Ch. 28 Flashcards
1
Q
What is a protist
A
A mostly unicellular eukaryote. Protists constitute a phylogenetic group, they are no longer a kingdom. They are the most structurally and functionally diverse group of all eukaryotes.
2
Q
Eukaryotes
A
Membrane-enclosed organelles. Most are protists and most protists are unicellular.
3
Q
Types of protists
A
Photoautotrophs (contains chloroplasts), heterotrophs (absorb organic molecules or ingest larger food particles), mixotrophs (combines photosynthesis and heterotrophic nutrition).
4
Q
Amitochondriates
A
Lack mitochondria. Many have been reclassified due to discovery of their mitochondria.
5
Q
Endosymbiosis
A
A relationship between two species in which one organism lives inside the cell or cells of another organism.
