Life Systems: Nerves, DNA, Evolution
Year 10 Science Understanding Coordinated Biological Systems Remote Learning Session
Coordinated Internal Systems
Multicellular organisms need coordination Internal systems work together Respond to environmental changes Maintain homeostasis Survival depends on system integration
The Nervous System: Command and Control
Build a Neuron
Draw and label a neuron structure Include: cell body, dendrites, axon, synapses Explain how electrical impulses travel Describe synaptic transmission Connect to real-world reflexes
DNA and Heredity: The Code of Life
DNA contains genetic instructions Genes are specific DNA sequences Heredity passes traits to offspring Chromosomes carry genetic information Genetic variation enables adaptation
Evolution by Natural Selection
{"left":"Individuals show variation in traits\nSome traits help survival and reproduction\nFavorable traits become more common","right":"Unfavorable traits become less common\nPopulations change over time\nNew species can emerge"}
Critical Thinking Challenge
How might climate change affect the nervous system adaptations of Arctic animals? Consider: temperature sensitivity, migration patterns, prey availability Think about: sensory adaptations, behavioral changes, survival strategies
Connecting the Systems
Nervous systems coordinate responses DNA provides the blueprint for development Evolution shapes both over time Ecosystems provide selective pressures All systems work together for survival