diplococcus - Pairs
c) Streptococcus- Chains

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12
Q

Bacillus/Bacilli

A

•Rod

a) Bacillus and streptobacilli forms

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13
Q

Spirillum/Spirilla

A

•Spiral

a) Single form only

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14
Q

Reproduction Methods

A
  1. Binary Fission
    Asexual reproduction of organisms by splitting cell in half
    Pros: •Fast
    •Lots

Cons: •All the same

  1. Conjugation
    Sexual reproduction when 2 cells join, DNA, nucleus or cell contents from 1 cell passes into the other and recipient cell undergoes division
    Pros: •Superbugs
    Cons: •Slow
  2. Endospores
    Spore formes from a bacteria cell during unfavourable conditions
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15
Q

Ways Bacteria Obtain Energy

A
  1. Autotrophic (Photosynthetic and Chemosynthetic)
  2. Hererotrophic
  3. Saprophyte
  4. Parasitic
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16
Q

Levels of Oxygen

A
  1. Obligate Aerobe - Aerobes that can’t live without oxygen
  2. Facultative Anaerobe - Aerobes that use fermentation when oxygen isn’t present
  3. Obligate Anaerobe - Can’t tolerate oxygen
17
Q

Major Bacterial STD’s

A
  • Gonorrhoea

* Syphilis

18
Q

How Can E.Coli Be a Pathogen?

A

E. coli live in our intestines. They become pathogenic when they leave our intestines and chase internal bleeding and diarrhea

19
Q

4 Methods to Control Bacteria Growth

A
  1. Nutrition
  2. Temperature
  3. Sterilization
  4. Ozone
20
Q

3 Drugs Control Bacteria Growth

A
  1. Antibiotics - Kill bacteria by breaking cell wall
  2. Antitoxins - Deactivate bacteria’s toxin’s
  3. Toxoids - Weak toxina that make body produce antibodies
21
Q

Immune System & Bacteria

A

Controlled by white blood cells

  • Phagocytes
  • Lymphocytes

Biology 11 (6 decks)

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