Cell Biology 3 min read
Cell Wall
Cell membranes surround every cell you will study. Cell walls made of cellulose are only found around plant cells and a few other organisms. Cellulose is…
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Cell Biology 3 min read
Permeases and Channels
Sisterhood of the Traveling Proteins Part II Experiment from last lecture reviewed. · It is possible to make a Heterokaryon cell with mouse…
Cell Biology 2 min read
Active Transport
Active transport describes what happens when a cell uses energy to transport something. We’re not talking about phagocytosis (cell eating) or pinocytosis (cell drinking) in this section.…
Cell Biology 2 min read
Passive Transport
While active transport requires energy and work, passive transport does not. There are several different types of this easy movement of molecules. It could…
Cell Biology 4 min read
Desmosomes
Desmosomes Definition Desmosomes are a type of anchoring junction in animal tissues that connect adjacent cells. Anchoring junctions are button-like…
Cell Biology 2 min read
Centrioles – Organizing Chromosomes
Every animal-like cell has two small organelles called centrioles. They are there to help the cell when it comes time to…
Cell Biology 9 min read
Control of the Cell Cycle
The length of the cell cycle is highly variable, even within the cells of a single organism. In humans, the…
Cell Biology 3 min read
Meiosis
What are the big ideas here? There are two cell divisions. Mitosis has one division and meiosis has two divisions. You still have…
Cell Biology 3 min read
Mitosis
Eventually cells need to duplicate. There are two main methods of replication, mitosis and meiosis. This tutorial will talk about mitosis. The…
Cell Biology 6 min read
The cell cycle
Actively dividing eukaryote cells pass through a series of stages known collectively as the cell cycle: two gap phases (G1 and…
Cell Biology 2 min read
Microfilaments
You will find microfilaments in most cells. They are the partner of microtubules. They are long, thin, and stringy proteins (mainly actin) compared to…
Cell Biology 2 min read
Microtubules
Microtubules are usually discussed with microfilaments. Although they are both proteins that help define cell structure and movement, they are very different…