* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Biochemistry Practice Questions
Point mutation wikipedia , lookup
Drug discovery wikipedia , lookup
Plant nutrition wikipedia , lookup
Two-hybrid screening wikipedia , lookup
Photosynthesis wikipedia , lookup
Protein–protein interaction wikipedia , lookup
Peptide synthesis wikipedia , lookup
Microbial metabolism wikipedia , lookup
Western blot wikipedia , lookup
Nucleic acid analogue wikipedia , lookup
Basal metabolic rate wikipedia , lookup
Fatty acid synthesis wikipedia , lookup
Protein structure prediction wikipedia , lookup
Genetic code wikipedia , lookup
Fatty acid metabolism wikipedia , lookup
Evolution of metal ions in biological systems wikipedia , lookup
Metalloprotein wikipedia , lookup
Amino acid synthesis wikipedia , lookup
Proteolysis wikipedia , lookup
Name: __________________ Mrs. Lambiase Organic Compounds Practice Questions 1. Which are the four most abundant elements in living cells? a. Carbon, oxygen, nitrogen, sulfur b. Carbon, oxygen, hydrogen, nitrogen c. Carbon, oxygen, sulfur, phosphorus d. Carbon, sulfur, hydrogen, magnesium 2. Which pair of compounds can be classified as inorganic? a. Nucleic acids and minerals b. Proteins and water c. Water and salts d. Nucleic acids and proteins 3. Which chemical formula represents an organic compound? a. H2O b. NaCl c. NH3 d. C6H12O6 4. The most abundant compound in cytoplasm is a. Fat b. Water c. Protein d. Carbohydrates 5. 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 acids b. Lipids c. Proteins d. Carbohydrates 6. A compound whose chemical composition is most closely related to maltose is a. Starch b. ATP c. Protein d. RNA 7. Which general formula best represents a monosaccharide? a. C2O b. C2HO c. CHO2 d. CH2O 8. Water is produced as a waste product by the process of a. Dehydration synthesis b. Protein ingestion c. Carbohydrate digestion d. Absorption of minerals 9. What are the most common building blocks of fats? a. Alcohol and carbohydrates b. Alcohol and proteins c. Glycerol and amino acids d. Glycerol and fatty acids 10.Compared to carbohydrates, the ratio of hydrogen to oxygen in lipids is a. The same b. Sometimes smaller c. Always smaller d. Always greater 11. As a class of compounds, lipids include a. Fats and oils b. Fats, carbohydrates, and proteins c. Alcohols and acids d. Sugars and starches 12.Fertilizers containing radioactive nitrogen compounds are used in growing experimental plants. In which molecules would these compounds be detected first? a. Sugar b. Starch c. Proteins d. Fats 13.Amino acids are required in the human diet principally for the synthesis of a. Proteins b. Sugars c. Starches d. Lipids 14.A sample of small, soluble, organic molecules was analyzed and found to contain the elements carbon, oxygen, hydrogen, and nitrogen. It is most likely that the molecules were a. Lipids b. Fatty acids c. Simple sugars d. Amino acids 15.The process by which amino acids are chemically joined together is called a. Pinocytosis b. Hydrolysis c. Nitrogen fixation d. Dehydration synthesis 16.Protein has a great potential for variation of structure because a. Many amino acids may combine in a number of ways b. Different types of amino acids may occur in pairs c. Fatty acids may vary d. Nucleotides may vary 17.Which substance is classified as a protein? a. Sucrose b. Glycerol c. Starch d. Hemoglobin 18.Molecules made up of long chains of repeating units are called a. Polymers b. Enzymes c. Fatty acids d. DNA 19.The formula C68H103O45N17S2 most likely represents a a. Lipid b. Polysaccharide c. Starch d. proteins 20. Which type of organic compound has molecules that include both an amino group and a carboxyl group? a. Alcohols b. Proteins c. Carbohydrates d. Lipids 21.Two side groups which are characteristic of all amino acids are a. –OH and –COOH b. –CH3 and –OH c. –NH2 and –COOH d. –NH2 and –CH2OH 22. 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 23.Enzymes influence chemical reactions in living systems by a. Providing the substrate required for the reactions to occur b. Combining with excess hydrogen to form gaseous wastes c. Affecting the rate at which the reactions occur d. Absorbing water release when polymers are formed 24. Which group of organic compounds includes the enzymes? a. Proteins b. Carbohydrates c. Sugars d. Starches 25. Any substance that is acted upon by an enzyme is called a. Coenzyme b. Vitamin c. Substrate d. Polypepetide 26. An enzyme that hydrolyzes starch usually will not act upon sucrose. This fact is an indication that enzymes are a. b. c. d. specific synthetic hydrolytic catalytic Base your answers to questions 27 through 29 on the diagram below of an enzyme-controlled process which occurs in humans. 27. The process represented by the diagram is known as a. photosynthesis b. hydrolysis c. dehydration synthesis d. aerobic respiration 28. The enzyme is represented by figure a. b. c. d. A B C D 29. If figure B represents a disaccharide, figure D must represent a molecule of a. A polysaccharide b. A fatty acid c. An amino acid d. A simple sugar 30. At what point on the graph shown below can the rate of enzyme activity be increased by increasing the concentration of substrate molecules? a. 1 b. 2 c. 3 d. 4