What is the combination of an electrical gradient and a concentration gradient called?
potential gradient
electrical potential
concentration potential
electrochemical gradient

Option D. "electrochemical gradient"

Explanation:

Electrical gradient is defined as the electrical potential acts on an ion that drives it in one or another direction.

Concentration gradient is defined as the movement of particles (solutes) from higher concentration area to lower concentration area, separated by a membrane.

The combination of electrical gradient and a concentration gradient  is called electrochemical gradient  that allows the movement of an ion across a membrane based on solute concentration.

Hence, the correct option is D.

yes by elenaboo   it could cause lots of stuff

1: the largest region of the brain is the:

  cerebrum

2. the term "psychology" literally means:

the process or procedure of the science or study of the mind.

3. the area of the brain responsible for respiration, heart rate, and smooth muscle control of our blood vessels is t

medulla oblongata

4. the structure that conducts nerve impulses to and from the brain and serves as a reflex center for some sensory information without input from the brain is the:

spinal cord

5. the three-layered membrane that covers the brain and spinal cord and literally means membrane is called the:

meninges

6. the cord-like (string-like) structures that carry bio-electrical impulses from one part of the body to another are called

nerves

7. a group of nerve cell bodies that are found outside of the spinal cord and brain are referred to as:

ganglions or ganglia (pl.) “literal meaning knot”

8. the term that means spinal cord inflammation is:

myel/itis