Microbiology

• Class: Myxomycetes
• - true slime mold
• - grow into a plasmodium, a giant cell containing many nuclei
• (Plasmodial slime mold)

- Any of various green, red or brown organisms that grow mostly in water, ranging in size from single cells to large spreading seaweeds

- Manufacture their own food through photosynthesis and release large amounts of O2 into the atmosphere

- Form a major part of marine plankton

- Considered to be protists

- One celled aquatic or parasitic protozoans of the genus Amoeba

- having no definate form and consisting of a mass of protoplasm containing one or more nuclei surrounded by a flexable outer membrane

- move by means of pseudopods (crawling)

- serve as a source of energy for physiological reactions, expecially muscle contraction

- differ from true slime molds in being cellulare and nucleate throughout life.

- Any of several green pigments found in photosynthetic organisms, such as plants, algae and cyanobacteria

- Absorb red and blue wavelengths of light but reflect green

- When it absorbs light energy, it enters a higher energy state which it easily gives up an electron to first available electron-accepting molecule nearby

- ultamately used in synthesis of ATP, which provide energy for plant metabolism

* captures photons of light and transfers energy to mitochondria that, inturn, produce ATP

- Conduct photosynthesis

- store starch and are involved in amino acid synthesis

- have own DNA different from DNA in nucleus

- Create glucose through photosynthesis

- Any protozoan of the phylum ciliophora

- An abnormal membranous sac in the body, containing a gaseous, liquid, or semisolid substance.

- algae that produce a silicon structural matrix that settles to the ocean floor when organisms die.

- Any of various microscopic protist of the phylum Bacillariophyta that live in both fresh and marine water, have hard bivalve shells composed mostly of silica, and often live in colonies.

- Any of various protozoans of the subphylum Mastigophora that move by means of one or more flagella

are all non-motile

- The synthesis of complex organic materials, especially carbohydrates, from CO2, H2O, and inorganic salts, using sunlight as the source of energy and with the aid of chlorophyll and associated pigments.

- produce more O2 than all of the Earths forests and form the basis for the marine food chain.

- form the beginning of the food chain for aquatic animals and fix large amounts of carbon, which would otherwise be released as CO2.

- A mass of protoplasm having many cell nuclei but not divided into separate cells

- formed by amoeba-like cells and characteristic of active, feeding phase of certain slime molds

-Any of various single-celled organisms (protozoans) that exist as parasites in vertebrate animals, one of which causes malaria.

- Are eukaryotes and live in water or watery tissues of organisms

-Some protists resemble plants and produce food by photosynthesis, while others resemble animals in consuming organic matter for food

- Include: protozoans, most algae, diatoms, oomycetes and slime molds

- Unicellular protists that lack photosynthetic ability

- Any of a large group of one-celled organisms (protists) that live in water or as parasites

- Include: amoebas, flagellates, foraminiferans, and ciliates

- Any of various organisms that exist as slimy masses and are commonly found on decaying plant matter (not a fungi)

1. Cellular slime mold: live as single, amoeba-like cells moving about feeding on bacteria. (Grows as a group of individual cells)

2. Plasmodial slime mold (acellular): exist as a mass of amoeba-like protoplasm (plasmodium) that contain many nuclei within a single cell membrane. (collection of cells that live together)

- no appendages

- Asexual form of certain sporozoans, such as the schizant of the plasmodia of malaria and related parasites

- the vegetative or growing form of Protozoan

(Cyst=dormant form of Protozoan)

- Dormant form of Protozoan

reproductive cells are flagellated

- these molds grow into masses of white threads on decaying organic material

- Most important = Phytophthora infestations which caused the Potato blight in Ireland

1. Algae: unicellular but can grow in large groups, such as seaweed

2. Protozoa: unicellular protists that lack photosynthetic ability to use their organelles of motility for both locomotion and food gathering

• 3. Slime molds: Not a fungi but grow on dead matter and produce spores
• - some forms have flagella or pseudopodia unlike fungi

1. Flagella: beat back and forth by sliding pairs of microtubules against one another (fish tail)

2. Cilia: shorter than flagella

3. Pseudopodia: cell membrane extensions that move forward to attach to a surface so that the rest of the cell can be pulled into that position in a crawling motion

- Algae along with other organisms in plankton, use the Sun's energy to produce most of the organic material and oxygen available in the ocean

- Mostly cellulose, with agar and pectin

- Members of the diatom subgroup of algae have a silicon cell wall similar to silicon found in glass and rocks

- Through the chlorophyll in organelles called chloroplasts that absorbs the energy in sunlight.

- Chlorophyll transfers energy onto mitochondra that convert it into chemical energy ATP.

- According to their locomotion apparatus.

• 1. Flagella
• 2. Cilia
• 3.Pseudopodia
• 4. Sporozoites-no organells of locomotion

- by locomotion apparatus, general shape and size, number of nuclei, and presence of syst forms

1. Cellular slipe mold: grow in groups of individual cells.

2. Acellular: grow into a plasmodium, a giant cell containing many nuclei