Table of Contents
What must occur for a message to be sent from the outside of the cell to the inside of the cell?
What must occur for a message to be sent from the outside of the cell to the inside of the cell? A signaling molecule binds with a membrane protein. You just studied 10 terms!
What is the ability of a cell membrane to allow materials to pass through it called?
Plasma membranes must allow certain substances to enter and leave a cell, and prevent some harmful materials from entering and some essential materials from leaving. In other words, plasma membranes are selectively permeable—they allow some substances to pass through, but not others.
Which part of the cell membrane is nonpolar and prevents the cell from dissolving?
The heads, which form the outer and inner linings, are “hydrophilic” (water loving) while the tails that face the interior of the cell membrane are “hydrophobic” (water fearing). Water is attracted to the outsides (red) of the membrane but is prevented from going through the non-polar interior (yellow) layer.
What is meant by this statement the cell membrane is said to be fluid?
It is sometimes referred to as a fluid mosaic because it has many types of molecules which float along the lipids due to the many types of molecules that make up the cell membrane. The liquid part is the lipid bilayer which floats along the lipids due to the many types of molecules that make up the cell.
What part of the cell is semipermeable?
the cell membrane
Structure and function of the cell membrane The cell membrane is semipermeable (or selectively permeable). It is made of a phospholipid bilayer, along with other various lipids, proteins, and carbohydrates.
Which structure is unique to plant cells?
The plant cell has a cell wall, chloroplasts, plastids, and a central vacuole—structures not found in animal cells. Plant cells do not have lysosomes or centrosomes.
What part of cell membrane attracts water?
hydrophilic
The cell membrane is also called the PLASMA membrane and is made of a phospholipid BI-LAYER. The phospholipids have a hydrophilic (water attracting) HEADS and two hydrophobic (water repelling) TAILS.
Which is an example of how the cell membrane of a tube worm?
Some examples of how the cell membrane of a tube worm maintains a stable environments are that: – It prevents minerals in the water from flowing into the cell. – It prevents salt from flowing in.