Chapter 5 - Human Nutrition

Question 1

What is nutrition?

Answer 1

process by which organisms obtain food and energy for growth, repair and maintenance of the body

Question 2

What are the processes involved in nutrition?

Answer 2

ingestion, digestion, absorption, assimilation, egestion

Question 2

What does the teeth do?

Answer 2

“cuts” and grinds the food from larger pieces into sm

Question 3

What does digestion mean?

Answer 3

Breakdown of food, breaking down large, insoluble food molecules to smaller, soluble food molecules to be absorbed into the new body by physical and chemical methods. Physical digestion involves a chemical breakdown with no help of enzymes to increase the surface area to volume ratio of the food for digestive enzymes to act on the food more efficiently. Chemical digestion is the enzymatic hydrolysis of large food molecules into small food molecules with the help of digestive enzymes.

Question 4

What enzymes are in the mouth and what does it break down?

Answer 4

Amylase, starch

Question 5

What is an enzyme?

Answer 5

Biological catalyst which alters the rate of reaction without being chemically unchanged at the end of the reaction.