Protoctists, Bacteria And Viruses Flashcards Preview

Biology > Protoctists, Bacteria And Viruses > Flashcards

Flashcards in Protoctists, Bacteria And Viruses Deck (13)
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1
Q

How would you describe a protoctist

A

Single celled
Microscopic
Some have chloroplasts
Some don’t

2
Q

Give two examples of protoctist a

A

Chlorella (plant like)

Amoeba (animal cell like-lives in water)

3
Q

How would you label a protoctist

A

With a nucleus

4
Q

Describe bacteria

A
Single celled
Microscopic
No nucleus
Circular chromosome of DNA
Some can photosynthesise 
Most feed of other organisms
5
Q

Give two examples of bacteria

A
Lactobacillus bulgaricus (used to make milk sour and turn to yoghurt-rod shaped)
Pneumococcus (round in shape)
6
Q

How would you label bacteria?

A

Cell wall, cytoplasm, circular chromosome, cell membrane, plasmids

7
Q

Describe viruses

A
Particles rather than cells 
Smaller than bacteria
Can only reproduce inside living cells (parasite)
Infect all types of living organisms
Come in different shapes and sizes
Don't have a cellular structure
8
Q

How would you label a virus

A

With a protein coat and some genetic material (either DNA or RNA)

9
Q

Give three examples of viruses

A

Influenza virus
Tobacco mosaic virus (makes the leaves of tobacco plants discoloured by stopping them producing chloroplasts)
HIV

10
Q

What are pathogens

A

Organisms that cause disease

11
Q

Give an example of a protoctist pathogen

A

Plasmodium - causes malaria

12
Q

Give an example of a bacterium pathogen

A

Pneumococcus - causes pneumonia

13
Q

Give two examples of virus pathogens

A

Influenza virus (causes flu) and HIV (causes AIDS)