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Cell or Plasma Membranes
Every cell has a cell membrane (plasma membrane) that separates the interior of the cell from the outside environment. One of the most important functions of this biological membrane is to protect the cell from outside threats by controlling the movement of substances in and out of the cell.
1,116 Questions
What advantages might there be for an organism to be subdivided into cellular compartments?
Multicellular allows larger organisms to organize different processes in separate, specialized compartments.
What is the diffusion of water across a semipermeable memberane?
Diffusion of water across a semipermeable membrane is a type of simple diffusion given the special name of osmosis.
selective permeability
Do phenols disrupt cell membranes?
Yes, phenols can disrupt cell membranes by interacting with the lipid bilayer and causing structural damage. They can also interfere with membrane proteins and alter their function, leading to cell membrane permeability changes and potential cell damage or death.
What are two substances that would need to move into a cell to maintain homeostasis?
Oxygen and Nutrients.
Cell membranes help organisms maintain homeostasis by controlling what substances may enter or leave cell. In homeostasis, the waste is being transported away from the cell while it receives the nutrients it needs to continue to function.
What would act as a Golgi apparatus in a restaurant?
Having your meal packed up as a 'doggy bag' to take home would be analogous to the Golgi apparatus.
What happens if the particle is too large to get across the membrane?
The cell use something called a protein channel that helps larger particles across the cell membrane.
Transportation. Being flat and thin makes it like a sail when it's trying to move around. A small, compact cell can move around easier, expending less energy.
How is the cell membrane involved in regulating osmosis?
It is semi-permeable to water, in which water can pass it through the double lipid layer or through proteins crossing the double layer of the cell membrane.
What are the roles of proteins carbohydrates and cholesterol in the plasma membane?
Apple pie to the square root of the seribrim theory is equal to the roles of protains carbohydrates and cholesterol in the plasma membrane
What is a list of things that might go wrong in the cell without the cell membrane's help?
Without the cell membrane, things that might go wrong in the cell include loss of structure and integrity, inability to control what enters and leaves the cell, vulnerability to harmful substances, and difficulty maintaining proper cell functions.
Which pump is responsible for muscle contraction through depolarization of muscle cell membrane?
Ca2+
Does a leaf cell contain cell membrane?
No, a leaf is part of a plant. Therefore the leaf is made up of "plant" cells. So it has a cell wall.
What organelles help float around the cell keeps pressure on the cell membrane and wall?
Your Penis or (DICK) OR (COCK)
