Cell Structure

What cell theory says?

• All living things are made up of one or more cells.

• All substances that enter or leave a cell must pass through the surface of the cell.

• Cells are the basic units of structure and function in organisms.

• All cells arise from existing cells.

How were cell discovered?

• Using metrics units.

• Using science graphics.

• Through microscope observations.

• Observing the cell shape and size.

Cells can vary greatly in size and shape?

• TRUE

• FALSE

These are the cell features:

• Cell Membrane.

• Cytoplasm.

• Ribosome.

• Nucleus.

All substances that enter or leave a cell must pass through the surface of the cell.

Larger cells often have shapes that increase the surface area available for exchange.

A phospholipid layer covers a cell's surface and acts as a barrier between the inside of a cell and the cell's environment.

What does the cytoskeleton do?

• Microfilaments.

• Microtubules.

• Intermediate fibers.

• Helps the cell move, keep its shape, and organize its parts.

How does cells get energy?

• From the vacuole.

• The energy for cellular functions is produced by chemical reactions that occur in the mitochondria and chloroplast.

• From Golgi apparatus.

• From the endoplasmic reticulum.

There are three kinds of cytoskeleton fibers:

• Ribosomes.

• Microtubules.

• Intermediate fibers.

• Microfilaments.