The route by which substances are reabsorbed by crossing through the cells of the renal tubule and collecting system is known as the:

a. paracellular route.

b. transcellular route.

c. primary active transport route.

d. facultative route.

Video transcript

Hi everybody. Here's your next question. The trans cellular route facilitates the transfer of clues through a cell. How does the paracellular route move sites a the particle or solutes moves from higher to lower concentration? B directly uses chemical energy to transport solutes across a membrane against their concentration gradient C diffusion. And that it moves a substance down its concentration gradient or D transport solus between cells through the intercellular space. So this is an example of why it's always important to read. Um All your answers to a multiple choice question because we have multiple answers that are actually true. When cell, when materials are moved through the paracellular route, they are moving in general by passive diffusion from higher to lower concentration, no energy put in. So that means that choice A is true that they move from high to lower concentration. Choice C is true and that they move down a concentration gradient. But choice D is a better answer. It's more specific because our question wants us to compare the trans cellular route versus the paracellular route. And while trans cellular transports through a cell paracellular transports between or around the cells through the intercellular space. So it's not that A and C are wrong. They are a correct description of how things move. But there the choice D is a better answer because it specifically describes this mode in contrast to the trans cellular route. So we're going to rule out choice A and C and then choice B is definitely wrong uses chemical energy to transport, salutes against their concentration gradient because this form of transport, paracellular is definitely through passive diffusion rather than active transport. So again, when we're talking specifically about how does paracellular, this para the paracellular route move solutes as compared to the trans cellular route. The answer is choice D it transports solutes between cells through the intercellular space. See you in the next video.