Unit 5: Structure of a cell About this unit This unit is part of the Biology archive. Browse videos and articles by topic. For our most up-to-date, mastery-enabled courses, check out High School Biology …

While plant and animal cells share many common features, they also have distinct differences that are crucial for their respective organisms’ survival and functioning.

Cells are the most basic unit of life. All cells have a membrane that separates them from the outside world. Although cells are small, they are not simple. Cells contain different components, such as the …

A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the cell and controls the substances that go into and out of the cell.

There are two main types of cells, prokaryotic and eukaryotic. Prokaryotes are cells that do not have membrane bound nuclei, whereas eukaryotes do. The rest of our discussion will strictly be on …

Explore the structures and functions of major eukaryotic cell organelles. Understand how the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, chloroplasts, and ribosomes …

The cell membrane surrounds a cell’s cytoplasm, which is a jelly-like substance containing the cell’s parts. Cells contain parts called organelles. Each organelle carries out a specific function in the cell. …

So if we have a very basic picture of a cell here with a little nucleus on the inside, this pink outside layer is what we call the cell membrane. The cell membrane can protect our cell from the outside …

The plasma membrane not only defines the borders of the cell, but also allows the cell to interact with its environment in a controlled way. Cells must be able to exclude, take in, and excrete various …

Cells: the basic building blocks of life! Learn about the structure of living cells and how this allows them to carry out critical functions, including homeostasis, growth and reproduction.