Diffusion and Selective Permeability in Biological Systems Quiz
Test your knowledge on diffusion, selective permeability, passive & active transport in biological systems with these 15 questions.
#1
Which of the following best describes diffusion?
Movement of molecules from an area of lower concentration to an area of higher concentration
Movement of molecules from an area of higher concentration to an area of lower concentration
Movement of molecules across a selectively permeable membrane
Passive transport of molecules with the help of energy
#2
What is the primary function of a selectively permeable membrane in biological systems?
To allow only small molecules to pass through
To prevent all molecules from passing through
To regulate the movement of specific molecules
To allow all molecules to pass through without discrimination
#3
Which of the following factors does NOT affect the rate of diffusion?
Temperature
Surface area
Molecular weight
Color of the molecules
#4
What is the term for the process by which cells engulf large particles or fluids from their surroundings?
Osmosis
Active transport
Facilitated diffusion
Endocytosis
#5
Which of the following is NOT an example of passive transport?
Simple diffusion
Facilitated diffusion
Active transport
Osmosis
#6
Which of the following is an example of passive transport across a biological membrane?
Facilitated diffusion
Active transport
Endocytosis
Osmosis
#7
In which of the following scenarios would osmosis occur?
Movement of water molecules from a region of low solute concentration to a region of high solute concentration
Movement of solute molecules from a region of high solute concentration to a region of low solute concentration
Movement of water molecules from a region of high solute concentration to a region of low solute concentration
Movement of solute molecules from a region of low solute concentration to a region of high solute concentration
#8
Which of the following substances typically diffuse most rapidly through a lipid bilayer?
Water
Glucose
Carbon dioxide
Sodium ions
#9
What type of transport process requires energy to move molecules against their concentration gradient?
Facilitated diffusion
Osmosis
Active transport
Simple diffusion
#10
What is the primary determinant of whether a molecule can passively diffuse through a membrane?
Size of the molecule
Temperature of the environment
Density of the molecule
Shape of the molecule
#11
Which statement best describes the role of carrier proteins in facilitated diffusion?
They actively transport molecules across the membrane against the concentration gradient
They allow the passage of only specific molecules through the membrane
They consume ATP to facilitate the movement of molecules across the membrane
They facilitate the movement of molecules down their concentration gradient without requiring energy
#12
Which of the following is a characteristic of passive transport?
Movement of molecules against the concentration gradient
Requires the use of ATP
Movement of molecules from high to low concentration
Occurs only in living organisms
#13
Which type of membrane protein is responsible for cell recognition and communication?
Receptor proteins
Transport proteins
Channel proteins
Cell adhesion proteins
#14
Which of the following is an example of transmembrane proteins?
Ion channels
Cell adhesion molecules
Receptor proteins
Glycoproteins
#15
Which of the following membrane proteins is responsible for facilitating the movement of ions across the membrane through a pore?
Channel proteins
Carrier proteins
Receptor proteins
Adhesion proteins
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