13. What is the relationship
between concentration
gradient and active and
passive transport?

Gap-fill exercise

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Passive transport is movement of
substances membranes in favour
their concentration gradient, .e.,
from a more region to a
concentrated region. Active
, on the other , is the
transport substances across
membranes their concentration
gradient, a less concentrated a
more concentrated . In passive
transport, it is spontaneous,
is no energy ; the active
transport requires energy
(work) occur.

Active transport to maintain or
the concentration gradient a
substance between regions while
passive acts in a to
reduce the gradient.