Which of the Following Best Describes Secondary Active Transport

The concentration gradient produced by primary active transport drives the transport of other materials For example the sodium-potassium ATPase pump creates a high concentration of sodium in the extracellular fluid. Secondary active transport involves the movement of a substance into.

Solved Questions 1 Points Save An Which Of The Following Chegg Com

Secondary Active Transport.

. In antiport driving ions and transport molecules move in the opposite direction. Which of the following best describes the driving force behind secondary active transport. Secondary active transport.

This gradient allows for cotransportsecondary transport of sucrose against its concentration gradient as protons come down their concentration gradient via their membrane. Secondary active transport is a kind of active transport that uses electrochemical energy. Which of the following best describes the changes in cell volume that will occur when red blood cells previously equilibrated in a 280-milliosmolar solution of NaCl are placed in a solution of 140 millimolar NaCl containing 20 millimolar urea a relatively large but permeant molecule.

In the secondary active transport proteins present in the cell membrane use the electromagnetic gradient to move across the membrane. This process can be either symport in which the substances are both moving either in or out through the membrane or antiport in which one is entering while the other is exiting. C Cotransport and exchange are variations of secondary active transport.

Secondary active transport occurs by two mechanisms called antiport exchange diffusion and symport cotransport. Which one of the following is NOT consistent with secondary active transport. In the primary active transport for transporting the molecules it uses chemical energy to push the molecule.

Secondary active transport uses ATP directly while facilitated uses ATP indirectly. The proton pump creates an electrochemical gradient of protons hydrogen ions H using ATP to drive primary active transport. Up to 10 cash back Correct answer.

Secondary active transport is a form of active transport across a biological membrane in which a transporter protein couples the movement of an ion typically Na or H down its electrochemical gradient to the uphill movement of another molecule or ion against a concentrationelectrochemical gradient. Symports and antiports are the two types of transmembrane proteins in secondary active transport. The electrochemical gradients set up by primary active transport store energy which can be released as the ions move back down their gradients.

A The movement of an ion down its concentration gradient is coupled to the movement of another molecule against its concentration gradient. Secondary active transport occurs when one substance is coupled with the passive transport of a second substance. Primary active transport is used to transport sugars and amino acids across the plasma membrane while secondary active transport includes the sodium-potassium pump.

An example of this system also called antiport begins with the sugar transporter described above. Secondary Active Transport. Using the energy of the electrochemical gradient created by the primary active transport system other substances such as amino acids and glucose can be brought into the cell through membrane channels.

Secondary active transport relies on the energy of the sodium gradient while facilitated diffusion uses. Primary active transport is driven by secondary active transport. It takes place across a biological membrane where a transporter protein couples the movement of an electrochemical ion typically Na or H down its electrochemical gradient to the upward movement of another molecule or an ion against a concentration or.

Uses the kinetic energy from one substances movement to energize an ion pump in the other direction across the plasma membranes electrochemical gradient. You got most of it right - primary active transport requires energy usually through ATP hydrolysis and pumps molecules against their concentration gradient. There are two kinds of secondary active transport.

B In secondary active transport ATP is hydrolyzed. Transmembrane proteins are unique to the ion transported through them. Figure 517 Proton Gradient provides energy for a secondary active transporter.

We usually talk about ion pumps but there are pumps that transport. In contrast to primary and secondary active transport. Secondary active transport uses the energy stored in these gradients.

Secondary active transport requires an input of energy while facilitated diffusion does not. Facilitated diffusion requires an input of energy while secondary active transport does not. In most animal cells the driving force for secondary active transport is the concentration gradient of Na K.

Plasma membranes of the cell are permeable to molecules that pass through the phospholipid bilayer easily namely small nonpolar molecules. Due to this specificity in permeability membrane proteins are often required to transport molecules across the bilayer. Which of the following is a difference between primary and secondary active transport.

B The transport mechanism requires energy. Which of the following is NOT true for all three transport mechanisms. Counter-transport in which the two substrates cross the membrane in opposite directions and cotransport in which they cross in the same direction.

39 _____ A The transport mechanism has a limit to the total number of molecules that can be transported per unit of time. Secondary active transport describes the movement of material using the energy of the electrochemical gradient established by primary active transport. Facilitated diffusion primary active transport and secondary active transport.

Ions serve as driving molecules while ions or other molecules serve as driven molecules. Answer 1 of 2. Secondary active transport involves the movement of water by osmosis into a cell Secondary active transport involves the movement of a substance into a cell with its concentration gradient.

Do7d69res Jt2m