AQA required practical mocroscopy

How can the total magnification be calculated?

• By adding the magnification of the eyepiece lens to the magnification of the objective lens
• By dividing the magnification of the eyepiece lens by the magnification of the objective lens
• By subtracting the magnification of the eyepiece lens from the magnification of the objective lens
• By multiplying the magnification of the eyepiece lens by the magnification of the objective lens

What is used to show the magnification on a label drawing of cells observed under an optical microscope?

• A pencil
• A magnification scale
• A clear plastic ruler
• A scale bar

What is the purpose of the fine focusing dial?

• To reflect light up through the slide
• To hold the microscope slide in place
• To adjust the magnification
• To bring the cells into clear focus

What is the magnification of the eyepiece lens?

• 4x
• 40x
• Not mentioned
• 10x

What is the purpose of placing a clear plastic ruler over the stage when using an optical microscope?

• To adjust the magnification
• To measure the diameter of the field of view
• To make a clear label drawing of the cells
• To bring the cells back into focus

What is the purpose of adjusting the fine focusing dial when using an optical microscope?

• To bring the cells back into focus
• To measure the diameter of the field of view
• To adjust the magnification
• To make a clear label drawing of the cells

What should be included in a label drawing of cells observed under an optical microscope?

• The nucleus and the mitochondria
• The mitochondria and the cell membrane
• The cytoplasm and the cell membrane
• The nucleus, the cytoplasm, and the cell membrane

What are the lenses above the stage called?

• Mirrors
• Focusing dials
• Eyepiece lenses
• Objective lenses

What is the purpose of the coarse focusing dial?

• To hold the microscope slide in place
• To adjust the magnification
• To reflect light up through the slide
• To bring the cells into focus

What can be seen as tiny flecks when using an optical microscope?

• The cytoplasm
• The nucleus
• The cell membrane
• Mitochondria