30 Questions
What is the main characteristic of passive transport?
The movement of molecules is from an area of higher concentration to an area of lower concentration
What happens when a cell is placed in a hypertonic solution?
Water moves from inside the cell into the solution, causing the cell to shrink
What is the result of osmosis?
The diffusion of water through a selectively permeable membrane
What is a hypertonic solution characterized by?
It has a lower concentration of solutes and a higher concentration of water than inside the cell
What type of transport refers to the movement of particles down their concentration gradient?
Simple Diffusion
What is the main characteristic of isotonic solution?
It has an equal concentration of solutes to the concentration inside the cell
Which process describes the movement of larger molecules like glucose through the cell membrane?
Facilitated Diffusion
What happens to a cell when placed in a hypotonic solution?
It swells and bursts open (cytolysis)
What type of transport requires energy to move molecules against the concentration gradient?
Active Transport
What are proteins that work as pumps and are involved in the active transport of ions across the membrane called?
Protein Pumps
What happens in exocytosis?
Large amount of materials exits the cell via fusion with the cell membrane
What suffix is used for enzymes?
-ase
Which type of enzymes catalyzes oxidation reactions?
Oxidoreductases
What does receptor-mediated endocytosis involve?
Endocytosis triggered by specific molecules binding to receptors on the cell membrane
What type of solution has a lower concentration of solutes and a higher concentration of water than inside the cell?
Hypotonic Solution
What happens when large vesicles are used to transport materials through the membrane?
Bulk Transport
What is the main characteristic of passive transport?
Movement from higher concentration to lower concentration
What is the result of placing a cell in a hypertonic solution?
Water moves into the cell
What is characteristic of isotonic solution?
Water moves equally in both directions
What describes the movement of particles down their concentration gradient?
Simple diffusion
What happens when large vesicles are used to transport materials through the membrane?
Exocytosis
What type of transport requires energy to move molecules against the concentration gradient?
Active transport
What is the main characteristic of facilitated diffusion?
Movement of larger molecules through the cell membrane
Which type of solution has a higher concentration of solutes and a lower concentration of water than inside the cell?
Hypertonic solution
What is the result of a cell being placed in a hypertonic solution?
Cell shrinks and may die
What is the main characteristic of active transport?
Requires energy to move molecules against the concentration gradient
What happens in endocytosis?
Solids enter the cell
What are enzymes?
Biological catalysts that speed up chemical reactions
What type of enzymes catalyzes oxidation reactions?
Oxidoreductases
What happens to a cell when placed in a hypotonic solution?
Cell swells and bursts open (cytolysis)
Test your knowledge of transport mechanisms in biology with this quiz covering passive transport, active transport, and concentration gradients. Explore the movement of substances across cell membranes and the effects of hypertonic solutions.
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