Exploring Cell Transport Mechanisms

The video tutorial from MooMooMath and Science covers the basics of cell theory, emphasizing that cells are alive and maintain homeostasis by moving substances in and out. It explains diffusion as a passive transport method, where particles move from high to low concentration without energy. Facilitated diffusion involves carrier proteins for substances like glucose. Active transport, requiring ATP, includes membrane pumps like the sodium-potassium pump. The video also discusses vesicle movements, endocytosis, and exocytosis, which help cells manage larger molecules.

What does the cell theory state regarding cells?

• Cells do not require energy to function

• Cells can only be seen with a microscope

• Cells are the basic unit of life

• All cells have a nucleus

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

• Facilitated diffusion

• Active transport

• Diffusion

• Osmosis

What is the composition of the cell membrane?

• Single layer of phospholipids

• Phospholipid bilayer

• Protein bilayer

• Double layer of carbohydrates

How do particles move during diffusion?

• From low to high concentration

• Randomly without direction

• From high to low concentration

• They do not move

What is required for facilitated diffusion?

• Water molecules

• ATP

• Carrier proteins

• Sodium ions

What is the role of ATP in active transport?

• It acts as a carrier protein

• It facilitates diffusion

• It forms the cell membrane

• It provides energy

What does the sodium-potassium pump do?

• Moves sodium and potassium ions without energy

• Facilitates diffusion of sodium and potassium ions

• Prevents sodium and potassium ions from entering the cell

• Moves sodium and potassium ions against the concentration gradient

What is endocytosis?

• A process to expel objects from the cell

• A method to produce ATP

• A type of facilitated diffusion

• A process to move larger objects into the cell

Which of the following is NOT a type of endocytosis?

• Receptor-mediated endocytosis

• Exocytosis

• Pinocytosis

• Phagocytosis

What is exocytosis?

• A type of active transport that requires no energy

• A method of passive transport

• A process to expel objects from the cell

• A process to move objects into the cell