Transcript Do Now: - Ms. Cooper's 7th Grade Life Science Class

Do Now:
• In your binder, in your notes, put the date on
the right margin of your paper and answer the
following:
– What are the levels of classification in order?
(hint- there are 8 words)
– What is the scientific name for humans?
Archaea
Bacteria
Domain is the largest classification group.
Eukarya
3 Domains
• Eukarya: has a nucleus
– some are
multicellular, some
single
– Autotrophs &
Heterotrophs
• Archae: no nucleus –
one celled- live in
extreme environments
• Bacteria: no nucleusone celled- live in many
environments
Archae
In 1983, scientists took samples from a spot deep in
the Pacific Ocean where hot gases and molten rock
boiled into the ocean from the Earth’s interior. To
their surprise they discovered unicellular (one cell)
organisms in the samples. These organisms are today
classified in the domain,
archae (archaebacteria).
Archae. Archae are found in extreme
environments such as hot boiling water and
thermal vents under conditions with no
oxygen or highly acid environments.
bacteria
They are the kinds of bacteria found
everywhere and are the ones people are most
familiar with. Bacteria are classified in their
own domain because their chemical makeup
is different.
Autotrophs
•Make their own food, self
feeders
Heterotrophs
•Need food, must eat for
energy
Using a life science text book, use the table of
contents or the index to find the page with
Autotrophs and Heterotrophs.
(Hint: the glossary will not give you enough
info!)
With the people at your table, make a Venn
diagram comparing the similarities and
differences of Autotrophs and Heterotrophs. Do
not forget to write on your paper what page you
found your info on. EVERYONE needs to write!
Autotrophs and Heterotrophs - Similarities
Following are the similarities between autotrophs and heterotrophs.
Have a look at them: Autotrophs, as well as heterotrophs, are living
things and both are part of some ecosystem.
The autotrophs and heterotrophs, together form various trophic
levels in the food pyramid
Both require sunlight and water to live and obtain energy by
conversion of chemical molecules.
Autotrophs and Heterotrophs - Differences
The main difference between autotroph and heterotroph is that
autotrophs can synthesize their own food, whereas, heterotrophs
cannot. Most autotrophs contain the pigment chlorophyll, that plays a
key role in synthesis of food. Chlorophyll is absent in almost all
heterotrophs. Autotrophs obtain energy by converting inorganic raw
materials into organic compounds, whereas, heterotrophs convert
complex organic compounds into simpler ones to obtain energy.
4 Kingdoms of the Eukarya
Domain
Fungi
Plants
Animals
Protists
The Four Kingdoms
•
•
•
•
Protista
single celled, nucleus
Fungi single or multicellular, absorb food
Plantae multicellular producers
Animalia multicellular consumers
Protists
Slime molds and algae are protists. Sometimes they
are called the odds and ends kingdom because its
members are so different from one another. Protists
include all microscopic organisms that are not
bacteria, not animals, not plants and not fungi. Most
protists are unicellular. You may be wondering why
those protists are not classified in the Archae or
bacteria domains. It is because, unlike bacteria,
protists are complex cells.
They can be divided into 3
types: animal-like protozoa, the
plant-like algae, and the funguslike slime moulds
Fungi
• Mushrooms, mold and mildew are all
examples of organisms in the kingdom fungi.
• Most fungi are multicellular and consists of
many complex cells.
• (fungus)
Fungi are organisms that biologists once
confused with plants, however, unlike plants,
fungi cannot make their own food. Most
obtain their food from parts of plants that are
decaying in the soil.
Now lets see what you
know…..
Get with your table and
see if you can correctly
identify these Domains
and Kingdoms:
USE YOUR NOTES!
Write down your ideas.
1. What domain and what kingdom?
• j
Multicellular
Consumers, heterotrophs
2. What domain and kingdom?
• Single or multicellular
• Feed by absorbing
(heterotrophs)
Yeast
mushrooms
Mold
mildew
3. What Domain?
Single celled
No nucleus
Live in extreme
habitat
Hot, salty and acidic
environments
4. What domain and kingdom?
•
•
•
•
Most are single celled
Some live in colonies
DNA is in a nucleus
Odds and Ends
Kingdoms
5. What domain?
• Single celled
• No nucleus
• Normal cell wall
• Found on you,
yogurt, strep
6. What domain and kingdom?
• Multicellular
• Producers
(autotrophs)
1. What kingdom?
ANIMAL
Multicellular
Consumers
Eukarya
2. What kingdom?
• Single or multicellular
• Feed by absorbing
Yeast
mushrooms
Mold
Eukarya
FUNGI
3. What domain?
Single celled
No nucleus
Peptigoglycan cell wall
Live in extreme habitat
Hot, salty and acidic environments
ARCHAE
4. What kingdom?
• Most are single celled
• Some live in colonies
• DNA is in a nucleus
• Odds and Ends
Kingdoms
Eukarya
PROTISTS
• Single celled
5. What kingdom?
• No nucleus
• Normal cell wall
• Common bacteria
• On you, yogurt, strep
BACTERIA
6. What kingdom?
• Multicellular
• Producers
Eukarya
PLANTS