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Fungus

Protista and Fungi Notes

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Biology
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Biology
reproduction
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Protista
Tree of life
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Ascomycota
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Microorganism
Spore
Fungus

19.1: Protists The World of Protists What is a Protist? Kingdom Protista contains the most diverse group of organisms of all kingdoms Most are unicellular (diatoms), but some are multicellular (giant kelp). Some are heterotrophs, some are autotrophs and others are both. The characteristic that all protists share is that they are eukaryotes Protists are divided into animal-like protists, funguslike protists and plantlike protists. Protozoa: animal-like protist, all are unicellular Algae: plant-like protists, do not have roots, stems and leaves Unicellular algae produce most of the world?s oxygen and are the basis for aquatic food chains Fungus-like protists are able to move at some point in their life and do not have chitin in their cell walls What is a protozoan?

Fungi Notes

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fungi
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Tree of life
Ascomycota
Hypha
Basidiospore
Asexual reproduction
Spore

20.1: Fungi What is a fungus? The Characteristics of Fungi Fungi are eukaryotes, use spores to reproduce and are heterotrophs. Fungi need moist, warm places to grow Most are multicellular, yeasts are unicellular Hyphae: branching threadlike tubes that make up the bodies of multicellular fungi Fuzzy looking molds have loosely tangled hyphae. The stalk and cap of mushrooms are closely packed hyphae. Mycelium: a complex network of branching hyphae may serve to anchor the fungus, invade food sources, form reproductive structures Cell walls of must fungi contain a complex carbohydrate called chitin Cross walls called septa divide hyphae into individual cells that contain one or more nuclei Pores in the septa let cytoplasm, organelles and nutrients flow throughout the fungus

Viruses, Prokaryotes, Protists, and Fungus Study Guide

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Biology
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microbiology
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bacteria
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cell
Protist
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Bacteriophage
health

Viruses, Prokaryotes, Protists, and Fungus Study Guide Discovery of Viruses : ? While studying the tobacco mosaic disease that affects tobacco plants, scientist Dmitri Ivanovsky passed extracts of diseased tobacco leaves through filter pores small enough to strain out bacteria ( which was thought of as being pathogens) ? After realizing that the strained substance (thought to be disease free) could STILL pass on the disease, it lead him to believe that the pathogen was NOT bacteria?but what was it? Structure of Viruses : ? Basic viral structure includes genetic material (either DNA or RNA ? not both) surrounded by a protein called capsid. ? In some viruses, the capsid is surrounded by a lipid envelope that surface from which

Fungus Lecture

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Biology
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Dimorphic fungi

Lecture 5 ? Kingdom of Fungi HW 1. Explain what a pseudohypha is. -A chain of yeast formed when buds remain attached in a row. 2. Explain what a ?dimorphic fungus? is. -It can take either form (yeast or hyphae), depending upon growth conditions, such as changing temperature. 3. What are mycoses? Fungal infections in the way the agent enters the body and the degree of tissue involvement. 4. What are the three most common sexual spores? -Zygospores, ascospores, and basidiospores 5. Give six types of asexual mold spores. -Arthrospore; Chlamydospore, Blastospore, phialospore, micro/macroconidium; porospores 6. What are zygospores?

Fungi Problem Set

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Environment

Christina Krucylak Fungi Problem Set AP Biology April 2, 2013 Fungi are heterotrophs and therefore cannot make their own food, like plants can. They absorb nutrients from the outside environment. They use enzymes to either breakdown complex molecules into simpler ones for easier absorption or to break down cell walls or membranes to absorb nutrients from a host. Fungi have a wide range of ?hosts? and they can range from parasitic relationships to mutualistic ones. Hyphae are a network of tubular membranes surrounding the plasma membrane and cytoplasm of cells. This network is both above and below ground. A mycelium is more or less the subterranean part of a hyphae tube network. A mycelium infiltrates the material on which the fungus feeds off of.
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