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What occurs when a peptide bond forms between two amino acids?

A. Oxygen is released.B. Water is released.C. Oxygen is added.D. Water is added.

Answer: B

What does DNA stand for?Answer: Deoxyribonucleic acid

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This element is capable of forming long chains almost limitless in length.A.NitrogenB.OxygenC.PhosphorusD.Carbon

Answer: D

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A carbon based compounds are known as:A.Inorganic compoundsB.Organic CompoundsC.SubstratesD.Enzymes

Answer: B

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Fertilizers containing radioactive nitrogen compounds are used in growing experimental plants. In which molecules would these compounds be detected first?

A. SugarB. StarchC. ProteinsD. Fats

Answer: C

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One of the carbon compounds found in a cell has twice as many hydrogen atoms as oxygen atoms. This compound most likely belongs to the group of substances known as:

A. Nucleic AcidsB. LipidsC. ProteinsD. Carbohydrates

Answer: D

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The compound represented by this structural formula is a(n):A. Amino AcidB. LipidC. Fatty AcidD. Monosaccharide

Answer: D

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Which are the four most abundant elements in living cells?

A. Carbon, oxygen, nitrogen, sulfurB. Carbon, oxygen, hydrogen,

nitrogenC. Carbon, oxygen, sulfur,

phosphorusD. Carbon, sulfur, hydrogen,

magnesium Answer: B

Starches & sugars are examples of what?

Answer: Carbohydrates

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Names of sugars usually end in:A.OseB.AseC.Named after the reaction they

catalyzeD.Acid

Answer: A

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The smallest units of sugars are called:A.Amino acidsB.MonosaccharideC.StarchesD.Polypeptides

Answer: B

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This type of compound has a hydrogen to oxygen ration much greater than 2:1. A.CarbohydrateB.LipidC.ProteinD.Nucleic Acid

Answer: B

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What is a polymer?A.What the enzyme and

substrate form. B.The reaction that creates

disaccharides.C.A type of protein.D.Long chain of repeating units.

Answer: D

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Steriods, which are chemical messengers are what type of organic compound? A.CarbohydrateB.LipidC.ProteinD.Nucleic Acid

Answer: B

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Which of the following is not part of a nucleotide?A.Phosphate groupB.Nitrogenous baseC.Polypeptide bondD.5 Carbon sugar

Answer: C

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One gram of fat stores how much more energy than one gram of carbohydrates?A.10xB.100xC.2xD.4x

Answer: C

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When one of the fatty acids contain one double it is considered:A.SaturatedB.UnsaturatedC.PolyunsaturatedD.Amino Acid

Answer: B

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When monomers join together, what do they form? A.Amino acidsB.PolymersC.DNAD.Enzymes

Answer: B

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This molecule combines with 3 fatty acids to make a lipid:A.Amino AcidB.NucleotideC.GlycogenD.Glycerol

Answer: D

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The location where the substrate binds to an enzyme is known as:A.Active siteB.Chemical reactionC.NucleotideD.Dehydration synthesis

Answer: A

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Proteins contain this element in addition to carbon, hydrogen, and oxygen. A.PhosphorusB.SodiumC.NitrogenD.Helium

Answer: C

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Living things use this as their main source of energy:A.LipidsB.CarbohydratesC.Nucleic AcidsD.Proteins

Answer: B

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Give one example of a monosaccharide:

Answer: glucose, galactose, fructose

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What does a catalyst do?A.Forms long chains of

molecules.B.Speeds up a chemical

reaction.C.Breaks down molecules into

smaller pieces. D.Makes amino acids.

Answer: B 25

What is the reaction that helps make long chains of compounds?A.Dehydration synthesisB.Enzyme substrate complexC.HydrolysisD.Catalyst

Answer: A

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Proteins are composed of smaller units known as:A.NucleotidesB.Amino acidsC.EnzymesD.Monosaccharides

Answer: B

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How many amino acids do living organisms use to synthesize their proteins?A.12B.2C.10D.20

Answer: D

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Which of the following is an example of a monosaccharide?A.MaltoseB.ValineC.DNAD.Glucose

Answer: D

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What binds to an enzyme?A.LipidB.ProteinC.SubstrateD.Sugar

Answer: C

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List the three different types of lipids.

Answer: Fats, oils, waxes.

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What is this? What molecule is the arrow pointing to?

Answer: Cell Membrane, Lipid

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