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Biology > Microbes Prep > Flashcards

Microbes Prep Flashcards

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1
Q

What is a Pathogen

A

A microscopic organism that causes disease

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2
Q

Is bacteria unicellular or multicellular

A

Unicellular

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3
Q

What 3 basic shapes are bacteria

A

Spheres, rods and spirals

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4
Q

Does bacteria have a nucleus

A

No

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5
Q

What do bacteria have instead of a nuclei

A

Their entire DNA is stored in a single chromosome

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6
Q

What part of the bacteria enables them to move

A

The Flagella

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7
Q

Bacteria cells contain…….which carry some of their genes

A

Plasmids

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8
Q

Some bacteria are…….but most are……..

A

Pathogens

Decomposers

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9
Q

What are all viruses

A

Parasites

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10
Q

What does a virus not have, and what do they have instead

A

A nucleus,Cytoplasm

They just have DNA in the core surrounded by a protein coat

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11
Q

What do viruses do to our cells

A

They create an envelope which surrounds our cells and takes over the nucleus

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12
Q

How do viruses reproduce

A

By taking over the hosts genetic machinery

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13
Q

What shape is an Influenza Virus

A

Round and flat

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14
Q

What shape is a Tobacco Mosaic Virus

A

Cylindrical

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15
Q

Are mushrooms and toadstools multi or single celled

A

Multi

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16
Q

What are the fungi cells walls made from

A

Chitin

17
Q

Multicellular fungi contain…….which are fine thread like filaments

A

Hyphae

18
Q

What is a network of hyphae called

A

Mycelium

19
Q

What type of digestion does hyphae do and what type of enzymes are used

A

Saprotrophic nutrition

Extracellular enzymes

20
Q

Are protoctists multi, single celled or microscopic

A

Unicellular

Microscopic

21
Q

How do protoctist vary

A

There are plant and animal like varieties

22
Q

Protoctists that are plant like……

A

Photosynthesise

23
Q

Give two examples of unicellular protoctists

A

Euglena

Plasmodium- cause malaria

24
Q

Give two examples of multicellular protoctists

A

Algae, Seaweed

25
Q

How do protoctists reproduce

A

Asexually

Biology (16 decks)

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