Cell Structure and Transport

Ever wondered what makes you different from a plant? It all comes down to what's inside your cells! Both animal and plant cells share some basic parts that keep life running smoothly.

Animal cells contain five key components: the cytoplasm $a jelly-like substance$, the nucleus (the control centre), ribosomes (protein makers), mitochondria (the powerhouses), and the cell membrane (the outer boundary). These parts work together like a perfectly organised team.

Plant cells have all the same parts as animal cells, plus three extras that make them special. The cell wall gives plants structure and strength, chloroplasts capture sunlight for photosynthesis, and a large vacuole stores water and helps maintain the plant's shape.

Understanding cell transport is crucial for your exams. Diffusion happens when particles move from areas where there are loads of them to areas where there are fewer - think of how perfume spreads across a room. Osmosis is similar but specifically involves water molecules moving through membranes to balance concentration levels.

Quick Tip: Remember that osmosis is just diffusion, but only for water molecules moving across membranes!