Biology: Understanding Homeostasis

What is the primary goal of homeostasis in living organisms?

• To decrease energy consumption

• To increase body temperature

• To maintain a stable internal environment

• To enhance external conditions

How do ectotherms like reptiles regulate their body temperature?

• By shivering

• By sweating

• By using external heat sources

• By generating internal heat

What role do stomata play in plant homeostasis?

• They store nutrients

• They regulate water and gas exchange

• They release oxygen

• They absorb sunlight

What is a negative feedback loop?

• A process that stops all changes

• A process that amplifies changes

• A process that stabilizes conditions

• A process that only occurs in plants

Which hormone is responsible for regulating blood sugar levels?

• Thyroxine

• ADH

• Cortisol

• Insulin

What happens to the body during hypothermia?

• Body temperature rises above normal

• Body temperature drops below normal

• Cells stop functioning

• Cells produce excess heat

Why can't freshwater fish survive in saltwater?

• Their cells lose water and shrivel

• They can't find food in saltwater

• They can't breathe in saltwater

• They overheat in saltwater

What is a key advantage of organisms like tardigrades?

• They reproduce rapidly

• They are immune to diseases

• They can photosynthesize

• They can survive extreme conditions

What is the main takeaway about homeostasis from the lesson?

• It is a recent evolutionary development

• It only applies to animals

• It is a requirement for life

• It is optional for survival

What topic will be covered in the next lesson?

• Photosynthesis

• Cell cycles

• Plant growth

• Animal behavior