All cells contain cell membrane. which of the following describes the composition of cell membranes? A.) composed of phospholipid molecules, which provide a flexible structure.
B.)composed of cellulose, which provide rigidity for the cell wall
C.) composed of carbohydrate chain, which allow all materials to enter and leave the cell
D.) composed the cytoplasm, which allows proteins to be excreted by the cell.

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The lake of the ozarks is a human-made lake, so it collects runoff from coal strip-mining, fertilizers, resort wastewaters, and septic drainages. the average lake temperature is between 10∘c and 21∘c. consider the physical requirements for growth and multiplication that would allow fecal coliforms to “blossom” in the lake of the ozarks. which of the following would accurately describe these organisms? check all that apply. psychrophiles facultative halophiles extremophiles mesophiles hyperthermophiles