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An overview of cell theory and the components of both prokaryotic and eukaryotic cells. Topics include the three principles of cell theory, the structure and function of the plasma membrane, cytoplasm, dna, and energy utilization in cells.
What you will learn
Typology: Summaries
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Chapter 4: Cell Structure and Function
mitosis or meiosis
Have no membrane bound organelles
DNA that is contained within the nucleus
membrane bound organelles.
Energy utilization
Response to changes
Evolutionary change
Growth and development
Mitosis (except germ cells)
Meiosis (germ cells only)
Plasma membrane Even plant cells have plasma membrane
Cytoplasm
The ability to obtain and utilize energy.
Plasma Membrane: Thin barrier separating inside of cell (cytoplasm) from outside environment
Function:
Isolate cell’s contents from outside environment
Regulate exchange of substances between inside and outside of cell
Allows communication and interaction with other cells
All prokaryotic and eukaryotic cells have a plasma membrane Even plant cells (though plants are special)
Phospholipid Bilayer : Double layer of phospholipids
All material and structures that lie inside of the plasma membrane, except for the nucleus. Cytosol
Salts and organic materials
Organelles
The fluid component of cytoplasm.
Some viruses use RNA, but viruses are currently considered non-living by most scientists.
Greater nutrient and waste elimination needs.
This requires a GREATER surface area.