Regulates what enters and exits the cell, and doens't let any dangerous substances in.
What kind of substances exit and enter?
2006-11-29 18:42:22 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
useful substances enter and waste products exit of course.
useful substances include glucose, oxygen, amino acids, etc.
waste products would be carbon dioxide, urea, etc.
2006-11-29 18:47:18 · answer #1 · answered by pigley 4 · 0⤊ 1⤋
the cell membrane is basically a lipid bilayer with a hydrophilic head and a hydrophobic tail. this is what regulates the flow of substances in and out of the cell. unless of course some sort of active diffusion that takes place to assist certain substances/molecules in and out of the cell.
generally, nutrients and other 'stuff' that the cell needs from the outside environment enters the cell and then waste exits it.
you should probably read up on this if you need to know more. just type cell membrane on the search bar and you'll get tons of info about it!
2006-11-29 19:13:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
a million. Emerson Jack Alford 2. Emmery Rose Alford 3. Amelia Lillian Alford 4. Sophia Lilith Alford 5. Gabriel James Alford 6. Alex Manson Alford 7. Joshua Laurence Alford 8. Vladimir Scott Alford 9.Vivienne Lily Alford 10.Evangeline Kate Alford
2016-10-08 00:02:02 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Gases - carbon dioxide, oxygen; Glucose; Water, Ions - Sodium, Potasium, Chloride, Calcium,etc.
2006-11-29 22:04:13 · answer #4 · answered by Life Style 2 · 0⤊ 0⤋
water molecules, ions etc
2006-11-29 19:50:56 · answer #5 · answered by MissFretNot 3 · 0⤊ 0⤋