Diffusion is the process by which gases such as oxygen and carbon dioxide cross the plasma membrane.
Further Explanation
Plasma membrane present in all the animals and plant. Plasma membrane in plants is covered by a cell wall. plasma membrane is made up of lipid bilayer which is semipermeable to some molecule ions and gases. Through this lipid bilayer, plasma membrane regulates the influx and efflux of a molecule.
Main functions of plasma membrane is to,
• Maintain the structure of a cell
• Help in interaction with other cells
• Provide protection from outside
• Help in transport nutrient in the cell and transport toxic substances out of the cell.
The lipid bilayer is made up of phospholipids and these are an amphipathic molecule that contains hydrophilic as well as the hydrophobic region. the plasma membrane has 2 bilayers closely packed together and interior of membrane is hydrophobic,altogether these structures make plasma membrane selectively permeable and allow flux of small non-polar material like carbon dioxide, oxygen through simple diffusion.
Diffusion is a movement of a small molecule from higher concentration to a lower concentration. For example, oxygen is used by our cell very easily during metabolism and concentration of oxygen in cell become less and concentration of oxygen is high outside, so oxygen can easily diffuse through bilayer into the cell cytoplasm.
Learn more:
1. Learn more about eukaryotic cell:
https://brainly.com/question/10767798
2. Learn more about cell membrane: https://brainly.com/question/5923583
3. Learn more about phospholipid bilayer https://brainly.com/question/751529
Answer Details:
Grade: High School
Subject: Biology
Chapter: Cell biology
Keywords:
Membrane, cellwall, phospholipid bilayer, cell, oxygen, lipid, diffusion, concentration, lower, high, metabolism, semipermeable, permeability, hydrophobic, hydrophilic, influx, efflux, metabolism.