53 WJEC Biology AS Level - Marianne Izen - 2nd Edition (1.3 Cell Membranes And Transport) Flashcards
1
Q
What do organelles and structures in a cell require to perform their functions?
A
The organelles and structures in a cell require a variety of materials to perform their functions.
2
Q
What are all cells surrounded by?
A
All cells are surrounded by a cell-surface (plasma) membrane
3
Q
What is the function of the cell-surface membrane?
A
It controls the exchange of materials, such as nutrients, respiratory gases and waste products, between the cell and its environment.
4
Q
The cell-surface membrane ——- which ——- pass ————-.
A
The membrane selects which substances pass into and out of the cell.
5
Q
The cell-surface membrane is a ——- that ——- the —— from its ———-.
A
It is a boundary that separates the living cell from its non-living surroundings.
