Module 1 biology- cells and tissues: cellular review

The smallest structural and functional living unit is a ?

how many different types of human cells are in the body?

human cells have 3 components shared

• Cell membrane, cytoplasm, nucleus
• Cytoskeleton, vacuole, lysosome
• Mitochondria, endoplasmic reticulum, Golgi apparatus
• Cell wall, chloroplast, ribosome

• - define cell boundaries

• - control interaction with other cells

• - controls the movement of substance in and out of the cell

• Cell wall
• Cytoplasm
• Nucleus
• plasma membrane functions and structure

referred to as being selectively permeable composed of

The large majority of plasma membrane is?

phospholipids (lipid bilayer)

• 75%

• 25%

• 37%

• 50%