Section I Flashcards
As a cell grow the ___ increases more rapidly than surface area
Volume
The cell theory states….
___ living things are composed of one or more ___
___ are the basic unit of structure and function
Cells only come from existing ___
All; cells
Cells
Cells
Who was the 1st scientist to see living cells
Van Leeuwenhook
Who was the first scientist to discover the nucleus
Robert brown
The lipid bilateral is made up of ___ ___
Membrane proteins
The cell membrane was thought to be a ___ structure
Static
Who concluded that the entire plant is composed of cells
Mattias Schleiden
What is the size of a cell determined by
The ratio of its volume to it’s outer surface area
3 main parts of a typical eukaryotic cell
Cell membrane
Cytoplasm
Cytoskeleton
Liquid portion of a cell
Cytoplasm
All cells contain ___ but not all cells contain a ___
DNA; nucleus
What are the two basic cell types
Prokaryotic and Eukaryotic
What is the shape of most cells
Cubical or spherical
Prokaryotic cell
No ___ bound organelles
No ___
Membrane
Nucleus
Plants tend to be more ___ in shape
Rectangular
The cell theory was developed by what three scientists
Mattias Schleiden
Theodor Schwann
Rudolph Virchow
Provides the internal framework for animal cells
Cytoskeleton
Newer microscopes revealed a newer ___ model
Fluid
Who concluded cells only came from other cells
Rudolph Virchow
The outer boundary of a cell
Cell membrane
What does semi-permeable mean
Cell membrane is able to control what goes in and out of the cell
Proteins move ___ within a lipid bilayer
Laterally
What is the cell membrane also called
Plasma membrane
What does the cell membrane do
Surrounds the cell and gives it support and shape
Who concluded animals are made of cells
Theodor Schwann
“little organs” based on the function of the cell
Organelles
The cell membrane is ___-___
Semi-permeable
