BIOL 111 Lecture Notes - Lecture 2: Lysis, Chloroplast, Bioaccumulation

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22 Jul 2016
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Green algae (Chlorophytes)
o Photoautotrophs
o Diverse morphology
! Unicellular
! Colonial
! Multicellular filaments
! Multicellular sheets
o Freshwater, marine, terrestrial
o Can make daughter colonies and then mother cell will lyse
o Share ancestor with land plant
! Cellulose in cell wall
! Store glucose as starch
! Have chlorophyll a and b
! Alternation of generations
Red Algae
o Multicellular, marine (most tropical)
o Photoautotrophs
o Accessory pigments
! Colour
! Ability to use different light wavelengths
o Source of agar
o Some secrete CaCO3
! “coralline algae”
CHROMALCEOLATES
Usually have cellulose in their cell walls
Alveolates have sacs (aceoli) just below their plasma membrane
(featured: ciliates, dinoflagellates and apocomplexans)
Stramenophiles, most have flagella, one with hairs (featured:
diatoms, brown algae and oomycetes)
Ciliates
o Possess cilia for locomotion and feeding
o Unicellular, aquatic
o Heterotrophs, some have symbiosis with photoautotrophs
o trichocyts are tiny spears
o has complex feeding and excretions structures
o note contractile vacuole, necessary as ciliate is hypertonic in hypotonic environment
43
Chromalveolates
Usually have cellulose in their cell walls
Alveolates have sacs (aveoli) just below
their plasma membrane
Featured groups: all
Stramenophiles, most have two unequal 2
flagella, one with hairs
Featured groups: Diatoms,
Brown algae & Oomycetes
44
Paramecium
gullet
micro & macronuclei
Ciliates
possess cilia for
locomotion & feeding
unicellular, aquatic
heterotrophs, some have
symbiosis with
photoautotrophs
more complex structure
protection: protein pellicle
control: 2 nuclei types
feeding: oral groove, gullet
defense: trichocysts
–H
2O balance: contractile
vacuole
43
Chromalveolates
Usually have cellulose in their cell walls
Alveolates have sacs (aveoli) just below
their plasma membrane
Featured groups: all
Stramenophiles, most have two unequal 2
flagella, one with hairs
Featured groups: Diatoms,
Brown algae & Oomycetes
44
Paramecium
gullet
micro & macronuclei
Ciliates
possess cilia for
locomotion & feeding
unicellular, aquatic
heterotrophs, some have
symbiosis with
photoautotrophs
more complex structure
protection: protein pellicle
control: 2 nuclei types
feeding: oral groove, gullet
defense: trichocysts
–H
2O balance: contractile
vacuole
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