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Bio > Micro-organims > Flashcards

Micro-organims Flashcards

(30 cards)

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1
Q

Levels of classification?

In order.

A
  1. Domain
  2. Kingdom
  3. Phylem
  4. Class
  5. Order
  6. Family
  7. Genus
  8. Species
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2
Q

Characteristics of a Prokaryote?

A
  1. No nucleus
  2. No membrane-bound organelles
  3. Contains DNA
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3
Q

Characteristics of a Eukaryote?

A
  1. Nucleus
  2. Membrane-bound organelles
  3. Contains DNA
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4
Q

What is a Heterotroph?

A

An organism that obtains it’s food via the consumption of another organism.

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5
Q

What is an Autotroph?

A

An organism that makes it’s own food.

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6
Q

Characteristics of a Bacterium?

7 traits

A
  1. Most abundant organism
  2. Amongst the smallest organisms
  3. Inhabits practically all areas of the Earth
  4. Some can cause disease, but most are harmless
  5. Unicellular
  6. Vary in shape
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7
Q

What Kingdom does Bacteria belong to?

A

Monera

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8
Q

The four shapes of bacteria?

Just the names

A
  1. Cocci
  2. Spiralla
  3. Bacilli
  4. Vibrios
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9
Q

Shape of Cocci bacterium?

Describe.

A

Spherical

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10
Q

Shape of Spiralla bacterium?

A

Spiral-shaped

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11
Q

Shape of Vibrios bacterium?

A

Comma-shaped

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12
Q

Shape of Bacilli bacterium?

A

Rod-shaped

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13
Q

Structures of the bacterium?

6 structures

A
  1. Capsule
  2. Plasma membrane
  3. Flagella
  4. Nucleus
  5. Cell wall
  6. DNA
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14
Q

Structure of the nucleus in a bacterium?

A
  1. no nuclear membrane
  2. DNA is not combined with histone
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15
Q

Function of the flagella?

A

Enables movement

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16
Q

Structure of the cell wall of a bacterium?

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A
  • Rigid
  • Large molecules
  • Made of amino acids and polysaccharides
17
Q

Structure of the DNA of a bacterium?

Study These Flashcards
A

A single closed loop.

19
Q

The forms of bacteria?

Not the shape.

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A
  • Singly
  • Chains
  • Clumps
20
Q

Bacteria in a clump is called?

21
Q

Bacteria in a chain is called a?

22
Q

Functions of the Plasma Membrane of the bacterium?

Study These Flashcards
A

Serves as:
* mitochondrion
* endoplasmic reticulum
* chloroplast
and controls the entry and exit of materials

23
Q

Functions of the Capsule

Study These Flashcards
A

Protects against the host’s defences

24
Q

Characteristics of Algae

6

Study These Flashcards
A
  1. aquatic
  2. contains chlorophyll
  3. autotrophic
  4. release large quantities of 02
  5. free-floating
  6. produce asexually
25
Economic uses of Algae?
* phycocolloids * plant growth regulators * idodine * pigments * nutrient extracts * cash crop
26
Groups of Algae?
* green algae brown algae * red algae * diatoms * dinoflagellate
27
Characteristics of Fungi?
* Usually invisible to the naked eye * Mostly free-living * Heterotrophs * Some are symbiotic
28
Symbiosis?
A relationship between two organisms where at least one benefits.
29
Heterotrophs? | Definition
Organisms that cannot produce their own food, so instead take nutrition from other organisms
30

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