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What are the two main groups in a plasma membrane of organic molecules?
Wiki User
∙ 11y ago
Proteins and lipids
Wiki User
∙ 11y ago
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Osmosis can only if water travels through what?
Water molecules travel through the plasma membrane, tonoplast membrane. In biological systems, the solvent is typically water.
Chemically hormones belong chiefly to two molecular groups called?
Chemically hormones belong chiefly to two molecular groups. The two groups are the steroids and the amino acid based molecules.
The hydrophobic phospholipid tails in the plasma membrane bilayer point toward?
The hydrophobic phospholipid (HPhoPL) tails in the plasma membrane bilayer points toward the other mirrored HPhoPL tailfrom the other side of bilayer. The polar sides point to the outside: the 'water'side of the cel content.
Do plasma molecules have a strong attraction to each other?
electrons :)
2 examples of partially permeable membranes?
A selectively permeable membrane is most often attributed to the cell membrane (plasma membrane) of cells. It is constructed of nonpolar phospholipids that will not dissolve many substances, like ions or large molecules. There are carrier proteins embedded in the membrane that allow only certain substances through.
Give the Chemical nature of plasma membrane and cell wall?
plasma membrane is made of organic molecules called lipds and proteins
What part of the cell membrane attracts water molecules?
the side with the oxygens (the polar side)
Which structure regulates passage of molecules into and out of cells?
The cell membrane is a membrane separating the inside of the cell from the outside environment. This structure is also known as the plasma membrane or the cytoplasmic membrane.
What are most of the molecules that compose the plasma membrane?
phospholipids
What Molecules in the plasma membrane function as transporters?
Proteins
Selective permeability refers to the fact that the plasma membrane keeps all molecules out of the cell?
Selective permeability refers to the fact that the plasma membrane can choose which molecules to let in or out of the cell.
What are the molecules in the plasma membrane made of?
phospholipids are the molecules that make up the plasma membrane and they are made of polar (hydrophilic) heads and 2 non-polar (hydrophobic) tails
The plasma membrane is a semipermeable membrane. This means that it is?
it is permeable to some molecules and not permeable to others.
What type of molecules embebbed in the plasma membrane allows molecules to pass through the membrane by active or passive transport?
proteins
How do glucose molecules cross a plasma membrane?
Facilitated Diffusion
What is the job of the plasma membrane?
it regulates the entry and exitof the molecules
What 5 molecules form plasma membrane?
4+1
