The kidney dialysis machine is an example of a mechanical
A. active transport system.
B. countercurrent system.
C. cotransport system.
D. sorting system.
E. toy.
Answer: B. countercurrent system.
A. active transport system.
B. countercurrent system.
C. cotransport system.
D. sorting system.
E. toy.
Answer: B. countercurrent system.