Active transport Flashcards
what is active transport
the movement of particles against a concentration gradient using energy transferred during respiration
(low concentration to high)
What does active transport do
like diffusion and osmosis can be used to move substances in and out of cells, and allows cells to absorb ions from very dilute solutions
what gives plants a large surface area
the cells on the surface of plant roots grow into long “hairs” which stick out into the soil
each branch of a root is covered in what
millions of microscopic hairs
what do plants need mineral ions for
healthy growth
where is the concentration of minerals usually
higher in the root hair cells that in the soil around them
What do the root hair cells use instead of diffusion
active transport
what does active transport allow
plants to absorb minerals from a very dilute solution against a concentration gradient, essential for growth
for active transport what does it need
energy from respiration
an example of active transport happening in humans
taking in glucose from the gut and the kidney tubules
true or false cells cannot absorb ions from very dilute solutions
false
name two molecules that is taken up by active transport in the gut
glucose or sugar
