| Animal Organ Systems |
| 1. | A nerve leading to the small intestine causes the rate of digestion to increase. This nerve MOST LIKELY belongs to which of the following systems and divisions?
I. Autonomic
II. Sympathetic
III. Peripheral
IV. Enteric узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 2. | Which of these would a researcher test the blood for to determine if a person has been infected with a virus in the past? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 3. | Which correctly describes a process or event in the female reproductive cycle? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 4. | Which of these describes an adaptation to an arid environment? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 5. | Which of these does NOT secrete any digestive enzyme? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 6. | What sequence is followed by the path of blood from the heart? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 7. | Which of these correctly matches each structure to the germ layer from which it arises?
I. Femur
II. Brainstem
III. Lungs узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 8. | Which of these is the MOST LIKELY result of blood calcium levels falling too low? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 9. | Which precedes an action potential traveling down the axon of a neuron? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 10. | Which of these carries deoxygenated blood?
I. Pulmonary veins
II. Anterior vena cava
III. Pulmonary arteries узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| DNA Technology |
| 11. | A plasmid is added to bacteria cells, which are then spread on plates containing nutrient media. In order to select for cells that took up the plasmid, the узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 12. | Which DNA technique depends, in part, on a violation of Mendel\'s law of independent assortment? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 13. | A plasmid containing a normal human beta-globin allele is digested with restriction enzymes. The results are shown in lane 2 of the electrophoresis gel. A second plasmid, contain the beta-globin allele that results in sickle-cell disease, is digested in the same way and placed in lane 3. The standard in lane 1 contains DNA fragments in lengths of 100 base pairs (bp), 200 bp, and so on. Based on the results shown, which of these BEST describes the mutation that resulted in the sickle-cell allele? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 14. | A plasmid containing a normal human beta-globin allele is digested with restriction enzymes. The results are shown in lane 2 of the electrophoresis gel. A second plasmid, contain the beta-globin allele that results in sickle-cell disease, is digested in the same way and placed in lane 3. The standard in lane 1 contains DNA fragments in lengths of 100 base pairs (bp), 200 bp, and so on. Which of these describes the results shown on the gel?
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 15. | Which of these can be used to increase the amount of DNA available for analysis?
I. Cloning a plasmid
II. Gel electrophoresis
II. PCR узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| DNA, RNA, and Proteins |
| 16. | Which of these labels matches the structure of the partial RNA strand shown? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 17. | The genetic code table shows the amino acids that correspond to mRNA codons. Each codon is read from 3\' (first nucleotide) to 5\' (third nucleotide). A DNA template strand is shown. Which amino acid sequence will be assembled from the mRNA associated with this strand? DNA template strand: 5\'-GCG ACA TAC ACT-3\' 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 18. | An original cell replicates its DNA. The cell undergoes mitosis and cell division, and one of the daughter cells replicates its DNA. Which of these BEST describes the DNA of the second-generation daughter cells? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 19. | Which answer choice matches the functions listed below to the correct RNA types?
I. Interprets a codon as an amino acid
II. Binds to a gene transcript
III. Contains information for assembling a protein узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 20. | The partial sequence of a single DNA strand is shown. What will be the sequence of the complementary strand produced during DNA replication? 3\'-ATGCTGAACT-5\' узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Ecology |
| 21. | Which of these best describes the population growth shown in the graph? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 22. | All of these are likely consequences of removing a keystone species from an ecosystem, EXCEPT a/an узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 23. | Which of these relationships results in harm to one of the species involved?
I. Commensalism
II. Predation
III. Herbivory узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 24. | Which of these are plant adaptations to hot, dry climates?
I. CAM
II. Mycorrhizae
III. C4photosynthesis узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 25. | Which processes remove nitrogen from the atmosphere?
I. Fertilizer production
II. Eutrophication
III. Nitrogen fixation
IV. Denitrification узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 26. | Which of these examples is represented by the Type III curve shown? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 27. | Compared to a country that has undergone demographic transition, a country that has NOT undergone this transition has which of the following?
I. Higher birthrate
II. Lower death rate
III. Higher growth rate узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 28. | The net primary production (NPP) of a stable lake ecosystem is roughly equal to the amount of узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 29. | Which type of biome is found at the lowest latitudes? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Energy, Respiration, and Photosynthesis |
| 30. | How does the ATP synthase enzyme function in the cell? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 31. | Which choice matches each description below to the correct stage of aerobic respiration?
I. Produces most of the ATP
II. Produces carbon dioxide (CO2)
III. Uses oxygen (O2) узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 32. | Which of these produces a three-carbon sugar from carbon dioxide? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 33. | Which of these releases carbon dioxide?
I. Lactic acid fermentation
II. Alcohol fermentation
III. Aerobic respiration
IV. Photosynthesis узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 34. | All of the following take place in the thylakoid of the chloroplast EXCEPT узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Enzymes and Reactions |
| 35. | As a reaction proceeds, reactants form a transition state, which then forms the products. An enzyme affects the energy of the узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 36. | Which term most nearly means substrate? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 37. | Which of these describes a characteristic of the induced-fit model but not the lock-and-key model? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 38. | Which of these is likely to reduce enzyme activity?
