Question

Nervous tissue uses calcium to signal release of neurotransmitters to communicate to other cells.
There's 16 M Ca++ outside cells. There's 5 M Ca++ inside.

Which direction will Calcium move through passive transport?



Which direction will Calcium move using ATP?



Name the type of membrane transport to move Ca++ outside the cell.



Name the type of membrane transport to move Ca++ into the cell.

Answer 1

OUTSIDE OF THE CELL HAS 16M CALCIUM ION AND INNER SIDE OF THE CELL HAS 5M SO OUTER SIDE CALCIUM CONCENTRATION IS HIGH AND THE INNER SIDE OF THE CELL HAS LOW CONCENTRATION

1) In passive transport, movement is always towards to the concentration gradient means high to a low concentration so calcium ion will move from outside of the cell to the inside of the cell.

2) In active transport, ATP is used. Here movement is always against the concentration gradient means low to high. So, in this case, calcium ion will come out from the cell.

By seeing the upper questions answer we can give the 3rd and 4th question answer-

3) Active transport.

4) Passive transport.