Question

movement of molecules across cell membrane: (circle one) high to low (with the concentration gradient) or low to high (against the concentration gradient)
type of cell transport: (circle one). passive transport or active transport
is energy required: yes or no
is a protein channel or transport protein present in cell membrane? yes or no
type of cell transport mechanism illustrated in picture? (circle one)
a. osmosis b. diffusion c. active transport facilitated diffusion

Explanation:

Step1: Analyze concentration gradient

The diagram shows molecules moving from an area of high concentration outside the cell to an area of low concentration inside the cell, so it is high to low (with the concentration gradient).

Step2: Determine type of transport

Since it's moving with the concentration gradient, it is passive transport.

Step3: Check energy requirement

Passive transport does not require energy, so NO.

Step4: Observe protein channel

There is a protein - channel (the purple structure in the membrane), so YES.

Step5: Identify transport mechanism

The presence of a protein channel and movement with the concentration gradient indicates facilitated diffusion.

Answer:

Movement of molecules across cell membrane: high to low (with the concentration gradient)
Type of cell transport: Passive transport
Is Energy required: NO
Is a protein channel or transport protein present in cell membrane? YES
Type of cell transport mechanism illustrated in picture: d. facilitated diffusion