BIO 101 - Cell Membrane
Structure and Function study
guide 1 with well &verified
definitions 2025 newest
cytosol - Answer The internal and external environments of cells
are largely fluid and within the cell it is called cytosol.
-The cell (plasma) membrane surrounds the cytosol.
The Fluid-Mosaic Model - Answer describes the structure of the
plasma membrane as a mosaic of components —including
phospholipids, cholesterol, proteins, and carbohydrates—that
gives the membrane a fluid character. Plasma membranes range
from 5 to 10 nm in thickness.
, Cell membranes are made up of a - Answer phospholipid bilayer
phospholipid bilayer - Answer two layers of phospholipids.
-This bilayer has a consistency of olive oil.
Phospholipids - Answer have a nonpolar, hydrophobic end (tail)
and a polar, hydrophilic end (head).
glycolipids - Answer lipids which have a hydrophilic head and are
made up of a variety of sugars.
-They function as receptor sites for the cell, cell markers, and
possibly play a role in growth.
cholesterol - Answer is a major membrane lipid and also has
hydrophilic/hydrophobic ends.
-They are believed to makes the membrane more impermeable to
most biological molecules.
Proteins - Answer are either partially or wholly embedded in the
cell membrane. Composition of proteins varies among cells.
glycoprotein - Answer A special kind of protein found in cell
membranes.
-These are proteins with carbohydrates attached to them.
-They make cell to cell recognition possible and serve as the
"fingerprints" of the cell.
Structure and Function study
guide 1 with well &verified
definitions 2025 newest
cytosol - Answer The internal and external environments of cells
are largely fluid and within the cell it is called cytosol.
-The cell (plasma) membrane surrounds the cytosol.
The Fluid-Mosaic Model - Answer describes the structure of the
plasma membrane as a mosaic of components —including
phospholipids, cholesterol, proteins, and carbohydrates—that
gives the membrane a fluid character. Plasma membranes range
from 5 to 10 nm in thickness.
, Cell membranes are made up of a - Answer phospholipid bilayer
phospholipid bilayer - Answer two layers of phospholipids.
-This bilayer has a consistency of olive oil.
Phospholipids - Answer have a nonpolar, hydrophobic end (tail)
and a polar, hydrophilic end (head).
glycolipids - Answer lipids which have a hydrophilic head and are
made up of a variety of sugars.
-They function as receptor sites for the cell, cell markers, and
possibly play a role in growth.
cholesterol - Answer is a major membrane lipid and also has
hydrophilic/hydrophobic ends.
-They are believed to makes the membrane more impermeable to
most biological molecules.
Proteins - Answer are either partially or wholly embedded in the
cell membrane. Composition of proteins varies among cells.
glycoprotein - Answer A special kind of protein found in cell
membranes.
-These are proteins with carbohydrates attached to them.
-They make cell to cell recognition possible and serve as the
"fingerprints" of the cell.
