QOD: What are living things made of?

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Presentation transcript:

QOD: What are living things made of? Biology 11 Jan 2018 Sept 19, 2018

Scanning electron micrograph of some cells pneumonia Red ______ cells common soil ____________ Pseudomonas aeruginosa

They are all made up of _____… the _______________of life. CELL HISTORY: Robert Hooke (1665) Viewed slices of __________ under a microscope Observed “a lot of little boxes” The boxes reminded him of the small rooms the monks lived in He called these small boxes of cork “cells”

Over time (from 1665 – 1855), and with many observations, scientists concluded that: All ________ are made up of cells. (1838 Matthias Scheiden) All __________ are made up of cells. (1839 Theodor Schwann) AND, all cells come from existing cells. (1855 Rudolph Virchow)

The cell theory All ___________ are composed of cells. From their many observations – the fundamental concept in Biology was developed – THE CELL THEORY: All ___________ are composed of cells. Cells are the basic units of ___________ and __________ in living things. New cells are produced from _________cells.

What is a cell? A cell is the ________ unit that is ______ and can carry on all the __________of life. (__________ and ______________ are NOT cells.)

What is NOT a cell? List here ….

How are cells classified? What types of cells are there? AND How are cells classified?

Types of Cells Eukaryotic Cells Prokaryotic Cells Protists ______ Cells Plant Cells (unicellular) (animals, (all types of Humans) ________) Prokaryotic Cells ____________

Types of cells:

Eukaryotic cell examples: ______ cells: Observe the chloroplasts, cell wall and vacuole __________ cells (stained cheek cells) Observe cell membrane, cytoplasm and nuclei Eukaryotic cells can be seen with a compound light microscope (examples pictured here) Protist: (Parmamecium caudatum and Euglena

Types of cells:

Prokayotic cells can only be seen with __________ microscopes E. coli as seen under a transmission and scanning electron electron microscope microscope

Cells make up organisms An organism = a _________ thing A unicellular organism is made up of __________ cell Examples: Prokaryotes = Bacteria Eukaryote = Protist e.g. amoeba

Cells make up organisms A multicellular organism is made up of ______ cells E.g. _________ and ___________ NOTE multicellular organism do not have larger cells, just more cells Hydra is a genus of small, simple, fresh-water animals.

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