Question

1. how many different types of molecules are shown in model 1?

2 count and record the number of triangles and circles found on each side of the membrane.

1. which shape is larger?
2. describe the direction of the movement of the molecules in model 1?
3. which molecules are able to pass through the semi - permeable membrane? justify your answer.
4. if you left this \system\ for an extended period of time and then viewed it again, would you expect to find any changes in the concentrations of the molecules on either side of the membrane? justify your answer.

Explanation:

Step1: Identify molecule types

By observing the model, we can see two distinct - shaped molecules (triangles and circles), so there are two types of molecules.

Step2: Count shapes on each side

This requires visual counting of triangles and circles on both sides of the semi - permeable membrane. Without the actual count from the image, we can't provide numbers here, but the process is to simply count each shape on each side.

Step3: Compare sizes

Visually compare the size of the triangle and circle shapes in the model to determine which is larger.

Step4: Observe movement direction

Observe the arrows indicating the movement of molecules in the model to describe the general direction of movement.

Step5: Determine permeable molecules

Based on the size and the nature of the semi - permeable membrane (smaller molecules usually pass through), analyze which of the two types of molecules can pass through and justify using the concept of membrane permeability.

Step6: Predict long - term changes

Consider the process of diffusion (movement from high to low concentration). If there is a concentration gradient, over time, the concentrations on both sides of the membrane will change until equilibrium is reached. Justify using the principles of diffusion.

Answer:

1. Two
2. (Requires visual counting from the image, not provided here)
3. (Answer depends on visual comparison of shapes in the image)
4. (Answer depends on observing the arrows in the image)
5. (Answer depends on analysis of molecule size and membrane properties)
6. (Answer depends on understanding of diffusion principles and initial concentration gradients)