Co-transport (AQA A-Level Biology): Flashcards
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Definition of co-transport
Definition of co-transport
Two substances moved across membrane via same carrier; one down gradient, one against
Another name for co-transport
Another name for co-transport
Secondary active transport
Why 'secondary' active transport
Why 'secondary' active transport
Uses energy from gradients, not ATP directly
Ions co-transported with glucose
Ions co-transported with glucose
Sodium ions
What creates the sodium gradient
What creates the sodium gradient
Sodium-potassium pumps
Co-transport protein has binding sites for
Co-transport protein has binding sites for
Sodium ions and nutrients
Length of microvilli
Length of microvilli
m
Structure formed by microvilli
Structure formed by microvilli
Brush border
How nutrients exit epithelial cells to blood
How nutrients exit epithelial cells to blood
Facilitated diffusion
Energy source for moving nutrients against gradient
Energy source for moving nutrients against gradient
Sodium gradient