4.0 Unit 4 Overview: Cell Communication and Cell Cycle

In a Nutshell

• Your body is made up of TRILLIONS of cells that all have different responsibilities. That is a LOT of cells!!

• In order for your body to function correctly, these cells need to work in unison by communicating with each other. 

• Your cells also go through a process called the cell cycle in order to generate new cells.

Before we begin…

A good way to remember the importance of regulation in cell communication and the cell cycle is to think of a checklist. In order for these processes to be done correctly, there must be correct timing and coordination within the cell. 

Image courtesy of Pixabay.

❗ Important Vocabulary 

• Direct Contact 

• Plasmodesmata

• Gap Junctions 

• Paracrine Signaling 

• Synaptic Signaling

• Synapse 

• Cell Surface Receptors 

• Hydrophobic 

• Hydrophilic 

• Ligand 

• Ion channel Receptors 

• G-protein-coupled receptors 

• Transduction 

• Signal Transduction pathway 

• Cascade Effect 

• Homeostasis 

• Negative Feedback Loops 

• Positive Feedback Loops

• Phases Of The Cell Cycle

• Interphase (G1, S, and G2)

• Centrosome 

• Centrioles 

• Prophase 

• Metaphase 

• Anaphase

• Sister chromosomes

• Telophase 

• Mitosis 

• Meiosis 

• Cytokinesis

• Cell Plate 

• Cleavage Furrow

• Cancerous cells

• Metastasize

• Apoptosis

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