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Epithelial cells lining the digestive tract.

Skin, heart muscle, and neck of the uterus.

Adjacent cells held together by proteins and.

Transport Across MembranesActive Transport with Lettuce cells? How could you return them to Lettuce this way, what would happen to the Protist without ruining the food is to place the If produce is grown in this type ofįertilizer, it is possible that it will beĬontaminated with the protozoan that causesĪmoebic dysentery.

In some countries, human waste is used as aįertilizer.

The biology lab and you accidentally placed theįreshwater fish in the saltwater tank.

Oops! You were cleaning out the aquariums in.

Plasma membranes of her blood cells? What willĬonsequence? Why is proper hydration important In which direction will water move across the

As a person becomes very dehydrated, theĬoncentration of water in her blood decreases.

H2O concentration same in cell as around cell.

Diffusion of water across cell membrane.

Substances move down concentration gradient.

Transport Across MembranesPassive Transport

Embedded in (integral) or attached to surface.

Makes bilayer stronger, less flexible, and lessįluid Mosaic ModelMosaic of Proteins (tiles).

Some very small or uncharged, lipid soluble.

Hydrophilic molecules cannot pass easily through.

Fluid because phospholipid molecules are not.

Two fatty acid chains (non-polar) tails linked to.Survival?What characteristics should thisįluid Mosaic Model Phospholipid Bilayer (grout) Why is the plasma membrane necessary for cell

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