Provide definitions/explanations for the following terms:
$(1)$ Uniport
$(2)$ Symport
$(1)$ Uniport
$(2)$ Symport
(N/A) $(1)$ Uniport: When a molecule moves across a membrane independently of other molecules,the process is called uniport.
$(2)$ Symport: In symport,two different molecules cross the membrane simultaneously in the same direction.
$(2)$ Symport: In symport,two different molecules cross the membrane simultaneously in the same direction.
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