Variety of Living Organisms Flashcards
1
Q
Give 4 different types of eukaryotic organism
A
- Animal
- Plant
- Fungi
- Protoctist
2
Q
Give 3 differences between plant and animal cells
A
- Plant cells have a cell wall whereas animal cells do not
- Plant cells have a permanent vacuole whereas animal cells do not
- Plant cells have chloroplasts and are able to photosynthesise whereas animal cells do not
3
Q
Describe the structure of fungi
A
- Chitin cell wall
- Often multinucleated
- They contain a mycelium which is made of hyphae threads
4
Q
How do fungi feed?
A
They are saprotrophic so they secrete enzymes that break down their food outside of their cells and then they absorb the nutrients.
5
Q
Are prokaryotic cells multicellular or unicellular?
A
Prokaryotic cells are unicellular
6
Q
Give 5 features of bacterium cells
A
- Cell membrane
- Cell wall
- Cytoplasm
- Plasmid loops of DNA
- No nucleus but large DNA loop instead
7
Q
What is a pathogen?
A
A disease-causing microorganism
8
Q
Give 4 different types of pathogen
A
- Bacteria
- Fungi
- Viruses
- Protoctists
9
Q
Describe the structure of a virus
A
- Protein husk
- Contain nucleic acid (DNA or RNA)
10
Q
Give 3 examples of viruses
A
- Tobacco mosaic virus (TMV)
- Human immunodeficiency virus (HIV)
- Influenza
11
Q
Give two different species of bacteria
A
Lactobacillus bulgaricus - Used in the production of yoghurt from milk.
Pneumococcus - Bacterium that causes pneumonia.
