front 1 Which of the following is a particle found in the nucleus of an atom and that has no electrical charge? | back 1 neutron |
front 2 Matter composed of a single type of atom is know as an ? | back 2 element |
front 3 A stable atom has _________ in its valence shell. | back 3 8 electrons |
front 4 Which parts of the atoms interact in a chemical reaction? | back 4 electrons |
front 5 The outer ring in Figure 2-1 represents | back 5 an electron shell |
front 6 The valence of an atom represents its? | back 6 ability to interact with other atoms |
front 7 The type of bond produced when atoms share electrons equally is | back 7 a nonpolar covalent bond |
front 8 The type of bond produced when atoms with somewhat different electronegativities share electrons is ____ | back 8 a polar covalent bond |
front 9 Which of the following types of chemical bonds do carbon atoms generally NOT form? | back 9 neither ionic nor hydrogen bonds |
front 10 Unstable isotopes can be useful | back 10 in medical diagnosis |
front 11 Which of the following is an INCORRECT pairing? | back 11 Hydrolysis; hydrogen bonds |
front 12 Compounds that readily dissociate in water are | back 12 either polar or ionic |
front 13 Which of the following is a property of water? | back 13 it has a high capacity for heat |
front 14 An acid dissociates in water to release? | back 14 both anions and hydrogen ions |
front 15 The reverse of a dehydration synthesis reaction is an ____ reaction. | back 15 Hydrolytic |
front 16 A hydroxyl _____ acts as a base. | back 16 Anion |
front 17 Which of the following is NOT a characteristic of saturated fats? | back 17 They contain at least one double bond. |
front 18 Which of the following is NOT a characteristic of phospholipids? | back 18 they contain fatty acids that associate with water |
front 19 Organisms use carbohydrates in all of the following ways EXCEPT | back 19 to keep membranes flexible at low temperatures |
front 20 Nucleic acids, proteins, and complex carbohydrates are all produced by? | back 20 dehydration sysnthesis |
front 21 Which of the following is an example of polysaccharide? | back 21 Glycogen |
front 22 Which of the following statements about proteins is FALSE? | back 22 Their primary function is energy storage |
front 23 All of the following are components of an amino acid EXCEPT | back 23 pentose group |
front 24 Which of the following is found in nucleic acids? | back 24 purines |
front 25 Hydrogen Bonds are found in all of the following EXCEPT | back 25 between phosphates in ATP |
front 26 Tertiary and quaternary structures of proteins involves _____ bonds. | back 26 ionic, hydrogen, polar, and nonpolar covalent |
front 27 Which of the following are examples of pyrimidines? | back 27 Cytosine & thymine |
front 28 All of the following bases are found in RNA molecules EXCEPT | back 28 Thymine |
front 29 The "backbone" of the DNA molecule is composed of | back 29 alternation phosphates and pentoses |
front 30 Which of the following would NOT normally be found as a component of a cells nucleic acids? | back 30 uracil deoxyribonucleotides |
front 31 All of the following are associated with ATP molecules EXCEPT | back 31 a long term energy supply |
front 32 Which of the following statements concerning nucleic acids is FALSE? | back 32 the nucleic acid polymer is composed of peptide bonds |
front 33 Which of the following is an INCORRECT pairing? | back 33 secondary structure; disulfide bridges |
front 34 Proteins contain both acidic and basic R groups, and can therefore function as | back 34 Buffers |
front 35 A ____ is a compound that dissolves into anions and cations in water. | back 35 Salt |
front 36 Plant cell walls are composed of ______ held together by ________ . | back 36 polysaccharids; hydrogen bonds |
front 37 A ______ is an arrangement of atoms found in a variety of macromolecules. | back 37 Functional group |
front 38 Decomposition reactions are commonly _____ reactions. | back 38 Exothermic |
front 39 Lipids found in the membranes of all eukaryotic cells are _____ . | back 39 phospholipids |
front 40 A protein is a _________ of amino acids. | back 40 polymer |
front 41 DNA is composed of repeating units of sugars, phosphates, and nucleic acids. This is an example of a | back 41 polymer |
front 42 A polymer composed of a simple sugar is an ____ | back 42 Starch |
front 43 Anna is conducting an experiment using pH indicator that is red at low pH, green at neutral pH and purple at high pH. She starts with a green solution. When she adds compound X to her solution it turns purple. Then she adds compound Z to the solution and it turns green. She adds more Z, the solution remains green. These observations suggest X is ____ & Z is ______ . | back 43 a base; a buffer |
front 44 An amine group is removed from an amino acid and bounded to a second compound to form a different amino acid. No other molecules are uses or produced. What type of reaction is likely to be involved? | back 44 The answer cannot be determined for the available information |
front 45 Adenosine triphosphate (ATP) is a | back 45 monomer |
front 46 Amylose is an ______ carbohydrate | back 46 polymer |
front 47 Using a microscope you observe an amoeba moving toward a food source. This is an example of | back 47 Responsiveness |
