CK-12 Foundation
Ck 12: Common Parts of the Cell 1
[Free Registration/Login may be required to access all resource tools.] Online activity summarizes the cell theory, describes four parts all cells have in common, and the importance of the work of Robert Hooke and Anton van Leeuwenhoek.
Biology 4 kids
Biology4 Kids: Cytoplasm Filling Fluid
A short description of the important fluid inside all cells called cytoplasm.
CK-12 Foundation
Ck 12: Biology: Cytoplasm and Cytoskeletons
[Free Registration/Login may be required to access all resource tools.] Discusses the roles of the cytoplasm and cytoskeleton.
CK-12 Foundation
Ck 12: Biology: Other Cell Organelles
[Free Registration/Login may be required to access all resource tools.] Covers the structure and role of the endoplasmic reticulum, Golgi apparatus, vesicle, vacuole, and centriole.
CK-12 Foundation
Ck 12: Biology: Other Cell Organelles
[Free Registration/Login may be required to access all resource tools.] Covers the structure and role of the endoplasmic reticulum, Golgi apparatus, vesicle, vacuole, and centriole.
Vision Learning
Visionlearning: Structure of Animal Cells
Interactive illustration displays the organelles of an animal cell and their functions.
BiologyWise
Biology Wise: Structure and Function of Cytoplasm
Describes the cytosol, organelles, and cytoplasmic inclusions found in the cytoplasm of a cell, and the functions of the cytoplasm itself.
CK-12 Foundation
Ck 12: Life Science: Cell Membrane
[Free Registration/Login may be required to access all resource tools.] All cells have a barrier around them that separates them from the environment and from other cells. This barrier is called the plasma membrane, or cell membrane....
CK-12 Foundation
Ck 12: Life Science: 2.5 Cell Membrane
Discover the purpose of the cell membrane to the cell's function.
Wikimedia
Wikipedia: Endocytosis
This encyclopedia article from Wikipedia over endocytosis discusses the three forms in which it can take place. Links are provided for additional information on this subject as well as related subjects.
BiologyWise
Biology Wise: Cytoplasm: The Functions of the Building Blocks of Life
Describes what cytoplasm is and its functions in regulating cellular processes.
Wikimedia
Wikipedia: Cytoplasm
Wikipedia offers brief but accurate information on cytoplasm, the matter contained within the plasma membrane of a cell.