Cell Membrane Structure and Function

A phospholipid has two parts. What are they called?

• Hydrophilic Head, Hydrophobic Tail

• Hydrophobic Head, Hydrophilic Tail

Describes the arrangement of the cell membrane as bendable and made of many parts. 

• The Fluid Mosaic Model 
• The Major Mobility Model 
• The Crazy Cell Model
• The Maze Model

Tags

NGSS.MS-LS1-2

Which term describes the relatively constant internal physical conditions of an organism?

• cell specialization

• homeostasis

• permeability

• unicellularity

Tags

NGSS.HS-LS1-3

Which of the following is the function of the cell membrane? Select all that apply.

• Provides instructions to the cell and other organelles.

• Regulates compounds in and out fo the cell.

• Allows cells to communicate and interact with other cells.

• Breaks down wastes and other compounds.

• Protects the cell from its environment.

Tags

NGSS.MS-LS1-2

The type of cellular transport that requires no energy.

• Active Transport
• Protein Pumps
• Passive Transport
• Endocytosis

What type of transport uses transport (channel) proteins to help molecules move from higher to lower concentrations?

• Protein Pumps
• Diffusion
• Facilitated Diffusion
• Osmosis

In pure water, a red blood cell from an animal will swell and burst, but a leaf cell from a plant will not. Which structure in the leaf cell will prevent the plant cell from bursting?

• cell membrane

• cell wall

• mitochondrion

• nucleus

Tags

NGSS.MS-LS1-2

During diffusion, molecules tend to move

• up the concentration gradient

• from an area of lower concentration to an area of higher concentration

• in a direction that doesn’t depend on concentration

• down the concentration gradient

When particles move up the gradient, from a low concentration to high concentration while requiring energy like it does to move a boulder up a hill, it is called _______.

• Passive Transport

• Active Transport

A cell membrane has pores that allow certain materials to pass through. This is a type of cell membrane.

• Permeable
• In high concentration
• At equilibrium
• In low concentration

Tags

NGSS.MS-LS1-2