Understanding Cell Transport Mechanisms

What does the cell theory state about cells?

• Cells can reproduce independently

• Cells are not alive

• Cells are the basic unit of life

• All living things are made of cells

What is the simplest method for moving gases like oxygen and carbon dioxide in and out of cells?

• Facilitated diffusion

• Active transport

• Osmosis

• Diffusion

What is the structure of the cell membrane described as?

• Phospholipid bilayer

• Protein-lipid complex

• Carbohydrate layer

• Single-layered lipid

How does facilitated diffusion differ from simple diffusion?

• It does not involve the cell membrane

• It uses carrier proteins

• It requires ATP

• It moves substances from low to high concentration

What is the primary energy source for active transport?

• Carbon dioxide

• ATP

• Glucose

• Oxygen

Which ions are involved in the sodium-potassium pump?

• Chloride and fluoride

• Hydrogen and oxygen

• Sodium and potassium

• Calcium and magnesium

What is the main function of endocytosis?

• To move larger objects into the cell

• To produce energy

• To expel substances from the cell

• To synthesize proteins

Which type of endocytosis involves the intake of liquids?

• Phagocytosis

• Pinocytosis

• Receptor-mediated endocytosis

• Exocytosis

What is the role of exocytosis in cellular processes?

• Producing proteins

• Expelling materials from the cell

• Breaking down nutrients

• Generating energy