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The cell membrane, or plasma membrane, is primarily composed of a phospholipid bilayer with embedded proteins, which provides fluidity and flexibility. It is selectively permeable, allowing certain substances to pass while blocking others, thus maintaining the internal environment of the cell. Additionally, the membrane contains carbohydrates that play roles in cell recognition and signaling. Its asymmetrical structure is crucial for various cellular functions, including communication and transport.
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What Controls what moves in and out of the cell?
Cell membrane
What controls the entering and leaving of a cell?
cell (plasma) membrane
Which contains the other cell membrane or phospholipid?
the cell membrane
Passages that permit a cell membrane to be permeable as needed are called?
Passages that permit a cell membrane to be permeable as needed are called ion channels. These channels allow ions such as sodium, potassium, and calcium to flow in and out of the cell, regulating the cell's electrical and chemical properties.
What are the physical properties of a plant cell?
Plant cells have a rigid cell wall made of cellulose, a large central vacuole for storage of water and nutrients, chloroplasts for photosynthesis, and a regular shape with a distinct cell wall and membrane.
What is membrane capacitance and how does it contribute to the electrical properties of a cell?
Membrane capacitance refers to the ability of a cell membrane to store electrical charge. It plays a crucial role in the electrical properties of a cell by allowing the membrane to hold and release electrical energy, which is essential for processes like cell signaling and nerve impulses.
Which type of molecule explains the properties of the cell membrane?
phospholipid
What structure allows only certain things to pass in and out of a cell?
The cell membrane. It is a semi-permeable membrane (or selectively permeable membrane) - this means that it only lets certain certain molecules or ions pass in or out of the cell. Permeability may depend on the molecule's size, solubility, properties, or chemistry.
How does a glass filled with oil and water illustrate the properties of the cell membrane?
the oil will float on the the water which wold illustrate the cell membrane because only certain materials can pass through it
How is a cell membrane's like a window screen?
A cell membrane is like a window screen because of it's translucent properties. The cell allows oxygen and other necessities needed for survival to enter, but resists other invaders.
How is cell membrane is like a window screen?
A cell membrane is like a window screen because of it's translucent properties. The cell allows oxygen and other necessities needed for survival to enter, but resists other invaders.
Why do we refer to the cell membrane as semi-permeable?
The cell membrane is called semi-permeable because it allows certain substances to pass through while blocking others based on their size and properties.
What Controls what moves in and out of the cell?
Cell membrane
Another name for plasma membrane?
A cell membrane is also known as a plasma membrane or cytoplasmic membrane. The cell membrane separates the interior of a cell from its outside environment. The main function of a cell membrane is to protect the cell from its surroundings.
What is the thin flexible membrane around all cells?
the cell membrane is as flexible barrier outside of the cell.
What controls the entering and leaving of a cell?
cell (plasma) membrane
Which contains the other cell membrane or phospholipid?
the cell membrane
