Transcript EOC 1
1,000,000 500,000 250,000 125,000 64,000 32,000 16,000 8,000 4,000 2,000 1,000 500 300 200 100 Click to return to question, Cont-P to switch to the pen, cross out two incorrect answers, then Cont-A to switch back to pointer. Click to return to the question and poll the class Click on link to Ask Jeeves, or click on this oval to return to question and ask a friend Theory A is a well-established scientific theory. One hypothesis that could refute this theory is successfully tested over many experiments. What action must be taken for this hypothesis to pose a legitimate challenge to Theory A? A. publishing data for peer review C. Bacteria were the first type of living organisms to appear on earth B. Life evolved on earth from inanimate chemicals D. Complex organic molecules can form spontaneously under conditions that probably existed on the early earth A.publishing data for peer review Back to Board A student performed an investigation of blood pressure. The data is shown above in the table. The student concluded the resting heart rate affects the resting blood pressure. Which statement support’s the student’s conclusion? A. Subjects Q and S have the same resting blood pressure B. Subjects Q and R are different ages C. Subjects R and T have different resting blood pressure D. Subjects S and T are the same gender C. Subjects R and T have different resting blood pressure Back to Board The diagram above shows the process of meiosis. The segregation that occurs during meiosis results in a A. Decrease in the total number of cells per organism B. reduction in the number of chromosomes per cell C. single fertilized egg cell D. group of genetically identical cells B. reduction in the number of chromosomes per cell Back to Board Scientists determined that excess fertilizer from farms entered a shallow lake. The fertilizer caused an increase in aquatic plants in the lake and then a decrease in oxygen in the water. Next, organic debris collected on the bottom of the lake. Over several years, the lake gradually filled in with organic sediment. As the fertilizer levels increased, the population of consumers in the lake declined. Which change most likely caused this decline? A. Decrease in available oxygen B. increase in light intensity C. Increase in temperature D. Decrease in carbon dioxide Decrease in available oxygen Back to Board Loriciferans are microscopic multicellular animals that live in various marine sediments. Scientists have discovered genera of Loriciferans in a deep-sea habitat that lacks oxygen. Before this discovery, some prokaryotes and some unicellular eukaryotes were known to inhabit anaerobic environments. Among the newly discovered Loriciferans is Spinoloricus sp nov., which is show above. Scientists determined that organisms of the genus Spinoloricus were eukaryotes and not prokaryotes because Spinoloricus cells have A. Flagella B. Hereditary material C. Cell walls D. nuclear membranes D. nuclear membranes Back to Board The diagram above represents part of a process that occurs in cells. Which process is represented? A. Meiosis B. osmosis C. translation D. replication C. translation Back to Board The pictures above show the limbs of four different species. The four species illustrated most likley have similar limb structures because they all A. Use their limbs for the same function B. Share a common ancestor C. Occupy the same level in a food pyramid D. Adapted to the same environmental conditions B. Share a common ancestor Back to Board Amino acids link together by peptide bonds to form proteins. In which cellular organelle would this process occur? A. Lysosome B. Golgi body C. ribosome D. mitochondrion C. ribosome Back to Board In a certain variety of chicken, some offspring have a feather pattern that is black-and-white checkered. Chickens with this checkered feather pattern result from the cross of a black chicken with a white chicken. Which of the following types of inheritance is most likely responsible for the checkered feather pattern? A. polygenic B. sex-linked C. dominant D. codominant D. codominant Back to Board A student observes a unicellular organism under a microscope. After a while, the organism begins to split into two cells, a shown in the diagram. Which of these structures does the organism shown above use to move itself? A. nuclei B. cilia C. flagella D. ribosomes B. cilia Back to Board The results of a genetic process are represented in the diagram above A. crossing over during meiosis B. chromosomal mutation C. Independent assortment D. Nondisjunction during meiosis A. crossing over during meiosis Back to Board The water quality of the Biscayne Bay is measured by the Biscayne Bay Water Quality Monitoring Program. Scientists measure the salinity, temperature, pH, and oxygen levels to help determine the health of the Bay. Healthy water also contains appropriate amounts of nutrients. Monitoring water quality helps communities make decisions about the Bay. Which of these would likely be the most immediate result if the oxygen levels in the Bay decreased by 90%? A. decrease in salinity levels B. decrease in fish populations C. increase in producer populations D. increase in water temperature B. decrease in fish populations Back to Board The figure above shows genetic material. What information confirms that this is an RNA molecule? A. the molecule contains adenine B. The molecule has hydrogen bonds. C. the molecule is single stranded D. The molecule has a sugar-phosphate backbone. C. the molecule is single stranded Back to Board The chart below shows the results of an experiment to determine the most likely area in which to find pill bugs. Which graph below is the BEST representation of these data? A. B. C. D. D. Back to Board A biologist has hypothesized that a structure in the digestive tract of birds is homologous to a structure in the digestive tract of certain mammals. Which of the following findings would provide the best evidence in favor of this view? A. The two structures appear almost identical at an early stage of embryonic development B. The genes coding for the two structures utilize the same nitrogenous bases C. The structures are vestigial in the digestive tracts of both birds and mammals D. The structures perform similar digestive functions in birds and mammals A. The two structures appear almost identical at an early stage of embryonic development Sorry, try again! Thanks for playing!