7 Ch 2-3 Discovering Cells

The invention of the microscope made it possible for people to discover

• plants

• skin

• cells

• animals

Which of the following statements is part of the cell theory?

• Only plants are composed of cells.

• All cells are produced from other cells.

• Cells are basic units of structure/function in living things

• Cells can be produced from nonliving matter.

Which of the following statements is NOT part of the cell theory?

• Cells are basic unit of structure/function in living things

• All cells are produced from other cells.

• All living things are composed of cells.

• Only animals are composed of cells.

How does the lens of a light microscope work?

• Each concave lens bends light to make object appear larger

• Each convex lens bends light to make object become larger.

• reflection of each concave lens makes object appear larger.

• Each convex lens bends light to make object appear larger.

What is the magnification when one lens has a magnification of 25, and other lens of 30?

• 15

• 750

• 30

• 45

What does the term resolution refer to?

• how sharp an image is

• how big an image can be

• how much light is needed to see an image

• how many lenses a microscope uses

How does magnification occur in an electron microscope?

• An electron beam creates an image.

• An electron beam makes the object become larger.

• Light is reflected by an electron beam.

• Light is changed into electrons by a convex lens.