LIVING ENVIRONMENT REGENTS PRACTICE
Order from least complex to most complex: tissue, organism, cell, organ system, organ, organelle - Answer- organelle, cell, tissue, organ, organ system, organism What is biodiversity? - Answer- "Diversity of the life" # of different species in an ecosystem Why is biodiversity important? - Answer- 1. Increases the stability of an ecosystem 2. Increases genetic diversity 3. Discoveries in medicine/agriculture What molecule can trigger an immune response? - Answer- Antigen How does the immune system respond to a vaccine? - Answer- Prepares antibodies and memory cells What are two jobs of white blood cells? - Answer- To flag and engulf pathogens What is an immune response to a usually harmless environmental substance? - Answer- Allergy What is the removal of trees from stable ecosystems called? - Answer- Deforestation? What is the process by which stable ecosystems are built over time? - Answer- Ecological Succession Where is insulin secreted from? - Answer- Pancreas What does insulin regulate? - Answer- Blood sugar What is meiosis? - Answer- Cell division that creates gametes (sex cells) What is the function of the placenta? - Answer- Provide fetus with oxygen and nutrients, takes away waste, separates blood Where does photosynthesis occur? - Answer- Chloroplast What are
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