BELL RINGER [3 Minutes] Do Vocabulary K/S/H/D Write one thing that is MICROSCOPIC Write one thing that is MACROSCOPIC.

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Presentation transcript:

BELL RINGER [3 Minutes] Do Vocabulary K/S/H/D Write one thing that is MICROSCOPIC Write one thing that is MACROSCOPIC

MYP Biology: Introduction to Cells

What are the points of the Cell Theory? 1.The cell is the most basic unit of LIFE. 2.All ORGANISMS are made up of cells. 3.All new cells come from PRE-EXISTING cells

There are two main types of cells Prokaryotic cells (Greek for ‘before nucleus’) Eukaryotic cells (Greek for ‘true nucleus’)

What do all cells have in common? DNA: The genetic material / blueprint of the cell Cytoplasm: A jelly-like substance the fills the inside of the cell and contains enzymes

What do all cells have in common? Cell Membrane: A protective barrier that controls what goes in and out of the cell Ribosomes: Tiny cell parts that produce proteins

Prokaryotic Cells Prokaryotic cells are the smaller, simpler variety of cells. They have no nucleus or any other specialized, membrane-bound organelles. Only unicellular bacteria are made up of prokaryotic cells.

Prokaryotic Cells

Eukaryotic cells Eukaryotic cells are the larger, more complex variety of cells. Their DNA is contained in a section of the cell called the nucleus. They also contain a different types of membrane-bound organelles that perform specific functions.

Eukaryotic cells

Compare & Contrast Prokaryotes and Eukaryotes SIZENUCLEUS?ORGANELLES?DNA? PROKARYOTIC 1-10 micronsNONO (tiny cell parts)YES (free-floating) EUKARYOTIC micronsYES YES (in nucleus)

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