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1 | |
Which of the following statements is/are true? |
| | A) | All carbon atom bonding sites are at equal distances from one another. |
| | B) | Organic compounds may be natural or synthetic. |
| | C) | Some atoms may be bonded to another atom more than once. |
| | D) | All of the above. |
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2 | |
Which series of atoms would most commonly be found in an organic molecule? |
| | A) | Carbon, hydrogen, oxygen, nitrogen |
| | B) | Hydrogen, oxygen, nitrogen, sulfur |
| | C) | Carbon, phosphorus, sodium, oxygen |
| | D) | Carbon, hydrogen, nitrogen, sodium |
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3 | |
Molecules that have the same empirical formula but different structural formulas are called |
| | A) | Isotopes. |
| | B) | Isomers. |
| | C) | Isobars. |
| | D) | None of the above. |
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4 | |
Specific combinations of atoms attached to the carbon skeleton are called |
| | A) | Enantomers. |
| | B) | Funtional groups. |
| | C) | Carbonyl groups. |
| | D) | Carboxylic groups. |
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5 | |
The empirical formula for a pentose would be |
| | A) | C6H12O6 |
| | B) | C6H6O12 |
| | C) | C5H10O5 |
| | D) | C5H12O5 |
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6 | |
In a dehydration synthesis reaction |
| | A) | Two molecules are joined by the addition of a water molecule. |
| | B) | Two molecules are joined as a water molecule is removed. |
| | C) | Two molecules are separated and a water molecule is added to each one. |
| | D) | Two molecules are separated as a water molecule is removed from the complex. |
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7 | |
Which of the following series of sugars is made up entirely of complex carbohydrates? |
| | A) | Starch, glycogen, cellulose |
| | B) | Starch, sucrose, lactose |
| | C) | Glycogen, glucose, galactose |
| | D) | Cellulose, glucose, fructose |
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8 | |
A triglyceride is make up of |
| | A) | One glycerol and three fatty acids. |
| | B) | Three glycerols and one fatty acid. |
| | C) | One glycerol and one fatty acid. |
| | D) | Three glycerols and three fatty acids. |
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9 | |
A saturated fatty acid will have __________ double bonds between various carbon atoms. |
| | A) | Zero |
| | B) | One |
| | C) | Two |
| | D) | Three or more |
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10 | |
The chief characteristic of the steroid molecule is the |
| | A) | Phospholipid side-chains. |
| | B) | Double carbon atoms on both sides. |
| | C) | Interlocking carbon rings. |
| | D) | Open-ended ring structures. |
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11 | |
Which statement(s) about cholesterol is/are true? |
| | A) | The human body manufactures some cholesterol. |
| | B) | Cholesterol is necessary for the production of steroids and vitamin D. |
| | C) | Cholesterol is found in the animal cell membrane as well as in the bile (produced by the liver). |
| | D) | All of the above. |
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12 | |
Proteins are made up of __________ that are joined together by __________. |
| | A) | Amino acids / peptide bonds |
| | B) | Amino acids / polypeptide chains |
| | C) | Amino groups / "R-groups" |
| | D) | Carboxylic groups / peptide bonds |
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13 | |
The way an amino acid chain folds over on itself is called its __________ structure. |
| | A) | Primary |
| | B) | Secondary |
| | C) | Tertiary |
| | D) | Quaternary |
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14 | |
If the primary function of a protein is to maintain the shape of the cell, that protein is known as a(n) __________ protein. |
| | A) | Regulatory |
| | B) | Structural |
| | C) | Denatured |
| | D) | Endotropic |
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15 | |
Which three molecules are bonded together to form a nucleotide? |
| | A) | Phosphate, sugar, protein |
| | B) | Sugar, nitrogen base, carbohydrate |
| | C) | Phosphate, sugar, nitrogen base |
| | D) | Liposaccharide, phosphate, nitrogen base |
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16 | |
Nucleotides are the functional monomers of |
| | A) | DNA. |
| | B) | RNA. |
| | C) | Energy molecules such as ATP. |
| | D) | All of the above. |
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17 | |
How many atoms of hydrogen are able to bond with one atom of carbon? |
| | A) | only one |
| | B) | two atoms of hydrogen |
| | C) | three hydrogen atoms |
| | D) | four atoms of hydrogen |
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18 | |
An atom of nitrogen has a specific number of bondable electrons based on: |
| | A) | their placement in orbitals. |
| | B) | the number of neutrons in the nucleus. |
| | C) | the size of the molecule. |
| | D) | atomic mass of the atom. |
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19 | |
Which of the following is organic? |
| | A) | sulfuric acid |
| | B) | copper sulfate |
| | C) | saltwater solution |
| | D) | lipid |
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20 | |
Methyl, alcohol, and amino are all examples: |
| | A) | functional groups. |
| | B) | carbon skeletons. |
| | C) | side chains of polysaccharides. |
| | D) | places where hydrolysis can occur. |
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21 | |
Q:- COOH is a functional group known as: |
| | A) | phosphate. |
| | B) | carbonyl group. |
| | C) | carboxylic acid group. |
| | D) | amino. |
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22 | |
Hydrolysis forms: |
| | A) | small molecules from large ones. |
| | B) | water as a waste product. |
| | C) | rearranged molecules of the same size. |
| | D) | condensed water molecules. |
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23 | |
An enzyme's function is to: |
| | A) | be a primary energy source. |
| | B) | act as an organic catalyst. |
| | C) | store energy for long term use. |
| | D) | form high energy bonds. |
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24 | |
Glucose (C6H12O6), galactose (C6H12O6), and fructose (C6H12O6) are |
| | A) | the building blocks of complex carbohydrates. |
| | B) | isomers. |
| | C) | hexose sugars. |
| | D) | all of the above. |
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25 | |
Which one of the following is NOT a lipid? |
| | A) | neutral fat |
| | B) | phospholipid |
| | C) | polypeptide |
| | D) | testosterone |
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26 | |
Which of the following is NOT a function of neutral fat? |
| | A) | insulation |
| | B) | shock absorption |
| | C) | energy storage |
| | D) | regulate rates of chemical reactions |
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27 | |
Which is the monomer for a nucleic acid? |
| | A) | amino acid |
| | B) | nucleotide |
| | C) | fatty acid |
| | D) | monosaccharide |
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28 | |
Which of the following is a polymer? |
| | A) | starch |
| | B) | protein |
| | C) | DNA |
| | D) | all of the above |
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29 | |
C12H22O11 + H2O → C6H12O6 + C6H12O6 The reaction above is an example of |
| | A) | dehydration synthesis. |
| | B) | the synthesis of a fat molecule. |
| | C) | hydrolysis. |
| | D) | the synthesis of a disaccharide. |
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30 | |
Peptide bonds |
| | A) | result from dehydration synthesis reactions. |
| | B) | form between amino acids. |
| | C) | occur when a carboxylic acid group reacts with an amino group. |
| | D) | all of the above. |
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31 | |
Which association is correct? |
| | A) | Nucleic Acid:RNA Protein:enzymes Lipid:insulin Carbohydrate:glucose |
| | B) | Nucleic Acid:DNA Protein:insulin Lipid:testosterone Carbohydrate:cellulose |
| | C) | Nucleic Acid:Enzymes Protein:insulin Lipid:testosterone Carbohydrate:glucose |
| | D) | Nucleic Acid:RNA Protein:enzymes Lipid:cellulose Carbohydrate:glycerol |
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