The size and scale of cells: the basics | Starter Quiz | Oak National Academy

In which type of cell is the genetic material not enclosed within a membrane-bound nucleus?

• prokaryotic cell

• eukaryotic cell

Answer explanation

Prokaryotic cells don't have an enclosed membrane-bound nucleus. The genetic material is free in the cytoplasm.

Which piece of apparatus is used in science laboratories to view cells?

• telescope

• hand lens

• magnifying glass

• microscope

Answer explanation

Microscopes are used in science laboratories in order to view cells.

In microscopy, what does the term magnification mean?

• making small objects appear larger in order to see more detail

• the brightness of the light source

• the distance at which two distinct points of a specimen can still be seen

• the size of the microscope stage

Answer explanation

Magnification means making small objects appear larger in order to see more detail.

What is being described: "the distance at which two distinct points of a specimen can still be seen"?

• magnification

• brightness

• resolution

• microscopy

Answer explanation

Resolution is the distance at which two distinct points of a specimen can still be seen.

On which part of a microscope is the specimen placed in order to view it?

Answer explanation

In order to view a specimen it is placed on the stage.

What is the purpose of the objective lenses on a light microscope?

• to adjust the magnification

• to control the amount of light

• to hold the microscope slide

• to provide structural support

• to adjust the focus

Answer explanation

The objective lenses are responsible for magnifying the specimen, and they are usually mounted on a rotating nosepiece for easy adjustment.