CHEMISTRY FORENSICS HONORS BIO BIOLOGY Classroom Calendar Course Info PREVIOUS YEARS 2011-2019 SCIENCE GAMES

unit_2.2_practice_test

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Name:    UNIT 2.2

Multiple Choice Identify the choice that best completes the statement or answers the question.
A B C D	1.	Which of the following is not a large biomolecule? a. carbohydrate b. ice c. lipid d. nucleic acid
A B C D	2.	Polysaccharides are a. carbohydrates. b. lipids. c. proteins. d. nucleic acids.
A B C D	3.	Which of the following is a carbohydrate? a. ATP b. steroid c. wax d. sucrose
A B C D	4.	Lipids are a. soluble in water. b. made of chains of amino acids. c. linked together with peptide bonds. d. used by the body for storing energy.
A B C D	5.	All of the following are examples of lipids except a. oil. b. starch. c. steroids. d. candle wax.
A B C D	6.	Which of the following molecules make up (compose) proteins? a. amino acids b. monosaccharides c. nucleotides d. sugars
A B C D	7.	The overall shape of a single chain of amino acids in a protein is that protein’s a. primary structure. b. secondary structure. c. tertiary structure. d. quaternary structure.
A B C D	8.	The amino group of one amino acid is linked to the carboxyl group of another amino acid in a protein. This link is a(n) a. peptide bond. b. hydrogen bond. c. ionic bond. d. polar bond.
A B C D	9.	What gives each amino acid its unique properties? a. its side group b. its amino group c. its carboxyl group d. its sequence
A B C D	10.	The two types of nucleic acids are a. RNA and ATP. b. DNA and RNA. c. DNA and ATP. d. nucleotides and ATP.
A B C D	11.	Which of the following molecules are linked together to form nucleic acids? a. amino acids b. fats c. nucleotides d. sugars
A B C D	12.	What type of molecule is ATP? a. amino acid b. fat c. nucleotide d. sugar
A B C D	13.	DNA stores a. fat. b. carbohydrates. c. energy. d. hereditary information.
A B C D	14.	The two strands of a DNA molecule are held together by a. ionic bonds. b. covalent bonds. c. hydrogen bonds. d. peptide bonds.
A B C D	15.	A covalent bond means ____________________________. a. that two atoms are sharing an electon equally b. are sharing an electon but one is more electronegative and therefore has the electron closer to it c. that one atoms stole an electron from another atom d. none of the above
A B C D	16.	The model shows water molecules interacting. The gray circles represent oxygen, the white circles represent hydrogen. What conclusion is supported by this model? a. Slight negative charges around the oxygen molecule and the slight positive charges of hydrogen atoms form a polar molecule. b. The two hydrogen atoms are both attracted to the negative oxygen atom, sharing the electrons equally, forming a nonpolar molecule. c. Strong negative charge of oxygen molecules is equally shared by the hydrogen atoms, forming polar molecules that exhibit hydrogen bonding. d. The two hydrogen atoms generate a strong positive charge that attracts and bonds with the weak negative oxygen atom that exhibit ionic bonding.
A B C D	17.	Which statement best explains the role of energy in cellular respiration? a. The cell creates energy by forming large molecules. b. The cell destroys energy by breaking down large molecules. c. The cell creates stored chemical energy by capturing solar energy. d. The cell moves stored chemical energy to different chemical bonds
A B C D	18.	The diagram shows a model of the conversion between ATP and ADP. Which statement does the model support? a. ATP and ADP do not contain energy. b. ATP contains more energy than ADP. c. ADP contains more energy than ATP d. ATP and ADP contain the same amount of energy.
A B C D	19.	ATP (adenosine triphosphate) stores energy in the bonds between its __________. a. nucleotides b. carbon atoms c. hydrogen atoms d. phosphate groups
A B C D	20.	What type of carbon-based molecule is the first to be broken down by the body's cells to provide a source of energy? a. fat b. protein c. amino acid d. carbohydrate
A B C D	21.	When fatty acids cannot pack together tightly enough to make a solid fat, they have __________. a. very little glycerol b. more polar molecules c. fewer hydrogen atoms d. no double carbon bonds
A B C D	22.	Carbon dioxide is converted into organic compounds in the __________. a. mitochondria b. the Krebs cycle c. the Calvin cycle d. the electron transport chain
A B C D	23.	Unlike other carbon-based molecules, nucleic acids are known for their __________. a. single function b. varied structures c. poor bonding ability d. unimportance in cells
A B C D	24.	What type of reaction is used to join monomers together by removing a hydrogen ion and a hydroxide ion? a. dessication b. dehydration c. claxial d. covalenagenesis
A B C D	25.	These are joined together to form carbohydrates a. amino acids b. saccharides c. nucleotides d. ATP
A B C D	26.	What is this a. amino acid b. lipid c. carbohydrate d. nucleotide
A B C D	27.	What is this a. amino acid b. lipid c. carbohydrate d. nucleotide
A B C D	28.	What is this AMINE GROUP                                        CARBOXYL GROUP a. amino acid b. lipid c. carbohydrate d. nucleotide
A B C D	29.	Which of the following are non-polar a. water b. ions c. lipids d. all of the above are non-polar
A B C D E	30.	Which of the following are nucleic acids? a. ATP b. DNA c. ribonucleic acid d. all of the above e. none of the others
A B C D E	31.	How many calories per gram do nucleic acids have? a. 2 b. 4 c. 6 d. 9 e. none of the other answers