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active transport
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Cards (16)
What is active transport?
Movement of molecules against their
concentration gradient
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How does active transport differ from diffusion?
Active transport requires
energy
, diffusion does not
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What analogy is used to describe diffusion?
Water flowing
downhill
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What is the energy source for active transport?
Energy from
cellular respiration
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Where does cellular respiration mainly occur?
In the
mitochondria
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What are ATP molecules compared to?
Little
batteries
for energy transport
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What is the definition of active transport?
Movement of molecules across a
cell membrane
From lower concentration to higher concentration
Requires energy from
cellular respiration
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Why do plants need to absorb water and mineral ions?
To
survive
and grow
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What are root hair cells adapted for?
Absorbing water and
mineral ions
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How do root hair cells increase absorption efficiency?
By having long
hair-like protrusions
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Why can't plants absorb minerals by diffusion?
Minerals are at higher
concentration
inside cells
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What is a key adaptation of root hair cells related to energy?
Having many
mitochondria
for energy production
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What are the key features of root hair cells?
Long hair-like protrusions for surface area
Many
mitochondria
for energy production
Function to absorb water and
mineral ions
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What minerals do plants need for chlorophyll production?
Magnesium
ions
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What do plants need nitrates for?
To produce
proteins
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What is the role of cellular respiration in active transport?
It
provides
energy
for
the
process
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