Unit 3: Special Organelles

Check all the functions that describe the job of lipids.

• Long term energy

• Insulation

• Genetic Information

• Make up the cell membrane

Lipids are made of monomers called:

• monosaccharides

• fatty acids

• amino acids

• nucleotides

What is the job of the cell membrane?

• To protect the cell

• To allow the passive transport of molecules

• To control the cell functions

• To produce ATP energy for the cell

Tags

NGSS.MS-LS1-2

To allow some things to enter, while blocking other things from entering.

• Impermeable

• Permeable

• Selectively Permeable

• Fluidly Permeable

Check all that are true about the cell membrane.

• Two layers

• Made of phospholipids

• Contains no proteins

• Three layers

Which parts of the cell membrane are used when molecules are too large to fit through the bilayer?

• Cholesterol

• Carbohydrates

• Protein Channels

• Nucleic Acids

The part of the cell membrane attracted to water and facing outward.

• Hydrophilic heads

• Hydrophilic tails

• Hydrophobic heads

• Hydrophobic tails

The part of the cell membrane repelled by water and facing inward.

• Hydrophilic heads

• Hydrophilic tails

• Hydrophobic heads

• Hydrophobic tails

Describes the movement of molecules during passive transport.

• High to Low

• High to High

• Low to High

• Low to Low

Describes the movement of molecules during active transport.

• High to Low

• High to High

• Low to High

• Low to Low