In Most Cells, There Are Electrochemical Gradients of Many Ions

question 65

Multiple Choice

In most cells, there are electrochemical gradients of many ions across the plasma membrane even though there are usually only one or two electrogenic pumps present in the membrane. The gradients of the other ions are most likely accounted for by

• A)cotransport proteins.
• B)ion channels.
• C)carrier proteins.
• D)B and C only
• E)A, B, and C

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Definitions:

Rent Payment

The act of paying a specified sum, usually periodically, by a tenant to a landlord in return for the right to occupy or use the property of the landlord.

Tenancy for Years

A lease agreement for real estate that lasts for a specific, fixed duration, longer than one year.

Periodic Tenancy

A leasing agreement that continues for successive periods (such as month-to-month or year-to-year) until either the tenant or landlord gives notice to terminate.

Tenancy at Will

A rental agreement that either party can terminate at any time without cause, provided proper notice is given.