Biological Molecules

Question 1

What are carbohydrates made of?

Answer 1

Carbon, Oxygen and Hydrogen

Question 2

What is glucose stored as?

Answer 2

Glycogen, Starch and Cellulose (a polysaccharide)

Question 3

What is maltose?

Answer 3

When 2 glucose molecules join together maltose is formed (a disaccharide)

Question 4

What are fats composed of?

Answer 4

Carbon, Oxygen and Hydrogen

Question 5

What are fats made of?

Answer 5

Most of them are made of triglycerides, and the basic unit is 1 glycerol molecule chemically bonded to 3 fatty acid chains

Question 6

What are lipids divided in?

Answer 6

Fats and oils

Question 7

What are proteins composed of?

Answer 7

Carbon, Oxygen, Hydrogen, Nitrogen and sometimes Sulphur

Question 8

What are proteins made of?

Answer 8

Amino Acids ( about 20 types)

Question 9

What are amino acids stored as?

Answer 9

Peptide, proteins

Question 10

Test for glucose

Answer 10

Benedict’s solution, boil it, a positive result changes from blue to orangy-red

Question 11

Test for starch

Answer 11

Iodine solution, from red to blue-black

Question 12

Test for protein

Answer 12

Biuret Solution, from blue to purple

Question 13

Test for lipids

Answer 13

Ethanol, from clear to cloudy white

Question 14

Test for vitamin C

Answer 14

DCPIP solution, from blue-purple to colourless

Question 15

What is DNA?

Answer 15

the molecule that contains the instructions for growth and development of all organisms

Question 16

What is the shape of DNA?

Answer 16

Double helix

Question 17

What are the individual units of DNA called?

Answer 17

Nucleotides

Question 18

How do the four bases pair up?

Answer 18

A and T and G and C