front 48 Which of the following is NOT a component of bacterial flagella? | back 48 Tubulin |
front 49 Which of the following statements concerning the characteristics of life is FALSE? | back 49 Reproduction is defined as an increase in the size of an organism |
front 50 Protein synthesis occurs in the ____ ? | back 50 ribosome |
front 51 Which of the following bacterial cell structures plays an important role in the creation of biofilms? | back 51 both fimbriae and glycocalyces |
front 52 Short hairlike structures used only by eukaryotic cells for movement are called ? | back 52 Cillia |
front 53 A bacterial cell moving toward light would be an example of | back 53 positive phototaxis |
front 54 Which of the following statements concerning prokaryotic flagella is TRUE? | back 54 Prokaryotic flagella are anchored to the cell wall by means of the basal body |
front 55 Which of the following statements concerning pili is FALSE? | back 55 Pili are long than fimbriae and flagella |
front 56 Which of the following may be a component of bacterial cell walls? | back 56 both lipoteichoic and mycolic acids |
front 57 Bacterial cell walls that are resistant to drying contain: | back 57 Waxes |
front 58 Lipid A is a component of | back 58 lipopolysaccharids |
front 59 Bacteria of the genus Mycoplasma lack cell walls. What sort of environment do they require for survival? | back 59 Isotonic |
front 60 Lipid soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes? | back 60 diffusion |
front 61 ATP is expended in which of the following processes? | back 61 both active transport and group translocation |
front 62 Which of the following statements concerning osmosis is FALSE? | back 62 during osmosis, water crosses to the side of the membrane with a lower solute concentration |
front 63 Endospores survive a variety of harsh conditions in part because of the presence of | back 63 dipicolinic acid |
front 64 The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT | back 64 transfer of genetic material between cells |
front 65 Which of the following is unique to archaea? | back 65 Hami |
front 66 The cells illustrated in Figure 3-1 are in an _____ environment | back 66 hypotonic |
front 67 Which of the following statements concerning endocytosis and exocytosis is TRUE? | back 67 Endocytosis produces a structure called a food vesicle |
front 68 A lipid found in prokaryotes but NOT in eukaryotes is ____ | back 68 Steriod |
front 69 Which the following statements concerning centrioles is FALSE? | back 69 Centrioles are found in all organisms except prokayotes |
front 70 Which of the following is classified as a non membranous organelle of eukaryotic cells? | back 70 centriole |
front 71 Which of the following is associated with the mitochondria of a eurkaryotic cell | back 71 cristae |
front 72 Which of the following statements about the endoplasmic reticulum (ER) is correct? | back 72 The ER is a transport system within the cytoplasm |
front 73 Which of the following organelles is responsible for producing most of the ATP in a eukaryotic cell? | back 73 mitochondria |
front 74 Chloroplasts differ from mitochondria in that the former have | back 74 thylakoids |
front 75 Which of the following is paired Incorrectly? | back 75 algae; glycocalyx present |
front 76 Which of the following statements concerning the endosymbiotic theory is FALSE? | back 76 eukaryotes were formed from the union of small anaerobic cells by larger aerobic cells |
front 77 Which of the following is NOT a function of the eukaryotic cytoskeleton? | back 77 packages cellular secretions |
front 78 The accumulation of glucose 6-phosphate inside a bacterial cell via phosphorylation of glucose is an example of | back 78 group translocation |
front 79 Which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and without the use of transport proteins? | back 79 small hydrophobic molecules only |
front 80 Which of the following processes requires a carrier protein? | back 80 both facilitated diffusion and active transport |
front 81 Which of the following chemical substances contributes to the unique characteristics of acid-fast bacteria? | back 81 mycolic acid |
front 82 The cytoplasmic membranes of ______ contain phospholipids and proteins. | back 82 both bacterial and eukaryotic cells |
front 83 Membrane rafts are found in the cytoplasmic membranes of ? | back 83 eukaryotes only |
front 84 Endocytosis and exocytosis are means of transport used by | back 84 eukaryotes |
front 85 Some ____ use group translocation as a means of transport. | back 85 Bacteria |
front 86 Hopanoids are found in ____ cytoplasmic membranes. | back 86 bacterial |
front 87 The cell walls of some _____ are composed of proteins. | back 87 archaea |
front 88 Cytoplasmic membranes of ____ are composed of phospholipids | back 88 bacteria and eukaryotes |
front 89 Some members of _____ have hami. | back 89 archaea |
front 90 _____ may have pili. | back 90 Bacteria |
front 91 Cell walls composed of polysaccharide are found in | back 91 archaea and eukaryotes only |
front 92 Which of the following may have cell walls containing teichoic acids? | back 92 Gram positive bacteria only |