Movement and messages
Connect movement, sensory signals, immune response and DNA information.
Choose any question to begin.
- 1
Why do different joints allow different movements?
Can an elbow-like hinge move sideways? Compare a hinge with a ball-and-socket joint in the same direction. A blocked movement is an outcome, not a broken animation.
Checkpoint answeredOpen this discovery → - 2
How can a pair of muscles move a joint both ways?
Do muscles pull or push the bones? Compare bending with straightening. Follow the highlighted muscle and its tendon across the joint.
Checkpoint answeredOpen this discovery → - 3
How does a stimulus become information?
Does a picture travel down an eye nerve? Follow a stimulus to a receptor, then a nerve signal to processing in the brain or spinal cord.
Checkpoint answeredOpen this discovery → - 4
How do different defences work together?
Does immune memory recognize every new microbe? Compare a first encounter with a repeat of the matching feature M. The stages are a conceptual map, not an illness clock.
Checkpoint answeredOpen this discovery → - 5
How does DNA pairing help preserve information?
Which letter belongs across each DNA rung? Read across a rung: A pairs with T, and C pairs with G. The two strands run in opposite directions.
Checkpoint answeredOpen this discovery →
Each discovery includes all five reading levels. Journey progress reflects the checkpoints answered on this browser.