Cell Transport EOC Review

Which organelle modifies proteins before they are either used by the cell or transported out of the cell?

• endoplasmic reticulum

• Golgi complex

• mitochondrion

• ribosome

Which of the following is considered to be passive transport?

• facilitated diffusion

• sodium potassium pump

• endocytosis

• exocytosis

The cell membrane contains channels and pumps that help move materials from one side to another. What are these channels and pumps made of?

• carbohydrates

• proteins

• lipids

• nucleic acids

What do cells need to move materials opposite the concentration gradient?

• energy

• water molecules

• isotonic solution

• channel proteins

What is the movement of materials from a low concentration gradient to a high concentration gradient?

• active transport

• passive transport

• osmosis

• diffusion

Which scenario below could be used to represent how a cell uses active transport to move molecules across a membrane?

• a fish swimming upstream

• a child riding a bike down a hill

• a car driving through a mountain tunnel

• a sailboat moving in the ocean

Which molecules form the bilayer of the cell membrane?

• carbohydrates

• cholesterol

• phospholipids

• proteins

In the process of diffusion, molecules move:

• from areas of low concentration to areas of high concentration

• from areas of high concentration to areas of low concentration

• back and forth equally

• not at all

Which process involves the movement of water across a selectively permeable membrane?

• A) Active transport

• B) Osmosis

• C) Facilitated diffusion

• D) Endocytosis

What is the primary function of the cell membrane in cell transport?

• A) To provide energy for the cell

• B) To control the movement of substances in and out of the cell

• C) To produce proteins

• D) To store genetic information