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BIOL 111 Study Guide - Final Guide: Amoeboid Movement, Rhizopus, Paramecium


Department
Biology (Sci)
Course Code
BIOL 111
Professor
Suzanne Gray
Study Guide
Final

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LAB 2: Bacteria, Protists and Fungi
Bacteria:
Occur almost everywhere
Equally diverse in their ecological function
Lack a nucleus and membrane bound organelles
Types of Bacteria:
Coccus type: spherical in shape, may occur singly, in chains or clusters
Bacillus type: rod shaped, may occur singly or in chains
Spirillium: spirally curved rods, may occur singly, chains or clusters
Algae (Plant-like Protists):
Algae are a group of photosynthetic protists
Prescence of chlorophyll a
Reproductive structures which are single celled
No structures that can be regarded as roots, stems or leaves
Phytoplankton are floating algae of microscopic size
Important food resource in many countries
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LAB 2: Bacteria, Protists and Fungi
Cell Division:
Mitosis: two daughter cells are created, same number of chromosomes as parent
Meiosis: four daughter cells, each have half the number of chromosomes are parent
Haploid: single set of chromosomes
Diploid: double set of chromosomes
Same number of ploidy means the same number of chromosome sets.
Oedogonium:
Multicellular organization in the form of un-branched chains of cells called a
filament
Parenchymatous Thallus: undifferentiated body that is usually flat and
prostrate
Contains vegetative cells which possess a single nucleus and net like
chloroplasts
Asexual reproduction: any cell can
produce a motile zoospore, which will then
divide by mitosis
Sexual reproduction: Antheridia (male
reproductive structure) release sperm to
fertilize oogonia (female reproductive
structure) each oogonium produces a single
egg
Homothallic: female and male structures are produced on the same filament
Heterothallic: female and male structures are produced on different filaments
Fertilization results in a diploid
zygote; zygote undergoes
meiosis resulting in four haploid
zoospores that develop into new
filaments.
oogonium
antheridia
vegetative cells
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