Cells are the basic unit of all living things…if it is alive it has cells.
-
Upload
donald-harris -
Category
Documents
-
view
212 -
download
0
Transcript of Cells are the basic unit of all living things…if it is alive it has cells.
Cells are the basic unit of all living things…if it is alive it has cells
ProkaryotesNo NucleusNo membrane-covered organellesCircular DNABacteria
EukaryotesNucleusMembrane-covered organellesLinear DNAAll other Cells
cytoplasm: inner liquid filling capsule: slimy outer coating cell wall: tougher middle layer cell membrane: delicate inner skin DNA in one big loop ribosomes: for building
proteins
Cell DifferentaitionThere are only 2 classes of cells
(plant/animal), but there are many kinds of cells in each class. Each kind of cell has a DIFFERENT job to do…it specializes.
The cell membrane holds the cell together and allows nutrients in the cell
It’s just like a turtle’s skin The cell membrane is on the edge of a
cell
Cytoplasm is the watery gel inside a cell. It holds the organelles
Cytoplasm is like the turtles blood and other liquids
Mitochondria is an ORGANelle that releases energy from food
Mitochondria is like a turtle’s stomach
The nucleus controls the cell The nucleus is like the turtle’s brain Contains the DNA in Eukaryotic Cells
Chromosomes are inside the nucleus and are made of genes (DNA)
Genes decide the cells traits and activities (heart cell, eye cell (color))
Processes and transports materials out of the cell
Where amino acids are hooked together to make proteins
Makes lipids Breaks down drugs and other substances Packages up proteins for release from the cell Ribosome are attached to it
Digests food particles, wastes, cell parts, and foreign invaders
Vacuoles are spaces in the cytoplasm (gel) where food and chemicals are stored
It’s like “fat” on a turtle
Cell Walls are only in plant cells They make the cell strong and rigid They are like a turtle’s shell (but only plants
have them…that’s why grass stands straight up!)
Chloroplasts are only in plant cells They contain chlorophyll, which helps
make energy/food from sunlight Chlorophyll is green in color…so any
plant that is green has chloroplasts