biology chapter 2

Question 1

name the tissues found in the stomach

Answer 1

glandular, muscular and epithelial

Question 2

what is the function of glandular tissue in the stomach

Answer 2

release digestive juices

Question 3

name the acid found in the stomach

Answer 3

hydrochloric

Question 4

what is an enzyme

Answer 4

a biological catalyst

Question 5

what do enzymes do in our digestive system

Answer 5

speed up the breakdown of our food

Question 6

name the three main enzymes

Answer 6

amylase protease lipase

Question 7

what enzyme is found in saliva

Answer 7

amylase

Question 8

what type of food does amylase break down

Answer 8

starch

Question 9

what type of food do lipase break down

Answer 9

fats/lipids

Question 10

what type of food do protease break down

Answer 10

proteins

Question 11

what is starch broken down into

Answer 11

glucose

Question 12

what are fats broken down into

Answer 12

fatty acids and glycerol

Question 13

what are proteins broken down into

Answer 13

amino acids

Question 14

what enzyme is only released in the stomach

Answer 14

protease

Question 15

what enzymes are released by the pancreas

Answer 15

protease, amylase and lipase

Question 16

which part of the digestive system is the location for the digestion and absorption of food

Answer 16

small intestine

Question 17

what is the name of the theory used to explain enzyme action

Answer 17

lock and key theory

Question 18

where is bile stored

Answer 18

gall bladder

Question 19

what are the two functions of bile

Answer 19

emulsify fats and provide alkaline conditions in the small intestine

Question 20

name the chemical used to test for simple sugars

Answer 20

benedicts

Question 21

what colour does benedict’s solution turn in the presence of sugars

Answer 21

from blue to orange/red

Question 22

name the chemical used to test for starch

Answer 22

iodine

Question 23

what colour does iodine turn in the presence of starch

Answer 23

from brown to black/blue

Question 24

name the chemical used in the test for proteins

Answer 24

bieuret

Question 25

what colour does bieurets solution turn in the presence of proteins

Answer 25

from blue to purple

Question 26

what two factors influence enzyme activity

Answer 26

temperature and pH

Question 27

what chemical, important in digestion, does the liver produce

Answer 27

bile