Cell Transport and Homeostasis

Which of the following is a function of the cell membrane?

breaks down lipids, carbohydrates, and proteins from foods
stores water, salt, proteins, and carbohydrates
regulates the movement of materials into and out of the cell
keeps the cell wall in place

Diffusion occurs because...

molecules constantly move and collide with each other.
cellular energy forces molecules to collide with each other.
cellular energy pumps molecules across the cell membrane.
molecules are attracted to one another.

Which means of particle transport requires input of energy from the cell?

diffusion
osmosis
facilitated diffusion
active transport

The diffusion of water across a selectively permeable membrane is called...

pinocytosis
osmosis
active transport
osmotic pressure

Phagocytosis and pinocytosis are two types of active transport and both are forms of…

Exocytosis
Phagocytosis
Endocytosis
Osmosis

A substance that moves by passive transport tends to move…

Away from the area of equilibrium
Away from the area where it is less concentrated
Away from the area where it is more concentrated
Towards the area where it is more concentrated

Which of the following is an example of active transport?

Facilitated diffusion
Osmosis
Endocytosis
Diffusion

Carbon dioxide and oxygen are molecules that can move freely across a cell membrane. What determines the direction that carbon dioxide and oxygen molecules move?

Concentration gradient across the cell membrane
Configuration of phospholipids in the cell membrane
Location of receptors on the surface of the cell membrane
Location of carbohydrate side chains

A sodium-potassium pump within a cell membrane requires energy to move sodium and potassium ions into or out of a cell. The movement of glucose into or out of a cell does not require energy. Which statement best describes the movement of these materials across a cell membrane?

Sodium and potassium ions move by active transport, and glucose moves by osmosis
Sodium and potassium ions move by active transport, and glucose moves by facilitated diffusion
Sodium and potassium ions move by facilitated diffusion, and glucose moves by osmosis
Sodium and potassium ions move by facilitated diffusion, and glucose moves by active transport

Insulin is a protein that is produced by pancreatic cells and secreted into the bloodstream. Which of the following options correctly lists the order of the structures through which insulin passes from its production to its exit from the cell?

Rough ER, Golgi apparatus, transport vesicles, cell membrane.
Rough ER, lysosome, Golgi, cell membrane
Rough ER, Golgi apparatus, smooth ER, cell membrane.
Rough ER, transport vesicles, vacuole, cell membrane.