Biology
- Membrane Systems
Endoplasmic reticulum (ER) consists of a series of membranes creating channels within the cytoplasm, which are continuous with the nuclear membrane. They also form sheets that enclose cellular spaces called cisternae. ER provides a large surface area...
- Q: Discuss The Role Of Membranes In The Synthesis Of Atp During Photosynthesis
The chloroplast is enclosed by two membranes, and this separates reactions within the chloroplast from the rest of the cytoplasm. The double membrane of the chloroplast also serves to maintain high substrate concentrations within the chloroplast for photosynthesis....
- Proteins Reside In Membranes By Means Of Hydrophobic Regions
KEY TERMS:The transmembrane region (transmembrane domain) is the part of a protein that spans the membrane bilayer. It is hydrophobic and in many cases contains approximately 20 amino acids that form an ?-helix. It is also called the transmembrane...
- #24 Cell Membranes - Fluid Mosaic Model Of The Plasma Menbrane
The fluid-mosaic model describes the plasma membrane that surrounds animal cell. The membrane has 2 layers of phospholipids (fats with phosphorous attached), which at body temperature are like vegetable oil (fluid). 1. Fluid Mosaic Model Because...
- #11. Lipids - Triglycerides And Phospholipids.
Lipids: - Include triglycerides + phospholipids. - Molecules contain C, H, O atoms - Very small proportion of O. - Insoluble in water. 1.Triglycerides - Made of glycerol 'backbone', attached to 3 fatty acids by ester bonds. Fatty...
Biology
Hydrophobic: Cells
This is a picture of oil and water. In this picture you could see that when mixed the two substances do not become homogenous. This is because oil is a hydrophobic substance, this means that it is made of large molecules that repel water. Cells have membranes that are made of phospholipids. One part is hydrophilic and one is hydrophobic, not all substances can enter the membrane because the hydrophobic part. Therefore protein channels are used to allow entry.
- Membrane Systems
Endoplasmic reticulum (ER) consists of a series of membranes creating channels within the cytoplasm, which are continuous with the nuclear membrane. They also form sheets that enclose cellular spaces called cisternae. ER provides a large surface area...
- Q: Discuss The Role Of Membranes In The Synthesis Of Atp During Photosynthesis
The chloroplast is enclosed by two membranes, and this separates reactions within the chloroplast from the rest of the cytoplasm. The double membrane of the chloroplast also serves to maintain high substrate concentrations within the chloroplast for photosynthesis....
- Proteins Reside In Membranes By Means Of Hydrophobic Regions
KEY TERMS:The transmembrane region (transmembrane domain) is the part of a protein that spans the membrane bilayer. It is hydrophobic and in many cases contains approximately 20 amino acids that form an ?-helix. It is also called the transmembrane...
- #24 Cell Membranes - Fluid Mosaic Model Of The Plasma Menbrane
The fluid-mosaic model describes the plasma membrane that surrounds animal cell. The membrane has 2 layers of phospholipids (fats with phosphorous attached), which at body temperature are like vegetable oil (fluid). 1. Fluid Mosaic Model Because...
- #11. Lipids - Triglycerides And Phospholipids.
Lipids: - Include triglycerides + phospholipids. - Molecules contain C, H, O atoms - Very small proportion of O. - Insoluble in water. 1.Triglycerides - Made of glycerol 'backbone', attached to 3 fatty acids by ester bonds. Fatty...