Multiple Choice
All life forms currently have a basic cell membrane so we hypothesize that the earliest cells also had membranes.It is likely that the primordial environment was acidic.In order for a cell to function in this type of environment,the cell membrane would have to include
A) a sodium (Na+) pump.
B) a proton (H+) pump.
C) mitochondria underneath in order to provide energy for active transport.
D) an acid-proof cell wall.
E) a totally nonpermeable membrane.
Correct Answer:
Verified
Correct Answer:
Verified
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