Question

1. movement of molecules across cell membrane: (circle one) high to low (with the concentration gradient) or low to high (against the concentration gradient) 2. type of cell transport: (circle one). passive transport or active transport 3. is energy required: yes or no 4. is a protein channel or transport protein present in cell membrane? yes or no 5. type of cell transport mechanism illustrated in picture? (circle one) a. osmosis b. diffusion c. active transport facilitated diffusion

Explanation:

Step1: Observe concentration gradient

The image shows molecules moving from an area of high concentration to an area of low concentration.

Step2: Recall cell - transport types

Passive transport is the movement of molecules from high to low concentration without energy.

Step3: Determine energy requirement

Since it's passive transport, no energy is required.

Step4: Check for transport proteins

There are no protein channels or transport proteins shown in the picture.

Step5: Identify transport mechanism

This is diffusion as it is the movement of molecules from high to low concentration without the need for transport proteins and without energy input.

Answer:

1. high to low (with the concentration gradient)
2. Passive transport
3. NO
4. NO
5. b. diffusion