B3 - Biological molecules

Question 1

Carbs are made up of elements

Answer 1

Carbon hydrogen oxygen CHO

Question 2

Carbon hydrogen oxygen CHO are elements of

Answer 2

carbohydrates and lipids

Question 3

carbs are used for

Answer 3

structural support and a store of energy

Question 4

structural support and a store of energy are done by

Answer 4

carbohydrates

Question 5

Protein is made up of elements

Answer 5

Carbon hydrogen oxygen nitrogen sulphur CHONS

Question 6

Carbon hydrogen oxygen nitrogen sulphur CHONS are elements of

Answer 6

protein

Question 7

Protein is used for

Answer 7

structural support and important roles of chemical reactions in living organisms

Question 8

structural support and important roles of chemical reactions in living organisms are done by

Answer 8

proteins

Question 9

Lipids are made up of elements

Answer 9

Carbon hydrogen oxygen CHO

Question 10

Lipids are

Answer 10

fats and oils

Question 11

Lipids are used to

Answer 11

make up the cell membrane and also for a store of energy

Question 12

Proteins are made up of units called

Answer 12

amino acids

Question 13

amino acids are

Answer 13

units that make up protein

Question 14

Enzymes and antibodies are

Answer 14

two types of proteins that have active sites and are a specific so the protein functions properly

Question 15

Proteins can be split into

Answer 15

enzymes and antibodies

Question 16

lipids are made up of two units called

Answer 16

fatty acids and molecules called glycerol

Question 17

fatty acids and glycerol are

Answer 17

lipids

Question 18

What are the 4 major biological macromolecules

Answer 18

proteins lipids carbs and nucleic acids

Question 19

glucose is a

Answer 19

small carbohydrate

Question 20

cellulose (substance that gives structure to plant cell wall) is made up of

Answer 20

glucose

Question 21

starch is

Answer 21

a store of energy in plants

Question 22

glycogen is

Answer 22

a store of energy in animals

Question 23

starch and glycogen are both made up of

Answer 23

glucose

Question 24

Reagants can be used for

Answer 24

presence of various food substances

Question 25

steps to test for food substances

Answer 25

first step: grind up food second step: add distilled water to dissolve the food third step: add the reagant to test for the food

Question 26

what reagant is used for sugar

Answer 26

benedicts reagant

Question 27

benedicts reagant is used to test for

Answer 27

sugar

Question 28

steps to test for sugar and what to see

Answer 28

add benedicts reagant and heat for about two minutes and it will turn green yellow or red depending on the concetration of sugar

Question 29

solution used to test for proteins

Answer 29

biurets solution

Question 30

biurets solution is used to test for

Answer 30

proteins

Question 31

what color will biurets solution turn in presence of protein

Answer 31

mauve or purple

Question 32

what color does biurets turn when there is no protein

Answer 32

blue

Question 33

what color is benedicts reagant without sugar

Answer 33

aqua blue

Question 34

what solution is used to test for starch

Answer 34

iodine solution

Question 35

what color is iodine in presence of starch

Answer 35

blue/black

Question 36

what is color of iodine when there is no starch

Answer 36

reddish/orange

Question 37

what does iodine solution test for

Answer 37

starch

Question 38

how do you test for lipids

Answer 38

add ethanol and water and shake

Question 39

how do you know when ethanol is present

Answer 39

white emulsion (cloudy liquid) will form

Question 40

How to test for vitamin C

Answer 40

add DCPIP solution drop by drop

Question 41

What color will change when DCPIP is added to substance with vitamin C

Answer 41

blue to clear

Question 42

water is a

Answer 42

very important solvent in living organisms

Question 43

water can be used to

Answer 43

transport substances and chemical reactions can take place

Question 44

blood is

Answer 44

mostly made up of water with many substances (like food particles) dissolved in it to be transported around the body

Question 45

waste products like excess salt are

Answer 45

dissolved in urine

Question 46

what substance is dissolved in urine

Answer 46

salt

Question 47

digestive enzymes like proteins that break large food molecules only work when

Answer 47

dissolved in water

Question 48

what needs to be dissolved in water to work

Answer 48

digestive enzymes