A student uses a microscope to observe human cheek cells.
Cheek cells contain mitochondria. What is the main function of mitochondria?
Name one type of human cell that does not contain mitochondria.
Under a high-power microscope, the image length of a single mitochondrion is measured to be 4.2 cm4.2\text{ cm}4.2 cm. The real length of this mitochondrion is 1.5 μm1.5\ \mu\text{m}1.5 μm. Calculate the magnification of the image.
Use the equation: magnification=size of imagereal size of object\text{magnification} = \frac{\text{size of image}}{\text{real size of object}}magnification=real size of objectsize of image
Show your working.
State two advantages of using an electron microscope instead of a light microscope to study organelles like mitochondria.