Membrane Transport Check-In

Cell membranes are made of 2 layers. One part of the membrane is ​ (a)   (attracted to water) the other part of the membrane is ​ (b)   (repels water).

• hydrophilic
• hydrophobic
• hyperbolic
• hypertonic
• isotonic
• hypotonic

Tags

NGSS.MS-LS1-2

Cell membranes are ------- permeable. This means that some molecules CAN pass through the membrane while other molecules CANNOT.

• selectively
• completely
• non

• aggressively

Tags

NGSS.MS-LS1-2

What is passive transport?

• When a cell uses energy to move molecules through the membrane

• When a cell moves molecules from an area of low concentration to high concentration

• When a cell uses no energy to move molecules through the membrane

• When plant or mushroom cells move molecules inside them but not animal cells

Which picture shows the structure of a cell membrane?

• 
• 
• 
• 

Tags

NGSS.MS-LS1-2

Use the prompts to make a Venn Diagram about diffusion and facilitated diffusion?

Groups:

(a) Facilitated Diffusion

,

(b) Things that are the SAME

,

(c) Simple Diffusion

• Tends to be for very small molecules

• Tends to be for larger molecules

• Uses channels or gates to allow molecules through the membrane

• 
• 
• Uses NO Energy

• Moves molecules from High to Low concentration

• Molecules can pass through the membrane without help

During ​ (a)   Transport cells move items from areas of ​ (b)   concentration to areas of ​ (c)   concentration (which is ​ (d)   the natural flow) by using ​ (e)  

• Active
• High
• Low
• Passive
• against
• with
• energy
• electricity

When an animal, or cell, grows inside what feature grows more than all the others?

Because the hairs make a barrier between the insect and the water it acts like a cell membrane.

Oxygen and Carbon Dioxide are able to diffuse in and out because they simply move . . .

• From

  High Concentration

  to

  Low Concentration

• From

  Low Concentration

  to

  High Concentration

• From

  High Energy

  to

  Low Energy

• From

  Low Energy

  to

  High Energy

Tags

NGSS.MS-LS1-3

Cells need to be small in size because . . .

Check ALL that apply

• Cells can't control how fast diffusion happens

• The larger they are the farther any molecule has to travel inside of it

• It is more efficient to move molecules through a bunch of tiny cells than a couple of really big ones

Based on what you just learned about surface area, Volume, and cell size:

What would be a reason why cells in your lungs would need to be very branched or wrinkly in structure?

• Maximize surface area for gas to move in and out of cells

• Prevent harmful materials from getting into lungs

• To Reduce the size of the lung and volume

• To communicate with other lung cells about what is in the air

Tags

NGSS.MS-LS1-2