HELP PLEASE Which of the following is an example of active transport in a cell?
Choose 1
Oxygen entering the cell without the use of energy
B
Sodium moving out of the cell against its concentration gradient
Calcium passing through channel proteins, from a high to low concentration
Enzymes spreading evenly through cytoplasm

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the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: