People live in towns.
People are multicellular organisms consisting of trillions of cells.
Each cell has a cell membrane.
Every plant cell and every animal cell has a cell membrane. Your body contains many thousands of real life examples of cell membranes.
The plasma membrane is selectively permeable, and it sounds like your teacher wants you to list things that are selectively permeable. I would say a window screen
A bag or your skin
Maybe but the real answer is the time in your life
The front door to your house because it determines what comes in and out of the house.
As a general rule, practically all the internal organelles of a cell are covered by a protective membrane, except for one type, which couldn't even be called a real organelle, and those are the Ribosomes. More a macromolecular assemble than a cell organelle, the reason because they aren't membrane-bound is because they can directly interact with the membrane in order to exchange proteins, so, having their own membrane would actually act as a barrier for them to do their job correctly.
The model cell is not liquid, and it may not have all the parts.
This is kinda hard
Maybe but the real answer is the time in your life
The cytoplasm is all of the material within a eukaryotic cell, enclosed by the cell membrane, except for the cell nucleus. The cytoplasm is about 80% water and is usually colorless.
example: secretion of proteins like enzymes, peptide hormones and antibodies from cells. the cell membrane folds inward, trapping a small amount of matter from the extracellular fluid. :)
cell membrane!!! not ribosomes! -wrong plant cells have cell walls and animal cells have cell membrane, it might seem right but it is wrong. Nearly all cells have a mitochondrion.^ While the answer above is correct, the real answer is Cell Membrane. So all cells have cytoplasm, AND cell membranes.
Osmosis certainly does happen regularly in real life. Osmosis is the transportation of water from one side of a membrane to the other side of a membrane.
its like for having a coat on in the winter.....it keeps the cold air out and the warm air in... like a cell wall:)
The ozone or an eggshell
The front door to your house because it determines what comes in and out of the house.
the answer is insulin
A shoe box is one, because it protects the shoes from any damage of the outside world.
People often call it the powerhouse of the cell because it generates ATP, the cells energy currency.It also helps the cell breathe
exoxytosis - may not be a real word. it could not be found on Dictionary.com so it was found on wiki.Exocytosis (ek-soh-sy-TOH-sis; from Greek ἔξω "out" and English cyto- "cell" from Gk. κύτος "receptacle") is the durable process by which a cell directs the contents of secretory vesicles out of the cell membrane. These membrane-bound vesicles contain soluble proteins to be secreted to the extracellular environment, as well as membrane proteins and lipids that are sent to become components of the cell membrane.