front 1 Life is organized in a hierarchical fashion. Which of the following
sequences correctly lists that hierarchy from least | back 1 molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem |
front 2 Which of the following best describes the atomic number of an atom? | back 2 the number of protons in the atom |
front 3 Which of the following statements about dehydration synthesis is false? | back 3 Animal digestive systems utilize this process to break down food |
front 4 A disaccharide forms when | back 4 two monosaccharides join by dehydration synthesis |
front 5 Amino acids can be distinguished from one another by | back 5 the chemical properties of their R groups. |
front 6 Mad cow disease serves as an example of how interdependent ________ and ________ are to protein | back 6 structure; function |
front 7 Which of the following is a carboxyl group? | back 7 COOH |
front 8 Which of the following statements about animal cell lipids is false ? | back 8 Many lipids function as enzymes |
front 9 Which of the following lists contains only polysaccharides? | back 9 cellulose, starch, and glycogen |
front 10 A molecule with the formula C55H110O55 is probably a/an | back 10 polysaccharide |
front 11 Glucose molecules are to starch as ________ are to proteins. | back 11 amino acids |
front 12 Lactose intolerance | back 12 does not affect the consumption of beverages made from soy or rice. |
front 13 Fatty acids are | back 13 hydrophobic |
front 14 Why did the lactose tolerance mutation in the East African herders spread so rapidly within the population? | back 14 It was a selective advantage for survival during droughts and cold winters |
front 15 Myosin is a contractile protein found in muscles that is composed of
three pairs of subunits, two heavy chains, and | back 15 primary, secondary, tertiary, and quaternary |
front 16 What is the general function of enzymes within a cell? | back 16 to speed up chemical reactions |
front 17 Lysozyme is an enzyme that breaks down bacterial cell walls and is
found in your tears, mucus, and saliva. A | back 17 yes, because both lysine and arginine are positively charged so the tertiary structure and therefore function should be simila |
front 18 Which of the following would be correctly classified as a protein? | back 18 an enzyme |
front 19 Which meal is high in fiber, low in saturated fats, and high in unsaturated fats | back 19 a bowl of spaghetti tossed with olive oil, artichokes, and broccoli |
front 20 The primary structure of a protein is | back 20 amino acid sequence |
front 21 Cows can derive nutrients from cellulose because | back 21 their intestinal tract contains cellulose-hydrolyzing microorganisms. |
front 22 Peptide bonds | back 22 link amino acids |
front 23 The development of atherosclerotic disease can result from a diet high in | back 23 saturated fats |
front 24 Many names for sugars end in the suffix | back 24 ose |
front 25 Cellulose differs from starch in that | back 25 most animals cannot break down cellulose, whereas starch is easily digested. |
front 26 Which of the following statements about the functional groups of organic compounds is false? | back 26 All functional groups include a carbon atom. |
front 27 Which of the following options correctly pairs a polymer and its monomer? | back 27 DNA, nucleotides |
front 28 Which of the following statements regarding the oxygen atom of a water molecule is true? | back 28 Oxygen is more electronegative than the hydrogen atoms. |
front 29 Clots in our blood can lead to a heart attack or stroke by blocking
blood flow. If a clot were made up of a mass of | back 29 The proteins were no longer soluble in the blood |
front 30 A solution with a pH of 7 is | back 30 neutral |
front 31 Water molecules stick to other water molecules because | back 31 hydrogen bonds form between the hydrogen atoms of one water molecule
and the oxygen atoms of other water |
