Cell Structure and Microscope

Folded membranes are an advantage to a cell because

• cell processes can be more efficient

• the membranes provide a large surface area

• the membranes form interconnected compartments

• all of these

Tags

NGSS.MS-LS1-2

Who concluded that all plants are made of living cells?

• Virchow

• Hooke

• Schwann

• Schleiden

What do electron microscopes use to focus and magnify an image?

• glass lenses

• X rays

• electromagnets

• light

A major difference between a compound light microscope and a transmission microscope is that a light microscope image

• requires thin slices

• allows you to see fine detail of organelles

• can be made from living, unstained materials

• uses magnet lenses

The scientist who first described living cells as seen through a simple microscope was

• van Leeuwenhoek

• Schleiden

• Hooke

• Schwann

One advantage of electron microscopes over light microscopes is their

• size

• higher magnification

• two-dimensional image

• use of live specimens

If a cell contains a nucleus, it must be a(n)

• plant cell

• eukaryotic cell

• animal cell

• prokaryotic cell

Because the phospholipid molecules and some proteins are free to move, the plasma membrane is said to be a

• bilayer

• solid

• fluid mosaic

• fatty acid

Tags

NGSS.MS-LS1-2

A plasma membrane is made up of a(n)

• cholesterol layer

• enzyme bilayer

• lipid bilayer

• protein layer

Tags

NGSS.MS-LS1-2

Each of the following is a main idea of the cell theory except

• all organisms are composed of cells

• the cell is the basic unit of organization of organisms

• all cells are similar in structure and function

• all cells come from preexisting cells