Lesson 3: Obtaining Energy & Removing Waste

What is the primary source of energy for most living organisms?

• Water

• Sunlight

• Oxygen

• Carbon Dioxide

What is the primary reason organisms eat?

• To gain energy and nutrients

• To sleep

• To play

• To breathe

Fill in the blank: The amount of energy in food is measured in ______.

• Joules

• Calories

• Watts

• Volts

The number one use of energy in our bodies is to ______.

• A) produce body heat

• B) regulate brain and nerve function

• C) produce movement

• D) make digestion possible

Which part of the digestive system is responsible for absorbing nutrients?

• Stomach

• Small intestine

• Liver

• Esophagus

Which organ is not part of the digestive system?

• Mouth

• Heart

• Stomach

• Large Intestine

What are nucleic acids used to make?

• Proteins

• DNA & RNA

• Carbohydrates

• Lipids

The process by which food moves from the mouth to the stomach is called ________.

• Digestion

• Peristalsis

• Absorption

• Ingestion

What is the role of the esophagus in digestion?

• It digests food

• It transports food to the stomach

• It absorbs nutrients

• It excretes waste

The overall process of breaking down food so it can be used by the body is called ______________________.

• eating

• respiration

• circulation

• digestion

Tags

NGSS.MS-LS1-7