Concept explainers
To fill:
The correct term in the given blank.
Introduction:
A cell is a structural and functional unit of an organism. Every cell is surrounded by a protective covering called plasma membrane. It controls the entry and exit of substances into and out of the cell.
Answer to Problem 12A
The plasma membrane is the component that surrounds all cells.
Explanation of Solution
All types of cells are surrounded by an outer boundary called plasma membrane. It is a thin, flexible boundary between a cell and its outer environment that allows nutrients into the cell and wastes to leave the cell. Both prokaryotes and eukaryotes have plasma membrane. It helps in maintaining homeostasis.
Chapter 7 Solutions
Biology Illinois Edition (Glencoe Science)
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