Prep work quiz week 1

 

Which is the correct formula for calculating the magnification of an image?

• Magnification = Image (measured) divided by actual

• Magnification = Image (measured) multiplied by actual

• Magnification = Actual divided by image (measured)

• Magnification = Actual multiplied by image (measured)

Which of the following are advantages of electron microscopes over light microscopes?

• Lower magnification

• Higher magnification

• Lower resolution

• Higher resolution

Which of these are disadvantages of an electron microscope?

• Higher resolution

• Higher magnificaiton

• Complex preparation

• Large & more expensive

What is 3 cm in micrometres?

• 30 μm  

• 3000 μm

• 30,000 μm  

• 300,000 μm

Why are stains sometimes added to specimens when viewing them under an optical microscope? Choose two answers.

• To add contrast

• To make them look pretty

• To make certain cell structures invisible

• To make certain cell structures visible

When drawing biological diagrams, which rules should be followed?

• Shading should be included

• Lines can be sketched

• Label lines should be separate and not cross over

• A title is needed that includes magnification or size

 

Which parts of a plant cell are NOT present in animal cells?

• Cell wall

• Chloroplasts

• Mitochondria

• Large central & permanent vacuole

Which of the following can be viewed with a light microscope?

• Vacuole

• Chloroplast

• Nucleus

• Ribosomes

 

Which of the following are NOT found in prokaryotic cells?

• Nucleus

• Ribosomes

• Mitochondria

• Vacuole

What is the role of a plasmid?

• To create cytoplasm

• To control the cell

• To transfer genetic material from one cell to another

• To make enzymes