active transport Flashcards
(5 cards)
1
Q
what does active transport require
A
ATP (Adenosine triphosphate
2
Q
what are protein pumps
A
Moves molecules against their concentration gradient (e.g.,
sodium-potassium pump in nerve cells)
3
Q
what is endocytosis
A
the cell engulfs large molecules or particles
4
Q
what is the difference between Phagocytosis and Pinocytosis
A
Phagocytosis - (“Cell eating”) – Engulfing solids like bacteria.
Pinocytosis - (“Cell drinking”) – Engulfing liquids
5
Q
what is exocytosis
A
the cell expels substances (e.g., neurotransmitter release in nerve
cells).
