Question

question 10 (1 point)
match the following terms to the correct letter in the image.
facilitated diffusion with a
carrier protein

1. a

facilitated diffusion with a
channel protein

1. b

simple diffusion

1. c

active transport

1. d

Explanation:

• Facilitated Diffusion with a Carrier Protein (A): Carrier proteins bind to specific molecules (like the blue sphere in A) and change shape to transport them across the membrane.
• Simple Diffusion (B): Small non - polar molecules (such as \(H_2O\) and \(O_2\)) move directly through the lipid bilayer without the help of proteins.
• Active Transport (C): Molecules (the positively charged blue spheres) are moved against their concentration gradient (from lower to higher concentration), which requires energy (usually ATP, not shown here but implied by the movement against the gradient).
• Facilitated Diffusion with a Channel Protein (D): Channel proteins form a pore. Here, \(Na^+\) ions move through the channel protein down their concentration gradient.

Answer:

Facilitated Diffusion with a Carrier Protein: 1. A
Facilitated Diffusion with a Channel Protein: 4. D
Simple Diffusion: 2. B
Active Transport: 3. C