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Objectives : Differentiate between animal and plant cells. Catalyst : Make a Venn Diagram and list 5 items for prokaryotes and eukaryotes. Repeat for plant and animal cells. Cells. Prokaryotic. Eukaryotic. Animal Cells. Plant Cells. Prokaryote: -has no organelles (no nucleus).
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Objectives: Differentiate between animal and plant cells Catalyst: Make a Venn Diagram and list 5 items for prokaryotes and eukaryotes. Repeat for plant and animal cells.
Cells Prokaryotic Eukaryotic Animal Cells Plant Cells
Prokaryote: -has no organelles (no nucleus) Prokaryote vs. Eukaryote Both: -are living -have DNA -are cells Eukaryote: -has organelles (has a nucleus)
Plant Cells -have chloroplasts and cell walls -can make their own food through photosynthesis -have large vacuoles to store water V. Plant vs. Animal Cells Animal Cells -have centrioles used in cell division -can’t make their own food Both Plant & Animal Cells -both have: Plasma membranes Mitochondria Cytoplasm Nucleus’ Nucleolus’ Golgi E.R. DNA -both are living
Overhead Hints for… • Largest land animals alive today • Gestation period is 22 months • May live as long as 70 years or longer!
mystery organism… • Unlike most mammals, which grow baby teeth and then replace them with a permanent set of adult teeth, this animal has cycles of tooth rotation throughout their entire life • Guess now
mystery organism… Elephant
mystery organism… Elephant
Scientific Method • If you got a question needs an answer you see,Gotta gather information in the library.Oh, why must I do it this way?Hey, must be the method! • Hypothesize what the answer could be, then perform an experiment 1,2,3.Oh, why must I do it this way?Hey, must be the method! • Record the data in the data sheet.Draw up some conclusions and then repeat.Oh, why must I do it this way?Hey, must be the method!
Need a Volunteer • Say the color of each word on the slide as fast as you can… • Example – “Napkin” - White
RED BLUE YELLOW YELLOW GREEN RED BLUE
Let’s try it again Hot-stuff • Say the color of each word on the slide as fast as you can… • Example – “Napkin” - White
RED BLUE YELLOW YELLOW GREEN RED BLUE
Trying to understand addition with examples: 3 + 5 = 8 7 + 127 = 134 63 + 2956 = 3019 etc…. A possible examination question to determine if students have mastered addition: 154 + 382 = ? Don’t just memorize the examples. Understand the process! Put everything in context.
One More fun game • See how many of the words you can memorize…
brain nerve thumb elbow wrist
brain nerve thumb elbow wrist
Try one more time… • See how many of the words you can memorize…
ldrmq hnbfg xwgcb zjrxp Hello
Four proven keys to success in Med 101 1. Understand the material Don’t study for the grade 2. Understand the context Don’t study isolated facts 3. Come to every class Don’t try to memorize the text book 4. Review each class day Don’t fall behind
Medication Errors Medical Mistakes U.S. Pharmacopeia study Harvard University study December 2002
“Those who do not stop asking silly questions become scientists.” physicist Leon Lederman
TODAY’S INTERESTING SCIENCE Every hour one billion cells in the body must be replaced
Are these things alive? Plant air wind animals bacteria viruses protists rocks fungi soil fire water
Are these things alive? Plant air wind animals bacteria viruses protists rocks fungi soil fire water Living Living Living Living Living
Ex. of Life and Nonlife: Living Things: plants, animals, protists, fungi, bacteria Nonliving Things: viruses, fire, rocks, soil, air, water, sunlight This is a picture of Mycobacterium tuberculosis a bacteria which causes the disease tuberculosis. What happens when you get this disease?
Characteristics of Life Living things are organized at different levels. Organization of living things: -Cell(Smallest)TissueOrganOrgan SystemOrganism(Biggest) -A cell is the smallest living thing.
Cell Theory • All living things composed of one or more cells • Cells are basic units of structure and function in an organism • Cells come only from the reproduction of existing cells
Microscopes Original Microscope from 1600’s Compound light microscope used today.
III. Types of Cells -There are two types of cells: 1. Prokaryotic cells do not have a nucleus or any other membrane-bound organelles. Ex: Bacteria
Two Types of Cells: 2. Eukaryotic cells do have a nucleus. Ex: Plant and animal cells.
Prokaryote: -has no organelles (no nucleus) Prokaryote vs. Eukaryote Both: -are living -have DNA -are cells Eukaryote: -has organelles (has a nucleus)
Prokaryotic Cells No Nucleus No Membrane-bound organelles Very Small Older Only Bacteria Differences between Prokaryotic & Eukaryotic • Eukaryotic Cells • Nucleus • Many organelles • Larger than Prokaryotes • Younger • All Other Cells • NOTE! Plant cells are eukaryotic
PLANT CELLS Square or “boxy” Have a cell wall Have chloroplasts Large vacuoles Usually green(because of the chlorophyll) Differences between Plant and Animal Cells • ANIMAL CELLS • Round • No cell wall • No chloroplasts • Small vacuoles
IV. Parts of the Cell -Just like our bodies, cells must have different structures which help them live. -They need their own version of skin, a stomach, blood and a brain to survive.
IV. Parts of the Cell -Organelles are small membrane-bound structures found inside the cell which have special jobs to help the cell survive.
Which part of this cell is the nucleolus? Nucleolus