Chapter 4

Question 1

What is the % of water in our bodies?

Answer 1

62

Question 2

How much % of fat is in our bodies?

Answer 2

16

Question 2

How much % of protein is in our bodies?

Answer 2

16

Question 3

How much % of carbohydrates is in our bodies?

Answer 3

1

Question 4

What are the remaining 6% in our bodies?

Answer 4

calcium & other elements,[pottasium,sodium]

Question 5

What is carbohydrates?

Answer 5

substances that include sugars,starch & cellulose

Question 6

Name one type of sugar?

Answer 6

glucose

Question 6

what does carbohydrates contain?

Answer 6

carbon,hydrogen,oxygen

Question 7

What are the simplest types of carbohydrates?

Answer 7

sugars

Question 8

what are glucose’s atoms arranged to from?

Answer 8

a hexagon shape

Question 8

What are the atoms that a glucose molecules is made of?

Answer 8

6 carbon atoms
12 hydrogen atoms
6 oxygen atoms

Question 8

What is glucose?

Answer 8

sugar that is used in respiration to release energy

Question 9

Where does glucose dissolve in?

Answer 9

blood plasma,which delivers it to every cell

Question 9

What does cells need for energy?

Answer 9

glucose

Question 10

How does glucose molecules form larger molecules?

Answer 10

link chains together

Question 11

What are the large molecules formed in animals called?

Answer 11

glycogen

Question 12

What is glycogen?

Answer 12

a carbohydrate that is used as an energy store in animal cells

Question 13

What does the liver help with?

Answer 13

keep the concentration of glucose in the blood constant

Question 14

What happens if there are too much glucose in the blood?

Answer 14

the liver links glucose moecules together to make glycogen

Question 15

Where is glycogen stored?

Answer 15

in the liver cells

Question 16

what are starch?

Answer 16

carbohydrates that is used as an energy store in plants

Question 17

what is cellulose used for in plants?

Answer 17

making plant cell walls

Question 18

What solution can you use to detect starch?

Answer 18

iodine solution

Question 19

what color does if change to if starch is present in a iodine solution?

Answer 19

brown to blue-black

Question 20

What solution is used to detect sugars?

Answer 20

benedicts solution

Question 21

What color does it change to if sugars are present in a benedicts solution?

Answer 21

blue to orange-red when heated with reducing sugars

Question 22

what is one thing you need to know about the benedicts solution?

Answer 22

the blue solution becomes yellow/green before turning orange-red

Question 23

What are fats & oils known as?

Answer 23

lipids

Question 24

What are fats?

Answer 24

lipids that are solid at room temperature

Question 25

What are oils?

Answer 25

lipids that are a liquid at room temperature

Question 26

What are the 3 elements fats & oils contain?

Answer 26

carbon hydrogen oxygen

Question 27

What are the 2 kinds of smaller molecules,fat molecules are made of?

Answer 27

glycerol fatty acids

Question 28

What are fats important for?

Answer 28

making cell membranes

Question 29

what are fats also used for?

Answer 29

energy stores

Question 30

What does mammals often have?

Answer 30

layer of cells containing fat droplets beneath the skin

Question 31

What does fats & oils not do?

Answer 31

dissolve in water

Question 32

What does fats & oils dissolve in?

Answer 32

ethanol

Question 33

what is a emulsion?

Answer 33

a liquid containing 2 substances that do not fully mix

Question 34

what are the 4 elements protein molecules contain?

Answer 34

carbon hydrogen oxygen nitrogen

Question 35

What is protein molecules made of?

Answer 35

long chain of smaller molecules called amino acids

Question 36

What are antibodies?

Answer 36

help protect the body against pathogens

Question 37

What is the protein called that hair & fingernails are made from?

Answer 37

keratin

Question 38

What solution can be used to test for proteins?

Answer 38

biurent reagent solution

Question 39

What color does the solution change if proteins are present?

Answer 39

blue to violet

Question 40

What are proteins?

Answer 40

a molecules made up of amino acids

Question 41

What are proteins needed for?

Answer 41

needed for the body to function properly

Question 42

what are pathogens?

Answer 42

microorganisms that causes diseases

Question 43

what does DCPIP mean?

Answer 43

a purple liquid that becomes colorless when mixed with vitamin C