Which reasons are the best for using only the fine-focus knob under high power? select two. the diaphragm will not open wide enough by using the fine-focus knob. the stage or objectives move very little when the knob is turned. the objective will not move enough to risk breaking the glass slide. the coarse-focus knob will not turn when the microscope is set for high power

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.