Today

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Today

• Go over syllabus
• Hand-out Experiment for Lab Report 1
• Short Lecture
• Microscope
• Algae and Cyanobacteria
• Lab
• Algae and Cyanobacteria

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Instructor Information

• Name Laurel Hartley
• Phone [phone]
• E-mail hartley_at_cnr.colostate.edu
• Office E440 Zoology
• Office Hours Wed 1-3 or by appt
• Class website
• http//rydberg.biology.colostate.edu/hartley

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Student Information

• Name
• Phone
• E-mail
• Career Goal
• Learning Issues

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Lab Report 1

• Handout experiment assignments today
• Look it over and discuss with your group
• For next week
• Everyone bring an article or reference to share
  with your group
• Supplies will be handed out
• Hypothesis and protocol due by end of lab next
  week

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Microscope Review
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• 5 Kingdom System
• Monera
• Protista
• Plantae
• Fungi
• Animalia

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• Domains
• Archea (prokaryotes)
• Eubacteria (prokaryotes)
• Eukarya (eukaryotes)

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Domain Eubacteria /Kingdom Monera 1)
Cyanobacteria (blue-green bacteria)
Domain Eukarya /Kingdom Protista(plant-like)1)
green algae2) diatoms3) red algae4) brown algae
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Cyanobacteria

• Domain Eubacteria

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Cyanobacteria

• Domain Eubacteria
• Kingdom Monera

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Cyanobacteria

• Domain Eubacteria
• Kingdom Monera
• All are prokaryotes

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Cyanobacteria

• Domain Eubacteria
• Kingdom Monera
• All are prokaryotes
• The only bacteria capable of photosynthesis

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Cyanobacteria

• Domain Eubacteria
• Kingdom Monera
• All are prokaryotes
• The only bacteria capable of photosynthesis
• Used to be considered algae

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Cyanobacteria- blue-green bacteria

• Make a wet-mount of the pond water and use the
  key to find some cyanobacteria

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Algae

• Domain Eukarya

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Algae

• Domain Eukarya
• Kingdom Protista

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Algae

• Domain Eukarya
• Kingdom Protista
• All are eukaryotes

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Algae

• Domain Eukarya
• Kingdom Protista
• All are eukaryotes
• Almost all are photoautotrophs

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Algae

• Domain Eukarya
• Kingdom Protista
• All are eukaryotes
• Almost all are photoautotrophs
• Most are aquatic, some found on land

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Algae

• Domain Eukarya
• Kingdom Protista
• All are eukaryotes
• Almost all are photoautotrophs
• Most are aquatic, some found on land
• Some are unicellular, others are multicellular

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Algae

• Domain Eukarya
• Kingdom Protista
• All are eukaryotes
• Almost all are photoautotrophs
• Most are aquatic, some found on land
• Some are unicellular, others are multicellular
• Some Exhibit Alternation of Generations (a
  multicellular haploid stage and a multicellular
  diploid stage)

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Algae

• Domain Eukarya
• Kingdom Protista
• All are eukaryotes
• Almost all are photoautotrophs
• Most are aquatic, some found on land
• Some are unicellular, others are multicellular
• Exhibit Alternation of Generations (a
  multicellular haploid stage and a multicellular
  diploid stage)
• Green Algae, Diatoms, Red Algae Brown Algae

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• Chlorophyta Ancestors of higher plants

Single cells (ex. Chlamydomonas)
Multicellular, differentiated (ex. Ulva)
Colonies (ex. Volvox)
Filaments (ex. Spirogyra)
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Pond Scum
symbiotic relationship between green algae and
fungus is called _________________
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Pond Scum
symbiotic relationship between green algae and
fungus is called Lichen
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To Do

• Make a wet mount of pond water and use the key
  to identify some species
• Look at slides of Spirogyra (conjugation)
• Look at herbarium specimens to see larger
  examples

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Bacillariophyta the largest group of algae

• Common Name diatoms

What are their cell walls made of?
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Diatoms

• 20-25 of all organic carbon fixation could be
  from diatoms
• Large of plankton is diatoms
• Fossilized diatoms make up diatomaceous earth
  used for making abrasive cleaners, reflective
  paint, filters etc.
• Some store food in the form of oil cod liver
  oil comes from cod that eat lots of diatoms
• NREL in Golden,CO looking for ways to make
  biofuel from diatoms

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To Do

• Make a wet mount of diatomaceous earth
• Look at prepared slide of diatoms
• Look at the products made from diatomaceous
  earth
• Remember that diatom cell walls are made of
  silica!!!

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Rhodophyta The Red Algae
All are mulicellular seaweed
Pigment called phycoerythrin makes them red.
Found deeper than most other algae because this
pigment can pick up light that penetrates deeper
into the ocean.
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Products from Red Algae
Nori
Irish Moss is used to make carageenan - used as
thickening agents, emulsifiers and to prevent the
formation of ice crystals in frozen deserts.
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To Do

• Look at herbarium specimens of red algae
• Look at products made from red algae

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Phaeophyta the largest algae

• Common Name brown algae, kelp, seaweed

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Phaeophyta the largest algae
Brown Algae All mulicellular seaweed
kelp Have parts that look plant-like blade,
stipe, holdfast
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Products from brown algae
Also Algin a thickening agent
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To Do

• Look at herbarium specimens (make sure to
  identify the blade, stipe, and holdfast)
• Look at products from brown algae

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Sample Quiz Question

• 1. a. What are the cells walls of diatoms
  made of?
• b. Name a product that contains
  diatomaceous earth. c. To what Kingdom do
  diatoms belong?

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Sample Quiz Question

• State one difference between algae and
  cyanobacteria.
• State one similarity between algae and
  cyanobacteria.

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Sample Quiz Question

• Give both the common and scientific name of the
  phylum of algae that contains members with the
  pigment phycoerythrin.

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Next Week

• Quiz
• Lab Topics 12, 14, 15
• Bring in an article or reference to share with
  your group