After last weeks look at bacteria, this week we continue to examine microscopic organisms. We do this by looking at viruses, not quite considered living things, and protists.
Compare and contrast viruses and living things?
What is a protist?
How do protists show the 4 characteristics of all living things?
A few of the microorganisms we have found.
A guide to help identify some of what we see in our water samples.
Guide to Identification of Fresh Water Microorganisms -
This weeks contract can be found here.
3 comments:
A virus needs a host cell to reproduce. Viruses do not grow and aren't completely organized as they do not eat. A protist is a single or multicellular organism with a nucleus. Many protists form cysts around themselves in bad conditions. All of these organisms need a water based environment and they all have mitochondria for cellular respiration.
A protist can be a single or multicellular organism. Protist have a nucleus. A virus must have a host cell. Without a host cell, a virus can not reproduce.
A protist can be either a single or multicellar organism.
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