Defense, Disease & Homeostasis — Drills · Grade 10 Science
Chapter: Body Systems, Signals & HomeostasisWhat these drills covers
By the end of Defense, Disease & Homeostasis you should be able to:
- I can compare broad defenses with specific adaptive responses.
- I can explain immune memory using cells and molecules rather than purposeful change.
2 questions, written answer, each with a worked explanation.
Vocabulary used: pathogen, antigen, immune memory.
Problem 1
What can a hypothetical immune-response graph explain, and what can it not decide?
Answer and explanation
It can illustrate timing consistent with memory; it cannot diagnose a person or determine treatment.
Problem 2
Compare an immediate barrier defense with a memory-based response.
Answer and explanation
A barrier reduces entry broadly; a memory response depends on earlier specific recognition and persistent responsive cells.