0
What else can I help you with?
What has a thin double layered sheet around the cell?
A cell membrane is a thin, double-layered sheet that surrounds a cell. It acts as a boundary to protect the cell and regulate the passage of substances in and out.
What is the double layered sheet that makes up nearly all cell membranes?
The cell membrane is a complicated structure layered rather like a sandwich. The two pieces of bread are the lipid bilayers (bilayers as in the two pieces), the meats and cheeses is the hydrophobic region, and proteins are like the toothpick that is sticking out of the sandwich (there are multiple) and there are various carbohydrate chains coming off of the proteins, like the plastic wrapper on the top of the toothpick.
What is the double layered sheet that makes up nearly all cell membranes called?
The double layered sheet that makes up nearly all cell membranes is called a lipid bilayer. This structure is composed of phospholipid molecules, with hydrophilic heads facing outward and hydrophobic tails facing inward to form a barrier around the cell.
What is the main structural compound of the cell membrane?
Membranes differ in type but they are all fundamentally made up of phospholipids and work on the principle of self assembly through hydrophobic and hydrophilic interactions with water. A phospholipid is a molecule that has a charged (or polar) head group that includes phosphate ions (hence the phospho.. bit). These head groups are polar in the same way that water molecules are polar, hence the head groups are attracted to water (hydrophilic). The tail of a phospholipid is made up of one or two long hydrocarbon chains which are not polar, and hence repel water and attract to themselves (hydrophobic). So a phospholipid is ambiphilic, ie. simulatenously hydrophobic and hydrophilic. If I were to draw it @ = headgroup I = hydrocarbon chain @ II If you put a large concentration of these molecules in water, the tails will clump together and the polar head groups will point outwards facing the water. A membrane is therefore a double layered sheet of phosholipids that self assemble into double layered membranes: (water) @@@@@@@@@@@@@@@@@@@@ IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII @@@@@@@@@@@@@@@@@@@@ (water) these membranes can then have membrane proteins spanning the membrane to act as gateways in and out of the cell. For example KCSA is a potassium ion channel used during nerve signalling.
Is it possible for sheet lighting to strike a person?
Not likely... Sheet lightning is 'cloud-to-cloud' discharges. The fact that the 'flash' is hidden within the cloud makes the whole cloud appear to light up.
Thin double layered sheet around the cell?
cell membrane
What has a thin double layered sheet around the cell?
A cell membrane is a thin, double-layered sheet that surrounds a cell. It acts as a boundary to protect the cell and regulate the passage of substances in and out.
The core of nearly all cell membranes is a double-layered sheet called?
phospholipid bilayer
The core of nearly all cell membranes is a double-layered sheet called what?
phospholipid bilayerrrrr
What is the double layered sheet that makes up nearly all cell membranes?
The cell membrane is a complicated structure layered rather like a sandwich. The two pieces of bread are the lipid bilayers (bilayers as in the two pieces), the meats and cheeses is the hydrophobic region, and proteins are like the toothpick that is sticking out of the sandwich (there are multiple) and there are various carbohydrate chains coming off of the proteins, like the plastic wrapper on the top of the toothpick.
What is the double layered sheet that makes up nearly all cell membranes called?
The double layered sheet that makes up nearly all cell membranes is called a lipid bilayer. This structure is composed of phospholipid molecules, with hydrophilic heads facing outward and hydrophobic tails facing inward to form a barrier around the cell.
What type of cells have membrane?
The cell's membrane is "selectively permeable" because the cell allows some materials to enter or leave.I'm in grade eight. This is what my Science textbook says:"Because the cell membrane allows certain substances to enter or leave, but not others, it is said to be selectively permeable."
What (who)are stromatolites?
The stromatolites are the layered mounds, columns, and the sheet-like sedimentary rocks.
What are stromatolities?
The stromatolites are the layered mounds, columns, and the sheet-like sedimentary rocks.
Double sheet measurement?
double the measurement of a single sheet.
What are the dimensions of a double sheet?
The dimensions of a double bed sheet vary, according to the type of sheet. A fitted sheet measures 54 in by 76 in and a flat sheet measures 87 in by 102 in.
What are the dimensions of a double bed sheet?
The dimensions of a double bed sheet vary, according to the type of sheet. A fitted sheet measures 54 in by 76 in and a flat sheet measures 87 in by 102 in.
