Cell Transport

A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?

• The swollen gums have absorbed the saltwater solution.
• The saltwater solution lowers the temperature of the water in the gums.
• The salt in the solution has moved against the concentration gradient.
• The water in the gums has moved out due to the high concentration of salt in the solution. 

The cell membrane of the red blood cell will allow water, oxygen, and carbon dioxide to pass through. Because other substances are blocked from entering, this membrane is called

• perforated
• semi-permeable
• non-conducive
• permeable

Cell membrane transport that occurs without energy is called--

• active transport

• endocytosis

• passive transport

• exocytosis

The process where only water is allowed to pass through the cell membrane from a high to low concentration.

• meiosis
• respiration
• diffusion
• osmosis

What is it called when large molecules move across the cell membrane from an area of high concentration to an area of low concentration through a protein channel?

• Diffusion

• Osmosis

• Active Transport

• Facilitated Diffusion

How does a cell maintain homeostasis?

• By controlling what enters and leaves the cell

• Flexibility

• Protective barrier

• Structure and support

Cell membrane transport that occurs without energy is called--

• active transport

• endocytosis

• passive transport

• exocytosis

What is homeostasis?

• How the body releases oxygen

• Passive transportation

• Balance in the body

• Active transport

Osmosis is the movement of _____ across a membrane.

• food
• energy
• oxygen
• water

The cell membrane is made mostly of

• phospholipid monolayer and proteins
• phospholipid bilayer and proteins
• proteins and carbohydrates bilayer
• triglycerides and carbohydrates