Microbes Prep Flashcards
What is a Pathogen
A microscopic organism that causes disease
Is bacteria unicellular or multicellular
Unicellular
What 3 basic shapes are bacteria
Spheres, rods and spirals
Does bacteria have a nucleus
No
What do bacteria have instead of a nuclei
Their entire DNA is stored in a single chromosome
What part of the bacteria enables them to move
The Flagella
Bacteria cells contain…….which carry some of their genes
Plasmids
Some bacteria are…….but most are……..
Pathogens
Decomposers
What are all viruses
Parasites
What does a virus not have, and what do they have instead
A nucleus,Cytoplasm
They just have DNA in the core surrounded by a protein coat
What do viruses do to our cells
They create an envelope which surrounds our cells and takes over the nucleus
How do viruses reproduce
By taking over the hosts genetic machinery
What shape is an Influenza Virus
Round and flat
What shape is a Tobacco Mosaic Virus
Cylindrical
Are mushrooms and toadstools multi or single celled
Multi
What are the fungi cells walls made from
Chitin
Multicellular fungi contain…….which are fine thread like filaments
Hyphae
What is a network of hyphae called
Mycelium
What type of digestion does hyphae do and what type of enzymes are used
Saprotrophic nutrition
Extracellular enzymes
Are protoctists multi, single celled or microscopic
Unicellular
Microscopic
How do protoctist vary
There are plant and animal like varieties
Protoctists that are plant like……
Photosynthesise
Give two examples of unicellular protoctists
Euglena
Plasmodium- cause malaria
Give two examples of multicellular protoctists
Algae, Seaweed
How do protoctists reproduce
Asexually
