The cell theory Flashcards
Organisms are composed of one or more cells
The cell theory
The cell is the basic unit of structure and organization in organisms
The cell theory
All cells come from pre-existing cells
The cell theory
The basic structure of an organism
The cell
Basically, makes up every living entity
The cell
Building blocks of an organism (multicellular)
The cell
Building blocks of an organism (multicellular)
The cell
Two types of cells
- Prokaryotic
- Eukaryotic
3 Domains
- Bacteria
- Archaea
- Eukarya
Single-celled (unicellular)
Types of cells
Prokaryotes
- “Pro” = before
- “Karya” - Nucleus
- Literal meaning “before nucleus”
Types of cells
Prokaryotes
Multicellular or unicellular
Types of cells
Eukaryotes
- Eu = true
- Karya = Nucleus
- Literal meaning “True Nucleus”
Types of cells
Eukaryotes
Encloses cell contents
Parts of the eukaryotic cell
Plasma Membrane
Monitors what comes in and out
(semi-permeable - it cannot allow the entry of
some materials from going inside the cell)
Parts of the eukaryotic cell
Plasma Membrane
Provides protection and support for the whole
cell
Parts of the eukaryotic cell
Plasma Membrane
Made of different kinds of
molecules: phospholipids,proteins, carbohydrates
Structure of _____
Plasma Membrane
Semi-fluid, flexible structure
Structure of _____
Plasma Membrane
It is known as phospholipid
bilayer
Structure of _____
Plasma Membrane
Made up of:
1. Hydrophilic Head
2. Hydrophobic Head
Parts of the Eukaryotic Cell
Phospholipid
- Requires Energy
- Does not require energy
Plasma membrane
Cell Transport
Transport protein is visible
Cell Transport requires Energy
Active transport
large molecules
Cell Transport requires Energy
ex: endocytosis
Bulk transport
water molecules are the only one
passing through
Cell Transport Does not require Energy
Osmosis
can pass through the membranes
clearly, need for a protein channel
Cell Transport Does not require Energy
Simple Diffusion and Facilitated Diffusion
the
substance passes between the
phospholipids
Types of diffusion
Simple Diffusion
specialized
membrane channel
Types of diffusion
Facilitated Diffusion
Contains water and nutrients within the cell
Cytosol
Helps in filtering out waste materials
Cytosol
Participates in energy production (cell
respiration)
Cytosol
Energy is produced
parts of the eukaryotic cells
Cytosol
Microtubule-organizing center
Centrosome
Contains centrioles (animal cell)
Centrosome
Carry materials coming from the nucleus
Endoplasmic reticulum (ER)
Associated with protein synthesis
Endoplasmic reticulum (ER)
System of folded tube-like structures,
functions for:
a. Protein folding
b. Protein transport
c. site/location of ribosomes
Endoplasmic reticulum (ER)
Tubular
Kinds of Endoplasmic Reticulum
Smooth ER
Factory-warehouse of metabolic products
needed for cell to function
Kinds of Endoplasmic Reticulum
Smooth ER