T1 L3 Obtaining Energy and Removing Wastes 2025

What do humans and animals get energy from?

• Water

• Air

• Food

• Sunlight

What unit is used to measure energy in food?

• Grams

• Joules

• Calories

• Liters

What is the process of breaking down food into smaller pieces called?

• Metabolism

• Absorption

• Digestion

• Circulation

Which part of the digestive system chews food?

• Small Intestine

• Stomach

• Esophagus

• Mouth

What type of digestion involves physical breakdown of food?

• Chemical digestion

• Nutritional digestion

• Mechanical digestion

• Biological digestion

What is the function of the esophagus?

• Chews food

• Absorbs nutrients

• Mixes food with saliva

• Moves food to the stomach

What does the stomach do to food?

• Moves food to the small intestine

• Carries glucose

• Mixes and breaks down food

• Absorbs water

Where does most nutrient absorption occur?

• Stomach

• Large Intestine

• Small Intestine

• Mouth

What does the large intestine primarily absorb?

• Glucose

• Water

• Vitamins

• Nutrients

What system removes waste from the body?

• Circulatory System

• Excretory System

• Digestive System

• Nervous System