Fig. 2. Osmosis
A semi-permeable membrane allows solute to be concentrated inside cells (A). If cells are placed in a hypotonic solution, water will diffuse into the cell, causing it to swell (B). If a cell wall is not present, the cells will eventually burst (C).

Fig. 3.Differential Cell Charactistics

• Cell membrane
• Cell wall
• Size
• Nucleus
• DNA
• Chromosomes
• Cytoskeleton
• Cytoplasmic Organelles
• Mitochondria
• Chloroplast
• Vacuole
• Peroxisomes
• Lysosomes
• Golgi
• Endoplasmic Reticulum
• Ribosomes
• Multicellular

Fig. 1.1. The cell is the basic living unit. a. multicellular organism, b. tissue, c. cells, d. cell interactions

Fig. 1.7a  Prokaryotic cell

Fig. 1.7b  Eukaryotic cell.

Fig. 1.9  The eukaryotic cell cycle.