What are Protozoa? proto = first zoa = animals single-celled eukaryotic organisms.
Biology Domain 2 Organisms. Biology Standard 2: Students will derive the relationship between...
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![Page 1: Biology Domain 2 Organisms. Biology Standard 2: Students will derive the relationship between single-celled and multi-celled organisms and the increasing.](https://reader035.fdocuments.us/reader035/viewer/2022062401/5a4d1b327f8b9ab05999b6cb/html5/thumbnails/1.jpg)
Biology Domain 2Organisms
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Biology Standard 2:
• Students will derive the relationship between single-celled and multi-celled organisms and the increasing complexity of systems.
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A. Basic Stuff
• 1. Energy• a. needed by all organisms• b. runs chemical reactions that
sustain life (metabolism)
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2. Obtaining Energy
• a. Autotrophs (Producers)• 1. use energy from sunlight to
make food• 2. photosynthesis• 3. ALL plants, algae (protists),
some bacteria
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• b. Heterotrophs (Consumers, Decomposers)• 1. must find energy elsewhere (eat or
absorb nutrients)• 2. ALL animals, ALL fungi, some
protists and bacteria
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Try This!
• The substances that most directly control the rate of reaction during cellular respiration are known as– A. enzymes– B. phosphates– C. monosaccharides– D. disaccharides
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B. Energy Transformations
• 1.Energy and matter cycle through ecosystems– Food chain, food web, energy
pyramid• 2. SUNlight is the ultimate source
for energy• 3. SunProducersConsumers
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C. Energy in Cells
• 1. All cells must turn food into usable energy
• 2. Food can be made through photosynthesis (autotrophs) or obtained elsewhere (heterotrophs)
• 3. Cellular Respiration turns food into usable energy
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4. Cellular Respiration
• a. food energy is turned into usable energy in the form of ATP (adenosine triphosphate)
• b. Aerobic Respiration—requires OXYGEN
• c. occurs in the “mighty” mitochondria of ALL organisms!
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• d. glucose (food) + oxygen (O2) Carbon Dioxide (CO2) + Water (H2O) + ATP (ENERGY)
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Try This!• Which statement best describes
cellular respiration?– A. It is the change of stored chemical energy
from food into ATP. – B. It is the conversion of light energy into
chemical energy.– C. It is the excretion of materials out of the cell
of an organism.– D. It is the release of oxygen from the cells of
an organism.
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5. Where does food energy come from?
• a. Heterotrophs• 1. eat food (consumers) • 2. absorb nutrients (decomposers)
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• b. Autotrophs• 1. Make food using energy from
sun• 2. Photosynthesis• a. occurs in chloroplasts.• b. energy from sun turned into
glucose
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• c. Carbon Dioxide (CO2) + Water (H2O) + energy (sun)
glucose (food) + oxygen (O2) • d. cellular respiration still MUST
occur to turn food energy into ATP
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Try This!• During photosynthesis, plants use the
sun’s energy, along with CO2 and H2O, to produce high-energy sugars. The waste product they release in this process is– A. nitrogen– B. oxygen– C. carbon dioxide– D. methane
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6. Energy Use
• a. ATP is usable energy• b. ADP-ATP Cycle• c. Adenosine TRIphosphate
Adenosine DIphosphate
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D. Classification of Organisms
• 1. Scientists classify organisms so that they can easily find information about them
• 2. Taxonomy—study of classification
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3. Linnaeus
• a. Developed modern Taxonomy system
• b. Kingdom, Phylum, Class, Order, Genus, Species
• c. Binomial Nomenclature—scientific names (Genus species)
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4. Specifications for Classification
• a. Organisms are grouped based on similarities and evolutionary history
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b. Characteristics
• 1. Physical Similarities• 2. Biochemicals (DNA, proteins)• 3. Embryology (Development)• 4. Chromosome Structure• 5. Reproduction
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Canis familiaris Canis lupusCanis latrans DOG COYOTE WOLF
1. Physical Similarities
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2. Biochemicals
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3. Embryology (Development)
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4. Chromosome Structure
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5. Reproduction
Mule—Offspring of horse and donkey is sterile
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DOMAIN
KINGDOM
CELL TYPE
CELL STRUCTURES
NUMBER OF CELLS
MODE OF NUTRITION
EXAMPLES
Bacteria
Eubacteria
Prokaryote
Cell walls with peptidoglycan
Unicellular
Autotroph or heterotroph
Streptococcus, Escherichia coli
Archaea
Archaebacteria
Prokaryote
Cell walls without peptidoglycan
Unicellular
Autotroph or heterotroph
Methanogens, halophiles
Protista
Eukaryote
Cell walls of cellulose in some; some have chloroplasts
Most unicellular; some colonial; some multicellular
Autotroph or heterotroph
Amoeba, Paramecium, slime molds, giant kelp
Fungi
Eukaryote
Cell walls of chitin
Most multicellular; some unicellular
Heterotroph
Mushrooms, yeasts
Plantae
Eukaryote
Cell walls of cellulose; chloroplasts
Multicellular
Autotroph
Mosses, ferns, flowering plants
Animalia
Eukaryote
No cell walls or chloroplasts
Multicellular
Heterotroph
Sponges, worms, insects, fishes, mammals
Eukarya
Classification of Living Things
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F. Organization in Organisms
• 1. CellsTissuesOrgansOrgan SystemsOrganism
• 2. Systems• a. Circulatory• 1.inverebrates—open• 2. vertebrates--closed
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• b. Respiratory• 1. invertebrates—diffusion• 2. vertebrates—gills and lungs• c. Digestive• 1.stomach, esophagus, mouth• 2. intestines—absorption of nutrients• 3. liver—filters wastes
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• d. Nervous• 1. brain, nerve cells• 2. cephalization—concentration of
nerves in anterior (top or front) region
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• e. Support• 1. invertebrates—EXOskeleton• 2. verebrates—ENDOskeleton
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• f. Many other systems• 1. all systems work together to
maintain HOMEOSTASIS• 2. respiratory brings in oxygen,
circulatory circulates the oxygen, nervous gives directions!
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Try This!
• When scientists place a species on a certain part of a phylogenetic tree, which of the following are they least likely to consider?– A. morphology (physical appearance)– B. DNA similarities– C. fossil record– D. population size
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G. Dichotomous or Classification Key
• 1. A key is a list of characteristics used to classify an organism.