Cells and Microscopes

The basic units of structure and function in living things are called:

• Atoms

• Cells

• Organelles

An instrument that makes small objects look larger:

• Microscope

• Barometer

• Triple Beam Balance

The rigid layer surrounding cells of plants:

• Cell wall

• Cell membrane

• Nucleus

The layer of a cell that controls which substances pass in and out of a cell:

• Ribosome

• cytoplasm

• Cell membrane

All cells have a cell membrane.

• True

• False

The cell's control center:

• Cell membrane

• Nucleus

• Mitochondria

Tiny structures inside of a cell that carry out specific functions:

• tissues

• organs

• organelles

Organelles that produce proteins:

• Ribosomes

• Mitochondria

• Cytoplasm

A thick, gel-like fluid between the cell membrane and the nucleus is called:

• mitochondria

• ribosomes

• cytoplasm

A network of membranes (inside the cell) that produces many substances:

• mitochondria

• endoplasmic reticulum

• ribosomes