Biology Notes 1-28-08

Biology Notes 1-28-08 - -hyphae with partial septa, no...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology Notes January 28, 2008 Fungi: -heterotrophs -nonphotosynthetic -decomposers with external digestion -cell walls of chitin (same an insect exoskeleton) -filamentous cell with tip growth (hypha) -economically very important (fermentation, antibiotics) -zygotic life cycles, with varying degrees of specialization -fungi can penetrate the substrate Differences between groups: -Fungi vary in terms of their structure and reproduction. Zygomycota: -‘bread mold’ -simple construction, no cross walls -haploid cell that does not do cytokinesis so there are many nuclei in the growth tips -meiosis produces spores Ascomycota: -“sac fungi” or “cup fungi” -similar to zygomycota in +/- mating strains -cellular differences:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: -hyphae with partial septa, no nuclei transfer between the septa-at the time of sexual reproduction 2 important features: 1) heterokaryon - A cell having two or more genetically different nuclei. 2) form a fruiting structure from heterokaryotic hyphae Biology Notes January 28, 2008 The zygote is formed in the asci (ascus), this is where meiosis occurs. Vocabulary: Asci - the sac in ascomycetes in which the sexual spores are formed. heterokaryon - A cell having two or more genetically different nuclei. Heterotrophs - An organism that cannot manufacture its own food and instead obtains its food and energy by taking in organic substances, usually plant or animal matter....
View Full Document

Page1 / 2

Biology Notes 1-28-08 - -hyphae with partial septa, no...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online