€¦  · Web view4. In the diagram to the right, the cell is allowing some molecules to enter and getting rid of others. This is necessary to maintain _____. 5. 6. For questions

Name: ______________________________________ Date: ___________ Period: __________

5.12 Diffusion and Active Transport

Do First – Answer each of these six questions in your DFAD

1. Which of the following best describes the process of diffusion?

A. Movement of particles that require energyB. Movement of water across a permeable membraneC. Movement of particles from a higher concentration to a lower concentrationD. Movement of particles from a lower concentration to a higher concentration.

2. Diffusion is a type __________________ transport

3. What kind of permeability allows some molecules to pass through depending on size or shape? _________________________

4. In the diagram to the right, the cell is allowing some molecules to enter and getting rid of others. This is necessary to maintain _____________________.

For questions 5 and 6, label the mode of passive transport on the left and right side on the diagram. Look for the concentration gradient and if a protein is present.

5. __________________

6. __________________

Cell TransportPassive Transport Active Transport

Does ________ require _______________ Requires ____________

From _____________ to _________________ From ____________ to ____________

___________ the Concentration Gradient _________ the concentration gradient

______________ - the random movement of particles from a HIGH to a LOW concentration.

Active Transport Slide

_______________________ – Movement of particles that are too big with the use of ______________________

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5. 6.

Word Bank for 5 and 6

Facilitated DiffusionDiffusion

Name: ______________________________________ Date: ___________ Period: __________

Active Transport - movement of molecules from an area of ___________ concentration to an area of ___________ concentration.

Does require ______________________ (What do we call energy from the mitochondria?

________)

Active transport is usually associated with __________________ high concentrations of _____________ that the cell needs, such as ions, glucose and amino acids.

Particles like glucose and amino acids are usually mush larger that water molecules. Which is why active transport is needed. Most active transports use _______________ to help move across cell membranes.

Compare and Contrast

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Diffusion Both Facilitated Diffusion

Passive Transport Active Transport Both

Name: ______________________________________ Date: ___________ Period: __________

There are three different molecules being transported across the membrane in the cell.

4. Suppose molecule A is leaving the cell. What type of transport is this? How do you know

5. Suppose that molecule C cannot leave the cell. Is this cell impermeable or permeable to the membrane?

6. Where is the HIGH concentration and LOW concentration? Inside or outside the cell

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2.

3.

4

Name: ______________________________________ Date: ___________ Period: __________

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