Cell Transport Processes

What is the main difference between facilitated diffusion and simple diffusion?

• Type of molecules transported

• Use of carrier or channel proteins

• Energy requirement

• Direction of movement

Explain the role of carrier proteins in facilitated diffusion.

• Carrier proteins are not found in cell membranes.

• Carrier proteins prevent the diffusion of molecules across the cell membrane.

• Carrier proteins aid in the facilitated diffusion of molecules across the cell membrane.

• Carrier proteins are only involved in active transport, not facilitated diffusion.

How does active transport differ from passive transport?

• Active transport requires energy to move substances across the cell membrane.

• Active transport moves substances with the help of osmosis

• Passive transport requires energy to move substances across the cell membrane

• Active transport moves substances from an area of high concentration to an area of low concentration

Describe the process of endocytosis in cells.

• Cells absorb molecules by engulfing them in a vesicle.

• Endocytosis is the process of cell division

• Cells release molecules through vesicles

• Cells absorb molecules through photosynthesis

What are the different types of endocytosis and how do they differ?

• Exocytosis, osmosis, and diffusion

• Active transport, facilitated diffusion, and simple diffusion

• Phagocytosis, exocytosis, and receptor-mediated endocytosis

• Phagocytosis, pinocytosis, and receptor-mediated endocytosis

Explain the mechanism of exocytosis in cells.

• The release of substances from the cell through diffusion

• The process of breaking down substances within the cell

• The fusion of vesicle membrane with the cell membrane to release substances

• The movement of substances into the cell through the cell membrane

What is the role of vesicles in exocytosis?

• Producing energy for the cell

• Regulating cell metabolism

• Transporting and releasing substances from the cell

• Storing genetic material in the nucleus

How does osmosis differ from diffusion?

• Osmosis only occurs in plant cells, while diffusion only occurs in animal cells.

• Osmosis and diffusion are the same process.

• Osmosis involves the movement of particles, while diffusion involves the movement of water molecules.

• Osmosis involves the movement of water molecules, while diffusion involves the movement of particles.

Explain the concept of hypertonic, hypotonic, and isotonic solutions in osmosis.

• Hypertonic, hypotonic, and isotonic solutions are all the same and have no effect on osmosis.

• Hypertonic, hypotonic, and isotonic solutions refer to the relative concentration of solutes inside and outside of a cell, affecting the movement of water through osmosis.

• Isotonic solutions have a higher concentration of solutes inside the cell compared to outside, leading to water movement out of the cell.

• Hypertonic solutions cause water to move out of the cell, while hypotonic solutions cause water to move into the cell.

Describe the role of the cell wall in osmosis in plant cells.

• The cell wall absorbs water during osmosis

• The cell wall is permeable to all types of solutes

• The cell wall prevents the cell from bursting in hypotonic solutions.

• The cell wall has no effect on osmosis