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WINSTONCH [101]
3 years ago
13

When the required direction of transport is opposed to concentration levels, a cell (1)_______ expend energy to force (2)_____ a

cross its membrane.
Biology
1 answer:
VLD [36.1K]3 years ago
4 0
2)Active transport
1)I don't know if it's Active or passive but i am pretty sure it's active
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