BIOLOGY Week 1-3 review

This regulates what enters and leaves the cell and separates the internal environment of the cell from the external environment. Found in plant and animal cells

• Cell Membrane

• Cell Wall

• Cytoplasm

• Cholesterol

The term to describe a cell membrane that allows some substances to pass, but not others

• Bilayer

• Semi conservative

• Selectively permeable

• Phospholipid

This is the part of the bilayer that is attracted to water (because it is polar)

• phosphate head

• fatty acid tails

• cholesterol center

• phospholipid bilayer

This is the part of the bilayer that is not attracted to water {because it is non-polar)

• phosphate head

• fatty acid tails

• cholesterol center

• phospholipid bilayer

Means "water lovings" Describes the heads (circle portion) of the phospholipids

• hydrophillic

• hydrophobic

• hydroelectric

• hydroloving

Means water fearing. Describes the tails of the phospholipids

• hydrophillic

• hydrophobic

• hydroelectric

• hydroloving

This component of the cell membrane allows the transport of specific substances across a cell membrane.

• glycoprotein

• glycoplipid

• cholesterol

• protein channel

This component of the cell membrane provides stability and flexibility for the structure.

• glycoprotein

• glycoplipid

• cholesterol

• protein channel

Which image correctly shows the way phospholipids arrange themselves in the cell (plasma) membrane?

• 
• 
• 
• 

Cell membrane structures that are embedded in the phospholipid bilayer that identify and communicate with extracellular surroundings.

• Cholesterol

• Carbohydrate Chains

• Integral Proteins

• Peripheral Proteins