front 32 In ocean acidification, dissolving CO2 gas ________ the pH of the ocean. | back 32 lowers |
front 33 Water's surface tension and heat storage capacity are accounted for by its | back 33 hydrogen bonds |
front 34 How will a lower ocean pH caused by ocean acidification affect coral reefs? | back 34 Coral reefs will grow slower because there are fewer carbonate ions available |
front 35 A nutrition facts label from a fortified cereal states that in a
single serving of cereal there is 8% of the percent daily | back 35 A half-cup of skim milk contains twice as much phosphorus as a serving of cereal. |
front 36 In the equation 2 H2 + O2 → 2 H2O, the H2 molecules are ________ and
the H2O molecules are ________ | back 36 reactants; products |
front 37 In some areas, fluoride is added during the municipal water treatment process in order to help | back 37 reduce tooth decay. |
front 38 In a water molecule, hydrogen and oxygen are held together by a ________ bond. | back 38 polar covalent |
front 39 Which of the following trace elements needed by humans is commonly added to table salt? | back 39 iodine |
front 40 The hydrogen atoms of a water molecule are bonded to the oxygen atom
by ________ bonds, whereas neighboring | back 40 polar covalent; hydrogen |
front 41 Radioactive isotopes | back 41 can be used in conjunction with PET scans to diagnose diseases |
front 42 As ice melts | back 42 hydrogen bonds are broken |
front 43 Which of the following particles are found in the nucleus of an atom? | back 43 protons and neutrons |
front 44 Medicines are often administered in pill form. In many cases, the
active ingredient of the pill (the drug) is joined to | back 44 ionic bonds; salt |
front 45 What happens to an atom if the electrons in the outer shell are altered? | back 45 The properties of the atom change |
front 46 What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons | back 46 12 |
front 47 Which of the following hypotheses would be supported if liquid water
were found on Mars and contained evidence of | back 47 the chemical evolution of life is possible |
front 48 Which of the following statements about water is false? | back 48 Ice is more dense than liquid water |
front 49 Electrons move about the nucleus of an atom in the same way that | back 49 insects fly around a bright lamp at night. |
front 50 Typically, nitrogen atoms are composed of electrons, protons, and neutrons. An isotope of nitrogen could | back 50 have more neutrons than the usual nitrogen atom. |
front 51 When full, the innermost electron shell of argon contains ________
electrons, and the outermost shell contains | back 51 2; 8 |
front 52 A hypothesis is | back 52 a proposed explanation for a set of observations |
front 53 What is the difference between a tissue and an organ system? | back 53 An organ system includes tissues. |
front 54 The teeth of grain-eating animals (such as horses) are usually broad
and ridged. This makes the teeth suitable for | back 54 a result of natural selection as well as the connection between form and function |
front 55 Which of the following statements about ecosystems is false? | back 55 Energy cycles from organisms through the atmosphere and back to the organisms |
front 56 During a discussion about ecosystems, a student says, "Plants
eat sunlight, and animals eat other organisms." Which | back 56 Plants don't eat sunlight, they use it to make sugars. |
front 57 Which of the following statements about evolution is true? | back 57 Evolution can result in adaptations. |
front 58 You notice that over the past month, many students on campus have
started wearing a new style of school sweatshirt.You think to yourself
that perhaps the bookstore has recently started selling this new
sweatshirt style. This is an example | back 58 a hypothesis |
front 59 Which of the following is a kingdom within the domain Eukarya? | back 59 Fungi |
front 60 If you eat a hamburger, you are mainly eating ground-up beef muscle.
