1. Explain why organic molecules (rather than inorganic molecules) are the building blocks of life.
Organic molecules have enough variety

2. Explain why there is such a wide variety of organic compounds.
Because organic compounds contain carbon
C can bond to many other atoms
C can bond to itself

3. Identify this organic compound and state its chemical formula.
Glucose
C6H12O6

4. State whether glucose is a monomer or a polymer, and defend your answer.
Atoms joined together
Small
NOT monomers joined together

5. Explain how A becomes B.
Polymerization A B

6. Identify the four organic compounds found in living things.
Lipid
Nucleic Acid
Fat
Cell
Protein
Muscle
Carbohydrate
Blood

7. Identify the four organic compounds found in living things.
Protein
Nucleic Acid
Chlorophyll
Cell
Lipid
Oil
Carbohydrate
Wood

8. State whether or not the molecule below is a carbohydrate, and defend your answer.
NOT a carbohydrate
C, H, O atoms are not in a 1:2:1 ratio

9. State the function of carbohydrates in ALL living things.
Main source of energy
Eating
Photosynthesis

10. By breaking the bonds between atoms
Explain how living things get energy from carbohydrates.
By breaking the bonds between atoms
Energy

11. State the second function of carbohydrates (plants only).
Build structure
Basically, carbohydrates have two functions. The first, and most important function, is energy. Living things use carbohydrates as their main source of energy. Right now, your body is breaking down the carbohydrates you ate for breakfast/lunch, releasing the energy that was holding the molecule together and using this energy to carry out life proccesses. The second function of carbohydrates, which is found mostly in plants, is structure. Plants (and some animals) use carbohydrates to build structures, such as stems, leaves and bark. BARK DEMO. This bark is made from a type of carbohydrate called cellulose. The stringy stuff in celery is also cellulose. Cellulose is the principal component of wood and paper. Right now, you are writing on cellulose, a carbohydrate.

12. Identify B as a monosaccharide or a polysaccharide, and defend your answer.
Many sugars B

13. Explain how the carbohydrates below are similar.
Both polysaccharides
Both made from glucose
Starch
Cellulose

14. Explain how plants use starch, and give a real-life example.
Store extra glucose
Potato

15. Explain how plants use cellulose, and give a real-life example.
Build structure
Wood

16. ATOMS MONOSACCHARIDE POLYSACCHARIDE GLUCOSE STARCH
Identify the monosaccharide and polysaccharide shown in the diagram below. H C C O H C H O C O O C H H H C O
ATOMS
MONOSACCHARIDE
POLYSACCHARIDE
GLUCOSE
STARCH

17. Identify the organic compound below, and defend your answer.
Lipid
Mostly C and H atoms

18. Hibernating bear (fat)
State the main function of lipids in living things.
Storing energy
Hibernating bear (fat)
Coconut (oil)

19. Explain why lipid molecules are good at storing energy.
Lots of bonds

20. Explain what it means to say that lipids are “not soluble.”
Don’t dissolve in water

21. Explain how living things make use of the fact that lipids are not soluble.
They use lipids to form waterproof coverings
Duck feathers
Waxy leaves
Steroids

22. State the third function of lipids in living things.
Forms cell membranes

23. Explain how lipids are different from carbohydrates in terms of their structure.
Lipids have no monomers or polymers
Lipids
Carbohydrates