Cell Membrane Review

Main component of the cell membrane.

• phospholipid

• protein

• carbohydrates

• nucleic acid

Function of the cell membrane.

• regulate what enters and leaves the cell

• speed up the rate of chemical reaction

• main energy source to all living things

• can be a hormone

Tags

NGSS.MS-LS1-2

The head of a phospholipid is?

• hydrophilic

• hydrophobic

• arachniphobia

• non-polar

Tags

NGSS.HS-PS1-2

The heads of the phospholipid are __________ and _________.

• hydrophilic, polar

• hydrophobic, nonpolar

• hydrophilic, nonpolar

• hydrophobic, polar

The tails of a phospholipid are __________ and ___________.

• hydrophobic and nonpolar

• hydrophilic and nonpolar

• hydrophilic and polar

• hydrophobic and polar

Always remember this about the arrangement of phospholipids in the bilayer.

• tails together heads apart

• tails apart head together

The hydrophobic tails of the phospholipid are always?

• hidden in the middle of the membrane

• exposed to the water in blood

• exposed to the water in cytoplasm

• face opposite of each other

The cell membrane is know as a?

• phospholipid bilayer

• phospholipid trilayer

• phosphocarbohydrate

• protein

These are found in the cell membrane and are used as channels or pumps to move stuff across the membrane.

• transport proteins

• receptor proteins

• enzymes

• carbohydrates

The hydrophilic heads of the bilayer?

• align to the water in the blood on the outside and water in cytoplasm on the inside.

• are hidden in the middle of the bilayer

• inner- layer faces inward outer-layer faces outward

• are aligned in the same direction