What levels of organization are represented in | back 60 organelle, cell, and tissue |
front 61 In an ecosystem, energy | back 61 typically flows from producers through a series of consumers |
front 62 The tree in your backyard is home to two cardinals, a colony of ants,
a wasp's nest, two squirrels, and millions of | back 62 a community. |
front 63 Organisms that are prokaryotes are in the domains | back 63 Bacteria and Archaea. |
front 64 A scientist performs a controlled experiment. This means that | back 64 two versions of the experiment are conducted, one differing from the other by only a single variable. |
front 65 onsider the following statement: "If all vertebrates have
backbones, and turtles are vertebrates, then turtles
have | back 65 deductive reasoning |
front 66 Which of these sequences is not a correct pathway of energy through an ecosystem? | back 66 bacteria → plants → birds |
front 67 Your instructor asks you to look into your microscope to see a prokaryotic cell. You will be looking for a cell that | back 67 has a membrane |
front 68 Which of the following statements about genetics is true? | back 68 Differences among organisms reflect different nucleotide sequences in their DNA |
front 69 To be scientifically valid, a hypothesis must be | back 69 testable and falsifiable. |
front 70 Kingdom Fungi includes species | back 70 that obtain food by decomposing dead organisms and absorbing the nutrients |
front 71 An antibiotic kills 99.9% of a bacterial population. You would expect the next generation of bacteria | back 71 to be more resistant to that antibiotic. |
front 72 Members of the kingdom Animalia | back 72 can obtain their food by eating other organisms |
front 73 Which of the following statements is not consistent with Darwin's theory of natural selection? | back 73 Individual organisms experience genetic change during their life spans to better fit their environment |
front 74 Which of the following statements about ecosystems is false? | back 74 Bacteria and fungi recycle energy within an ecosystem |
front 75 The role of a control in an experiment is to | back 75 provide a basis of comparison to the experimental group. |
front 76 A phsosolipid is composed of | back 76 one glycerol molecule linked to one phosphate group and two fatty acids |
front 77 The abilty to stain protein molecules with a fluorescent dye would most clearly allow researchers to go beyond what thye could previously detected twith a microscope | back 77 Detect ribosome activity |
front 78 Nucleus of cell | back 78 contains dna |
front 79 Fuction of chroloplasts | back 79 photosynthesis |
front 80 A woman is having trouble becoming pregnant. Examination of a partner's sperm indicates that dynein feet are missing from flagella inhis sperm cells. A physicina explains tha could intefre with fertiliy by | back 80 preventing sperm from swimming |
front 81 Insulin is a protein that is priduced by pancreatic cells and secreted into the bloodstream. Which of the following options correctly lists the order of the structures through which insulin passes | back 81 rough ER, tansport vesicles, goli apparatus, transport vesicles, cell membrane |
front 82 Much of the intracellular structure of a eukaryoutic cell is involved in protein synthesis Most of the protein measuresd in the cells was likely synthesized by | back 82 ribosomes |
front 83 8000 times bigger | back 83 A scanning electron microscope |
front 84 You are told that the cells on a microscope slide are plant, animal, or baterial. Which one has a cell wall | back 84 plant cell |
front 85 Studies of the endomembrane stemoften What likey happen during inteventing time? | back 85 In the golgi before being seen in t |
front 86 Intermiate filaments | back 86 surround the nucleus |
front 87 Light microscopes | back 87 use light and glass lenses to magnify |
front 88 The technique used to produce the data displayed might be useful for cancer biologist to do what | back 88 Determine the effect of the drugs on protein sythesis at varios times in the cell cycle |
front 89 Skin is the body largest organ its made up of diifern types of cells Based in the function you would expect melancytes in the skin to have a higher than usual number of | back 89 ribosomes |
front 90 The nucleoid region of prokaryotic cells | back 90 contains the cells dna |
front 91 Developemnt of coronary artery | back 91 Fish oil |
front 92 A major type of lipid found in cell membrane is | back 92 phospholipids (water-proof) |
front 93 Thse two molecules are structural isomers diffence | back 93 location of double bonded |
front 94 Celluolose differs from starch | back 94 most animals cannot break down cellulose starch is easily digested |
front 95 structural proteins | back 95 found in hair and tendons |
front 96 how thse two amino acid attached together | back 96 amino acids grouped to the carboxyllic acid |
front 97 Amino group | back 97 Nh2 ammonia |
front 98 High fructose corn syrup made from corn the main carbohydrates in corn is a polysaccharide called | back 98 starch |
front 99 Example if secondary structure in proteins | back 99 an alpha helix |
front 100 Hydrocarbons are inorganic (false) Anything that has carbon is organic (true) | back 100 no data |