calcium pump. the mechanism of active transport of calcium (Ca 2+) across a membrane, as of the sarcoplasmic reticulum of muscle cells, against a concentration gradient; the mechanism is driven by hydrolysis of ATP.
A rental agreement differs from a lease agreement in that it is not a long-term contract and usually occurs on a month-to-month basis. This month-to-month lease agreement expires and then renews each month upon agreement of the parties involved.
A legal document outlining the terms under which one party agrees to rent property from another party. A lease guarantees the lessee (the renter) use of an asset and guarantees the lessor (the property owner) regular payments from the lessee for a specified number of months or years. lease is an agreement between two parties where the lessor owns property that it allows the lessee to use pursuant to terms of the agreement.