Cell review notes

Name and describe the three main parts of a cell. plasma membrane-forms a cell’s flexible outer surface, separating the cell’s internal environment (inside the cell) from its external environment (outside the cell) cytoplasm- consists of all the cellular contents between the plasma membrane and the nucleus. nucleus- is the largest organelle of a cell. The nucleus acts as the control center for a cell because it contains the genes, which control cellular structure and most cellular activities
The cell is the basic, living, structural and functional unit of the body.
1. What are the three principal parts of a cell? plasma membrane, cytoplasm, and nucleus
What are the general functions of the three main parts of a cell?
Definition of Plasma membrane, cytoplasm, nucleus
Describe the structure and functions of the plasma membrane.
Plasama membrane is adjecent or near the secondary cell wall in a cell. It is a living outermost boundary of all the cells three layer that is two protein layers on either side and a double middle layer

The plasma membrane consists mostly of phospholipids, arranged in a bilayer, and proteins, most of which are glycoproteins.
2. Name several functions carried out by membrane proteins.
Most functions of the plasma membrane depend on the types of proteins that are present. Integral proteins called receptors recognize and bind a specific molecule that governs some cellular function, for example, a hormone such as insulin. Some integral proteins act as enzymes, speeding up specific chemical reactions. Membrane glycoproteins and glycolipids often are cell identity markers. They enable a cell to recognize other cells of its own kind during tissue formation, or to recognize and respond to potentially dangerous foreign cells.
Some integral proteins function as channels or carriers to move substances across membranes. Other integral proteins function as receptors. Membrane glycolipids and glycoproteins are involved in cellular