Plant cell
A wall supports the cell, a vacuole holds cell sap and chloroplasts use light. A leaf cell’s structures reflect the needs of a plant.
Reference age · UK/US 12+ · East Asia 12+Open modelModel catalog · 04 / 05
Biology
A cell divides into two; each heartbeat pushes blood through the body. The models examine how cells work, how genetic information is passed on, and how organs work together to keep an organism alive.
12models03learning tracks
DNA, RNA and genetic information
Base pairing helps explain how DNA is copied, while different kinds of RNA take part in protein synthesis. One example connects chromatin in a cell with molecular structure and the steps that copy its information.
Reference age · UK/US 15+ · East Asia 15+Open model
Mitosis & meiosis
How are chromosomes shared between new cells? Counting the sets at each stage distinguishes mitosis from meiosis.
Reference age · UK/US 15+ · East Asia 15+Open model
Liver & gallbladder
Bile is made in the liver, stored in the gallbladder and released into the intestine to help digest fat. Ducts connect these places.
Reference age · UK/US 14+ · East Asia 14+Open model
Heart
How do the heart’s four chambers and valves keep blood moving through the lungs and the rest of the body?
Reference age · UK/US 14+ · East Asia 14+Open model
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