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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) | functional 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 made 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 of |
| | 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 |
| | 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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| 32 | |
Proteins that help other proteins fold into their 3-D shapes are known as ______. |
| | A) | chaperone proteins |
| | B) | enzymes |
| | C) | hormones |
| | D) | origami proteins |
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