Biology Chapter 20 (Module 4)

Asexually through mitosis most commonly. But some may reproduce sexually, which results in more genetic combinations.

Diplomonads, which have two nuclei and flagella, and the parabasalids.

Infectious problems such as the GI (gastrointestinal) disorder “giardia” and the UTI (urinary tract infection).

Euglenids or kinetoplastids.

The euglenids are common fresh water organisms who have photosynthesis and eyespots. Kinetoplastids have mitochonria contained kinetoplasts.

All of these organisms contain hair-like structures that extend from their flagella. Some are photosynthetic and some are not.

Water molds (oomycetes), diatoms, and brown algae.

Water molds damp areas and form filamentous structures that form ‘cottony tufts’.

Diatoms are marine and fresh water photosynthetic stramenopiles. They produce beautiful shells made from silica.

Brown algae is abundant in temperate marine coastal areas, and grows as much as 1 meter per day and forms giant kelp forests.

They are single celled protists that are characterized by small cavities just within their cells

The dinoflagellates, apicomplexans, and ciliates.

Most of the dinoflagellates perform photosynthesis, and all contain a pair of flagella.

They are all unicelluar and form a complex of fresh water and marine organisms. The ciliates are sorted by extensive fields of cilia.

They have wispy psuedopods extending from their plasma membrane that project from their shells.

The foraminiferans produce a chalky shell, whereas the radiolarians have a glass shell made from silica.

Amoebozoans can be found in both aquatic and in terrestrial environments.

These organisms have pseudopods or finger-like projections that they extend for movement or to feed with.

The amoeba and the slime molds.

They are shell-less single celled protists that are abundant in fresh water ponds, most capture food through phagocytosis

A process where the psuedopods are wrapped around a food item and is brought into the cell for digestion.

The mobile feeding stage, and as a fruiting body.

Slime molds act both independently, and colonially or even as a single multicelled organism.

A plasmodial slime forms that contains thousands of fused individuals that oozes along the forest floor.

They act as cells that live independently in the soil.

Are an abundant group of multicellular photosynthetic marine protists. All contain sometype of red pigment (which masks the chlorophyll)

There are multicellular and single-celled green algae. All are aquatic, including some marine species.