IB Biology SL D3.3.1 Homeostasis Definition Questions

Define homeostasis as maintaining a stable internal environment within narrow limits, including blood pH, water balance and glucose concentration.

Exam points

Define homeostasis as maintaining a stable internal environment within narrow limits.
Identify blood pH, water balance and blood glucose concentration as variables controlled by homeostasis.

Learn this topic

Study D3.3.1—Homeostasis definition conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

[Maximum number: 4]

Outline what is meant by homeostasis.

a. maintaining (stable) internal environment/conditions;
b. within (narrow) limits;
c. example (e.g. body temperature / blood pH / blood glucose / water / $\mathrm{CO}_{2}$ concentration);
d. levels of these variables are monitored (internally);
e. negative feedback mechanisms;
f. involves hormonal / nervous control;

All question bank results loaded

Learn this topic

IB Biology SL D3.3.1 Homeostasis Definition Questions question 1