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Molecules may be categorized into two major groups: organic & inorganic. Please

ID: 190121 • Letter: M

Question

Molecules may be categorized into two major groups: organic & inorganic. Please match the following eight characteristics accordingly

a) inorganic

b) organic

1.- ( ) they usually contain positive and negative charged ions

2.- ( ) they always contain carbon and hydrogen

3.- ( ) usually composed by ionic type of bonds

4.- ( ) usually composed by covalent bonds

5.- ( ) always contain a small amount of atoms

6.- ( ) they may be quite long, composed of many atoms

7.- ( ) usually associated with living organisms

8.- ( ) often associated with non-living elements

14.- Which of the following is not a characteristic of carbon?

a) may form up to four different bonds

b) may bond with itself

c) commonly found in molecules formed by ionic bonds

d) because of its properties may give way to complex/long chains

MATCH the biological molecules with its apprpriate monomer

a) carbohydrate

b) lipid

c) protein

d) nucleic acid

15.- ( ) fatty acid

16.- ( ) nucleotide

17.- ( ) saccharide

18.- ( ) amino acid

19.- Which is the most abundant carbon compound found as a component of living organisms?

a) carbohydrates b) proteins c) lipids d) fats e) nucleic acids

MATCH the biological molecules with its most common function

a) carbohydrates

b) lipids

c) proteins

d) nucleic acids

20.- ( ) They carry the chemical code of life, or function as transport components

   involved in critical energy transformation in every cell

21.- ( ) The specialized shape and function of different cells depends in this type

of molecule.

22.- ( ) Serves both as a structural component and as an energy source that fuels

life’s processes.

23.- ( ) Energy storage molecule, that provides water proof covering around cell.

24.- Which of the following is a monosaccharide known as the “universal fuel”.

a) fructose b) ribose c) cellulose d) glucose e) sucrose

25.- Monosaccharide that functions as a component of DNA

a) ribose b) deoxiribose c) uracil d) glucose e) cytosine

Explanation / Answer

1. Inorganic.

2. Organic.

3. Inorganic.

4. Organic.

5. Inorganic.

6- organic.

7. Organic.

8. Inorganic.

14. C. Commonly found in molecules formed by ionic bonds.

15. B. Lipids.

16. D. Nucleotides.

17. A. Carbohydrates.

18. C. Proteins.

19. B. Proteins.

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