Digestion - What Is It?

The video explains the nutritional components of a burger and how digestion breaks it down into nutrients that can be absorbed into the blood. It covers both mechanical and chemical digestion, highlighting the role of enzymes like amylase. The video contrasts human internal digestion with external digestion in organisms like fungi and houseflies. It also discusses the time required for digestion and the significant role of gut bacteria in the process.

What are the two types of digestion that occur when you eat a burger?

• Mechanical and chemical

• Physical and biological

• Internal and external

• Simple and complex

Which enzyme in saliva helps break down starch molecules in the bun?

• Lipase

• Lactase

• Protease

• Amylase

How do fungi digest their food?

• Internally, like humans

• By secreting enzymes onto food

• By chewing and swallowing

• Through photosynthesis

Approximately how long does it take for food to pass through the stomach and small intestine?

• 24 hours

• 6-8 hours

• 2-4 hours

• 10-12 hours

What role do gut bacteria play in digestion?

• They store excess nutrients

• They absorb nutrients directly

• They help break down food and make vitamins

• They produce digestive enzymes