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Biology
Cell Biology:
active transport
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Active transport
Moves substances from a more
dilute
solution to a more concentrated solution, against the concentration gradient, requiring energy from
respiration
Diffusion
Particles move
down
the concentration gradient, does not require
energy
from respiration
Active transport
Particles are moved against the concentration gradient, requires
energy
from
respiration
Active transport in animals
Cells lining the human small intestine transport sugars like
glucose
from the lumen (
lower
concentration) into the cell (higher concentration)
Cells lining the human small intestine
Have many
mitochondria
to provide the
energy
for active transport
Active transport in plants
Root hair cells transport
ions
like
magnesium
from the soil (lower concentration) into the cell (higher concentration)
Root hair cells
Have many
mitochondria
to provide the
energy
for active transport
Plants need
magnesium
to make
chlorophyll
in the leaves
The concentration of ions in the soil is
lower
than the concentration inside the
root hair
cell