biology

• plant and animal cells are eukaryotic cells and have a cell membrane, cytoplasm and nucleus
• bacteria is the most common type of prokaryote
• prokaryotes do not have a nucleus or organelles
• the cell wall protects bacteria from being squished by water pressure inside the cell
• eukaryotes can be single-celled (protists) or multicellular (plants, animals and fungi)
• a stem cell is an undifferentiated cell.
• plants require ions for a healthy growth.
• active transport requires energy from respiration.
• chloroplasts contain chlorophyll which absorbs light energy to make food through photosynthesis.
• photosynthesis uses carbon dioxide and water to produce glucose and oxygen.
• glucose is used as fuel for respiration.
• oxygen is released into the air during photosynthesis.
• many plant cells retain the ability to differentiate throughout life.
• cell divide in a series of stages called the cell cycle.
• bacteria multiply by simple cell division every 20 minuets.