Transcript Single Cell Organisms

WEEKLY TOPIC:
Classifing living Things
Today You Need Out:
1. Agenda Book
2. Unicellular Organisms
guided notes
Week’s Agenda:
1. Review of what is a living
organism is
2. Introduction to unicellular
organisms
Homework:
Cell project
Warm Up
What is the importance of a
dichotomous key?
Weekly Vocabulary:
What is an living
organism review
Living things
▶ 1. living things
are made of cells
▶ 2. living things
grow and
develop
▶ 3. living things
reproduce
▶ 4. Living things
use energy
▶ 5. Living things
respond to their
environment
Living things
Cells are basic building blocks of
life
Autotrophs are organisms that
make their own energy
Heterotrophs are organisms that
rely on other living things to gain
energy
Living things
Taxonomy branch of science
which classifies organisms by
appearance and behavior
Dichotomous key is a tool that
allows us to determine the
identity of organisms
King Phillip Came Over For Good Spaghetti
PROTISTS 4+
EUGLENA, AMOEBA, PARAMECIUM,
VOLVOX
What is a protist?
.
• Protist—an organism
from the Kingdom
Protista
• Very diverse group of
single-celled organisms.
• Eukaryotic (They have
nuclei.)
• `
Common Protist
Draw the table. Use a full page. 5 columns, 5 rows.
Protist
Name
Euglena
Amoeba
Paramecium
Volvox
Sketch
Movement
Food
source
(Energy)
Special
Features
EUGLENA
Euglena
• Found in calm fresh and saltwater
• Autotroph – gets energy via photosynthesis
• Heterotroph —also gets nourishment
heterotrophic like animals
• Has features of both plants and animals
• Kingdom Protista
Reproduces asexual
•
Euglena
•
•
•
•
•
Moves by a flagellum
eye spot
Contains chloroplasts
Common in fresh water
No cell wall so it can change shape.`
AMOEBA
• Found in
freshwater and
saltwater around a
lot of dead and
decaying material.
• Hunter
• Can be parasite in
humans
Amoeba
• Moves by cytoplasmic streaming
• Surrounds food and engulfs it using
pseudopods. The food is then stored
and digested in vacuoles.`
Amoeba
•
•
•
•
Changes shape drastically
Heterotrophic
Eats bacteria, algae, and other protists
Reproduces asexually
•Movement- The cell shapes itself into
pseudopods (false feet)
•amoeba video
Amoeba
• Reproduction- - asexual
PARAMECIUM
• Found in freshwater.
• This is a single-celled
organism.
• Cilia sweep food into
food passageway.
•
V
Paramecium
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•
•
•
Shape of a pill capsule
Heterotrophic
Relatively large
Common in pond scum and
freshwater
• Has two nuclei (macro and
micro)`Sexual reproduction
Paramecium
• Uses cilia to sweep food into the
oral groove
• Feeds on micro-organisms like
bacteria, algae, and yeasts
• Is covered in cilia so it spirals
through water`
VOLVOX
• Found in ponds
ditches and puddles.
• Composed of a
colony of more than
50,000 tiny cells
• Often called algae.
• `
Volvox continued…
• photosynthesis and
flagella help bring
in nutrients.
• Eyespots sense
light.
• `
Volvox continued…
• Movement- Many flagella
help move the colony.
• Reproduction- asexual
and sexual
Volvox
• A spherical colony of
up to 50,000 cells
• Contains chloroplasts
•Moves and acts as one multicellular organism
but one cell can survive independent of the
colony`
Volvox
• Type of green algae
• freshwater – ponds, ditches,
puddles, lagoons
• Colonies use flagella to swim
• Cells have eyespots
• Makes food by photosynthesis
Volvox Videos
volve.
Watch them re
• video 1
• video 2
Common Protists
Protists
Groups
Features
Sketch
Movementand
Food
Special
Protist
Draw Table below on Page
?
source
(Energy)
Euglena
Amoeba
Paramecium
Volvox
Features
Common Protists
Protist
Sketch
Movement
Food source
(Energy)
Specialized
Features
Protists Groups and Features
Unicellular
Flagellum
Feeds on other
organisms; Also
makes its own
food by
photosynthesis
Unicellular
Pseudopods
Feeds on other
organisms
Unicellular
Cilia
Feeds on other
organisms
Lives in colonies
Flagella
Makes its own
food by
photosynthesis
Euglena
Amoeba
Paramecium
Volvox
Eyespot
Oral groove and
contractile
vacuole
Volvox