I. Increasing pH level
II. Decreasing temperature
III. Placing enzyme in a nonpolar liquid узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Evolution and Natural Selection |
| 39. | Question below refers to the phylogenetic tree of fly families shown. Which two families of flies share the GREATEST number of nucleotide base pair sequences? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 40. | The graph shows the distribution of fur color in a population of rodents. Over time, the environment changes so that it includes only light and dark rocks, with little vegetation. How will natural selection affect the distribution of phenotypes in this population? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 41. | Which of these form the basis of natural selection?
I. Random mating
II. Limited environmental resources
III. Stable genotype frequencies over time узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 42. | Question below refers to the phylogenetic tree of fly families shown. According to the phylogenetic tree, which speciation event occurred EARLIEST? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 43. | A recessive allele accounts for 60% of the alleles of a gene in a population. What proportion of the individuals in this population are heterozygous? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Genetic Inheritance |
| 44. | A woman expresses an X-linked recessive disorder. Which of these conclusions can DEFINITELY be made about the woman\'s parents?
I. Her mother passed on an allele for the disorder.
II. Her father expresses the same disorder.
III. Her mother does not express the disorder. узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 45. | In fruit flies, brick-red eye color is dominant to a bright orange color called cinnabar. A fruit fly with heterozygous eye color geno-type is crossed with homozygous recessive fruit fly. What is the probability of inheritance for the cinnabar phenotype and the heterozygous genotype? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 46. | In fruit flies, brick-red eye color is dominant to a bright orange color called cinnabar. A fruit fly with heterozygous eye color geno-type is crossed with homozygous recessive fruit fly. What is the probability of inheritance for the cinnabar phenotype and the heterozygous genotype? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 47. | Which of these is an example of polygenic inheritance?
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Meiosis and Mutations |
| 48. | In meiosis, crossing over takes longer than any other process. Which stage of meiosis is most likely the longest? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 49. | The diagram shown compares a normal chromosome with one that has undergone a rearrangement. The rearrangement is BEST described as a/an 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 50. | At which stage of meiosis do cells from a sperm cell precursor contain a haploid set of chromosomes, each consisting of two sister chromatids? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 51. | Which of these mutations in a gene will MOST LIKELY result in a shortened protein with a long sequence of substituted amino acids? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 52. | At which stage in meiosis are sister chromatids of each chromosome identical?
I. Beginning of prophase I
II. Beginning of metaphase I
III. End of telophase I узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Plants |
| 53. | Which of these is/are responsible for an increase in the thickness of a plant?
I. Apical meristem
II. Vascular cambium
III. Cork cambium узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 54. | Which of these correctly matches the plant cells to their tissue systems?
I. Guard cell
II. Palisade mesophyll cell
III. Sieve- tube member узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 55. | Which of these describes a difference between monocots and dicots? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 56. | Which of these increase the movement of sap within the xylem?
I. Water moves into guard cells’ vacuoles.
II. Humidity increases in surrounding air.
III. Root endodermis prevents ions from entering xylem. узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 57. | Which of these plant forms are diploid?
I. Spore
II. Sporophyte
III. Gametophyte узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| The Cell |
| 58. | Which of these cell structures contains one or more membranes?
I. Ribosome
II. Plasma membrane
III. Endoplasmic reticulum
IV. Golgi body узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 59. | Cyanobacteria are photosynthetic prokaryotes. Which organelles do cyanobacteria cells contain?
I. Chloroplasts
II. Nucleus
III. Ribosomes узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 60. | A cell normally contains 54 chromosomes. During which phases of mitosis does the cell contain 108 chromosomes?
I. Anaphase
II. Metaphase
III. Prophase
IV. Telophase узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 61. | A cell contains multiple nuclei with identical genetic information. This cell most likely formed by going through узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 62. | What is the correct sequence of these events in the cell cycle?
I. Nuclear membrane dissolves.
II. Cell size increases.
III. Two daughter cells form.
IV. DNA replicates. узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| The History and Diversity of Life |
| 63. | Which of these is a tetrapod that is NOT an amniote? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 64. | In the Oparin-Haldane experiment, the artificial atmosphere they created contained which of the following?
I. Hydrogen gas
II. Oxygen gas
III. Reducing gases узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 65. | How did the results of the Urey-Miller experiment affect the Oparin hypothesis? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 66. | Which of these features are found in the phylum that includes centipedes?
I. Ventral nerve cord
II. Segmented body
III. Calcium- rich shell
IV. Jointed limbs узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 67. | A unicellular organism contains a Golgi body and ribosomes but lacks a cell wall. It is heterotrophic, ingesting food via phagocytosis. What kingdom does this organism belong to? узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| Water, Cell Membranes, and Transport |
| 68. | A solute cannot move into a cell by crossing the phospholipid bilayer of the membrane. It can, however, enter through a membrane protein. The fact that solute molecules are entering the cell MOST LIKELY indicates that узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 69. | A plant cell is placed in a hypotonic solution. As a result, the cell will узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 70. | Which of these BEST describes the part of the molecule shown? 
узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
| 71. | How can a water molecule BEST be described?
I. It is nonpolar.
II. It has an equal electron distribution.
III. It is able to form hydrogen bonds. узнать ПРАВИЛЬНЫЙ ответ | добавить объяснение | |
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