Question

Which of the following are correct? I. Hold the middle mouse button to rotate the model on the screen. II. To pan the model, hold down the Ctrl key and the middle mouse button . III. Use the mouse scroll wheel to zoom in and out of the model.

Answer 1

According to the provided reference, to manipulate a protein model, rotating is done with the left mouse button, selecting with Ctrl + left mouse button, changing size with the right mouse button, and translating with Ctrl + right mouse button. Panning is not performed with the middle mouse button as stated in the original question.

Step-by-step explanation:

The instructions given in the question seem to pertain to manipulating a 3D model or structure, commonly a task in software applications for subjects like bioinformatics, molecular modeling, or computer-aided design. Based on the reference provided, the correct actions to manipulate a protein model using a cursor (mouse) are as follows:

• Rotate Protein: Use the left mouse button along with moving the cursor.
• Select Protein: Use Ctrl + left mouse button and move the cursor.
• Change Size of Protein: Use the right mouse button with cursor movement.
• Translate Protein: Hold Ctrl + right mouse button and move the cursor.
• Identify specific amino acids by placing the cursor over the protein.

To address the original question, holding the middle mouse button to rotate the model is not listed in the provided reference, while panning the model is done with Ctrl + right mouse button, not the middle mouse button. Zooming using the mouse scroll is not mentioned here, but it's a common function in many modeling applications. It's important to refer to the specific software documentation for precise controls.

Answer 2

II and III are correct

Step-by-step explanation:

The software that the question is referring to here is the computer-aided design (CAD) software called Inventor by Autodesk.

I. Hold the middle mouse button to rotate the model on the screen. False

This will pan the model instead of rotating.

II. To pan the model, hold down the Ctrl key and the middle mouse button. True

Some versions need you to hold down the ctrl key and the middle mouse button to pan, while others is just the middle mouse button then you drag the mouse around. The middle mouse is the scroll wheel on most mice today. You basically, just hold down the scroll wheel as you move the mouse to pan the model.

III. Use the mouse scroll wheel to zoom in and out of the model. True

To zoom in or out, one will need to rotate the mouse scroll wheel forward to zoom in and backward to zoom out.