Today in Biology class, Mr. Paek was late for class and he brought Jimmy Johns, but did not share his sandwich with the rest of the class. Mr. Paek also told us how his son is starting to like garbage trucks.
We first started to talk about cell theory. Cell theory is all living things that are composed of cells. Cells are the basic unit of structure and function in living things. New cells are produced from existing cells.
Prokaryotes- cells that does not have a nucleus, and they are older cells.
Eukaryotes- a cell that contains a nucleus. They are a newer type of cell.
Organelle- a specialized part of the cell. Example: Cell membrane, Nucleus, Endoplasmic reticulum, Ribosomes, Cell wall, Golgi apparatus, etc.
We first started to talk about cell theory. Cell theory is all living things that are composed of cells. Cells are the basic unit of structure and function in living things. New cells are produced from existing cells.
Prokaryotes- cells that does not have a nucleus, and they are older cells.
Eukaryotes- a cell that contains a nucleus. They are a newer type of cell.
Organelle- a specialized part of the cell. Example: Cell membrane, Nucleus, Endoplasmic reticulum, Ribosomes, Cell wall, Golgi apparatus, etc.
LAB
Today our class started The Cell Structure and Function lab. The objective of the lab was to observe an elodea leaf, human cheek cell, onion cell, and frog blood. During the lab we prepared a wet mount slide for the elodea leaf, cheek cell, and onion cell. Next we put the slides under a microscope and viewed the various organisms on 400X. (The highest magnification) Then we recorded our observations and tried are best to draw the organism. We did this until the end of class.
HOMEWORK:
Section 7.2 that is due Monday
Notice: There will be a pop quiz on how to focus a microscope on the highest power in under 45 seconds sometime soon. So make sure everyone knows how to focus a microscope.
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