How does secondary active transport work?

Answer 1

Active transport requires energy (ATP, GTP, etc) to work against the electrochemical gradient.

Passive transport works with the electrochemical gradient and does not require energy. (Think diffusion)

Answer 2

Secondary active transport uses the energy stored in ion concentration gradients to transport substances across a cell membrane against their concentration gradient. This process is carried out through the coupling of the movement of one substance down its concentration gradient, with the movement of another substance against its concentration gradient. Examples of secondary active transport systems include the sodium-glucose symporter and the sodium-calcium exchanger.

Answer 3

Facilitated diffusion is a form of passive transport, in Facilitated diffusion molecules move across a semi-permeable membrane with the aid of specialized transports proteins and in active transport molecules move across the plasma membrane with the expenditure of ATP.

Answer 4

The difference between primary and secondary transport is whether the transporter directly or indirectly uses energy Primary active transport: ATP is used directly, and the energy comes from the breakage of a high energy phosphate bond. Secondary active transport: ATP is not used directly, and the energy comes from a gradient that was created by a primary active transport system that used ATP.

Answer 5

Primary active transport directly uses ATP by hydrolysis

Secondary transport uses an electrochemical gradient across a membrane initiated by primary active transport.

Primary active transport is the process in which ions are moved across cell membranes against the electrochemical gradient using energy supplied directly be ATP. The action of the sodium-potassium pump is an important example of primary active transport.

Secondary active transport is indirectly driven by primary transport. In the sodium-potassium pump, by pumping against the gradient, energy is stored in the ion gradient. Then, just as water pumped uphill can do the work as it flows back down, (think water wheel or turbine), a substance pumped across the membrane can do work as it leaks back, propelled downhill along the concentration gradient.

Answer 6

1\ In primary active process:

It required energy (ATP) to move the solute up the concentration gradient.

***

2\ In secondary active process:

It required no energy.. But instead, it needs:

• co-transport: that both molecules are on the same side and move together to other side of membrane.
• counter-transport : that both molecules are on the opposite side and move on opposite direction to each other.

Answer 7

primary is found fomr the ground

secondary has been nroinfoisjnfpe;mf

Answer 8

Movement of a substance that utilizes a carrier, and has a concentration gradient as the source of energy.

Answer 9

The primary difference is that in active transport, energy is used.

Answer 10

active