Characteristic of Organisms (bacteria, virus, fungi, parasite)

Question 1

Viruses (replication mode, cellular membrane, cell wall)

Answer 1

Viruses

Replication: Direct Host cell to make new viruses

Cellular membrane: enveloped or naked (non enveloped)

Cell wall: absent

NOTE: Viruses are neither prokaryotes nor eukaryotes.

Question 2

Bacteria (replication mode, cellular membrane, cell wall)

Answer 2

Bacteria

Replication: Binary fission (asexual)

Cellular membrane: Yes but no sterols on it except mycoplasmas.

Cell wall: Peptidoglycan

**NOTE: Baterias are prokaryotes. All other organisms are eukaryotes…except viruses, which is Neither prokaryotes or eukaryotes **

Question 3

Fungi (replication mode, cellular membrane, cell wall)

Answer 3

Fungi

Replication: Cytokinesis with mitosis / meiosis

Cellular membrane: Yes. they have ergosterol and are targetted by antifungal drugs.

Cell wall: Complex carbohydrate cell wall:

• chitin
• glucans
• mannans

NOTE: it is Eukaryotic like every other organism except bacteria (prokaryote and viruse (neither pro nor euk)

Question 4

Parasites (replication mode, cellular membrane, cell wall)

Answer 4

Parasites

Replication: cytokinesis with Mitosis/ Meiosis

Cellular membrane: Yes. they have sterols like cholesterol

Cell wall: No cell wall.

Question 5

Prokaryote Vs. Eukaryotes

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Question 7

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Question 8

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Question 9

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Question 10

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Question 11

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Question 12

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Question 13

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Question 14

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Question 15

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Question 16

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Question 17

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Question 18

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Question 19

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Question 20

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Question 21

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Question 22

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Question 23

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Question 24

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