Digestive System

Question 1

What is an enzyme?

Answer 1

Special protein that speeds up chemical reactions by providing alternative energy pathway.

Biological catalysts

Question 2

What happens in the active site?

Answer 2

Substrate can fit into a particular place on enzyme

Question 3

What are the two ways food is digested?

Answer 3

1. Mechanical digestion involves physical breakdown of food

2. Chemical digestion. Enzymes excreted and break down large molecules

Question 4

What is digestion?

Answer 4

Process by which large insoluble molecules are broken down into soluble molecules in gut of anomal

Question 5

What are three main types of enzymes?

Answer 5

Carbohydrase

Protease

Lipase

Question 6

What is a catabolic reaction

Answer 6

Break down large substrate into smaller products

Question 7

What is anabolic reaction

Answer 7

Join smaller pieces together to make larger

Question 8

What is optimum temp of enzymes

Answer 8

37 degrees

Question 9

What does denatured mean?

Answer 9

When temp too high. Enzyme no longer works

Question 10

What can affect shape of enzyme?

Answer 10

Ph levels

Question 11

What are parts of digestive system and their functions

Answer 11

Mouth and salivary glands : chops and grinds. Saliva softens food
Esophagus : muscle contract to squeeze food down
Stomach : muscles churn food. Enzymes released. Hydrochloric acid kills bacteria
Pancreas : produces three types of enzymes
Liver and gall bladder : produces bile and relases it into small intestine
Small intestines : major absorption of nutrients into blood. Villi on walls increase surface area
Large intestine : absorbs water
Rectum : where waste is stores
Anus : where waste is passed out