Active Transport Quiz

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Energy-driven movement.

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aimen niaz

United Arab Emirates

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Active Transport Quiz


Active Transport QuizVersion en ligne Energy-driven movement. par aimen niaz 1 What best defines active transport? a Movement of water across a membrane by osmosis b Movement of substances against their concentration gradient using energy c Movement along the concentration gradient without energy d Diffusion of small nonpolar molecules across the membrane 2 Which molecule commonly provides energy for primary active transport? a ATP b Glucose c ADP d NADH 3 What is the role of the sodium-potassium pump? a Maintains cell potential by moving Na+ out and K+ in b Senses membrane potential without moving ions c Imports Na+ and exports K+ d Helps diffusion of water 4 Which of the following is an example of primary active transport? a Ion movement down a gradient through a channel b Water moving by osmosis c Glucose diffusing through a channel d Sodium-potassium pump moving Na+ out and K+ in 5 Secondary active transport relies on what, indirectly? a Passive diffusion of ions b Mutual diffusion of water and solutes c A pre-existing gradient established by primary active transport d ATP hydrolysis at the same site 6 What is co-transport (symport) in active transport? a Two substances move in the same direction with one moving down its gradient b Only one molecule is transported c Two substances move in opposite directions d Energy is not required at all 7 What is antiport in active transport? a Two substances move in opposite directions across the membrane b Energy is not required for antiport c Two substances move in the same direction d Only water is transported 8 Which statement about active transport is true? a It may require ATP or another energy source b It does not require energy under any condition c It always results in net diffusion of solutes d It happens only in prokaryotes 9 Endocytosis is a form of active transport? a No, it only involves water movement b Yes, it requires energy to engulf material c No, it is passive diffusion d It is a type of osmosis without energy 10 Which scenario illustrates secondary active transport? a Na+ moving down its gradient without coupling b Glucose moving out of the cell by diffusion c Water entering the cell by osmosis d Glucose uptake into a cell driven by Na+ gradient from the Na+/K+ pump Feedback 1 Active transport requires energy to move substances up the gradient, unlike passive processes. 2 Primary active transport uses ATP directly to move ions like Na+ and K+. 3 It uses ATP to exchange Na+ out and K+ in, maintaining electrochemical gradients. 4 Direct use of ATP to pump ions against their gradient is primary active transport. 5 It uses gradients like Na+ to drive transport of other substances. 6 Symport uses one ion gradient to move another substance together. 7 Antiport exchanges ions or molecules across the membrane in opposite directions. 8 Active transport uses energy; some secondary forms use gradients created by primary transport. 9 Endocytosis uses cellular energy to engulf external substances. 10 Na+ gradient established by primary transport powers secondary active transport of glucose.

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Active Transport Quiz

Test

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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Active Transport QuizVersion en ligne

par aimen niaz

What best defines active transport?

Which molecule commonly provides energy for primary active transport?

What is the role of the sodium-potassium pump?

Which of the following is an example of primary active transport?

Secondary active transport relies on what, indirectly?

What is co-transport (symport) in active transport?

What is antiport in active transport?

Which statement about active transport is true?

Endocytosis is a form of active transport?

Which scenario illustrates secondary active transport?

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