Multiple Choice
A patient is in need of hydration. Which type of solution are the patient's cells most likely in?
18
views
6. The Membrane
Osmosis
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the name given to the process by which water molecules move across a selectively permeable membrane?
A
Osmosis
B
Diffusion
C
Facilitated diffusion
D
Active transport
Verified step by step guidance1
Step 1: Begin by understanding the key terms in the question. 'Water molecules' and 'selectively permeable membrane' are crucial clues. Water movement across membranes is typically associated with a specific biological process.
Step 2: Recall the definition of osmosis. Osmosis is the movement of water molecules from an area of higher water concentration to an area of lower water concentration across a selectively permeable membrane.
Step 3: Compare osmosis with other processes listed in the options. Diffusion refers to the movement of molecules (not specifically water) from high to low concentration, while facilitated diffusion involves transport proteins aiding molecule movement. Active transport requires energy to move molecules against their concentration gradient.
Step 4: Identify that osmosis is unique because it specifically involves water molecules and does not require energy, unlike active transport.
Step 5: Conclude that the correct answer is 'Osmosis,' as it matches the description of water movement across a selectively permeable membrane.
Related Videos
Related Practice
