BIOL 150 Lecture Notes - Lecture 1: Motility, Alveolate, Lignin

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pinkimpala244

24 Dec 2015

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Fungi are more closely related to animals then plants. Made up of hyphae (very then strands) and mycelium. Characteristics of fungi (structure): filamentous bodies, cell walls of chitin, absorptive heterotrophs (how they feed, reproduction is sexual or asexual. They don"t have digestion systems so they exude digestive enzyme into there environment and digest what they want to eat. External digestion (live in their food); parasitic, decomposers, or predatory! Some can go back and forth between the two. Reproduction and fungal spores: non-motile reproductive structures, can generate millions, carried miles by wind. Fungal taxonomy: used to be classi ed by their reproductive structures; now use dna. Basidiomycetes (club fungi): most lignin digesters are in this group; can be toxic &or. Ascomycetes (sac fungi: morels, dutch elm disease, ergot fungus, penicillin, baker"s and brewer"s yeast. * fungi produce secondary compounds medicinal (ex. penicillin) * fungi can be parasites on plants and animals!

Related Questions

1. Discuss and decide upon characteristics that define each of the following broad groups

(domains, kingdoms) of organisms in order to attempt to define these major groups of life

on the planet. Although many characteristics may overlap from one group to the next,

attempt to define some traits that could be used to definitively (exclusively) place an

organism into a specific group. Finally, for each, what would the small subunit ribosomal

rRNA gene sequence tell us?

Viruses

Bacteria

Archaea

Protists (algae, protozoa)

Fungi

Animals

Plants

2. For the previous groups, which include representatives of ones that live as part of the

âhuman ecosystemâ? Provide some examples of each and where they can be found,

including both those that are part of our normal microbiota (i.e., not pathogens) and some

that are.

3. Considering the above and what weâve covered about these groups of organisms,

identify some structures/processes that hypothetically could be used to inhibit or kill

different types of pathogens without (hypothetically, at least) harming the human host.

4. Consider the microbial world. Which has a greater impact or importance â pathogens,

or benign microbes? Explain, giving examples.

5. A number of antibiotics target the bacterial 70S ribosome, exploiting structural

differences from the 80S ribosome found in humans and other eukaryotes. Although

effective at killing bacteria, these drugs can still have some toxicity to humans. In the

context of the endosymbiotic theory of evolution, provide a hypothesis as to why this

might be.

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BIOL 150 Lecture Notes - Lecture 1: Motility, Alveolate, Lignin

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