D. The frequency of both alleles will increase because the population will enter a period of rapid growth. C. The animals in population A accumulated fewer genetic mutations, adapting to their microclimate. (Kentucky Derby). C. Set up a new experiment in which these insects are sprayed with two different insecticides to see if they are more effective than Insecticides #1 and #2. The researchers determined that the East lava flow population is not in Hardy-Weinberg equilibrium. The mechanical properties and dimensions of the two bars are, E1=E2=200GPa,1=2=12106/CA1=25mm2,A2=50mm2,L1=3m,L2=5m,=1mm\begin{gathered} If sediment layers that are 3.6 billion years old are tested, they will contain relatively high iridium levels, because that is when many meteorites crashed into the Earth. Which of the following best predicts the impact on the lizard species if there is a gradual increase in the average temperatures found in both the lowlands and mountains in this region? A group of researchers claim that chance events play an important role in the evolution of populations. Table 1 shows the collected data. The MC1RD allele is not responsible for dark coat color in the Carrizozo population, so the dark coat color is likely a result of convergent evolution. Some scientists propose that due to human activity and climate change, a sixth mass extinction has already begun. Which of the following best explains the divergence in morphology in the birds? D. In response to different environments, populations A and B experienced different mutation rates, leading to the emergence of two different gene pools and, over time, new species A and B. There will be no difference in the populations observed in the controlled fire sites and the rest of counties 5 and 6. A. Telomeres consist of hundreds or thousands of repeats of the same short DNA sequence, which varies between organisms. describes how the L. clathratus population would be affected? ayo **** that girl who gave me the wrong answers. Graph that starts at 5.0 cm and ends at 9.0 cm. D. The M4 and M5 populations have the lowest genetic diversity of all populations. Which of the following would most likely represent the types of individuals found in one of the species resulting from shape becoming a prezygotic isolating mechanism in the initial population represented in Figure 1 ? Which of the following best predicts why humans and mice have identical telomeric repeat sequences? D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. D. The animals in population A mate at different times of year, causing their gametes to be incompatible with those from animals in populations B, C, and D. B. B. B. The second group is fed the same food without the mutagen. White circle, white box, and white triangle. Formation of crude proteins occurs by chance and occurs regardless of atmospheric O2O2 levels or available free energy. However, an additional mutation in the black allele changed it from a dominant to a recessive allele at the turn of the twentieth century, leading to a return to the dominance of the original peppered variety. WebDownload free-response questions from past AP Biology exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions. Students created a model showing one possible mechanism for speciation in which a geographic barrier separated one large population into two smaller populations, A and B. Quantitative Skills in the AP Sciences (2018) This reference guide is for students to use as they develop quantitative skills, such as using measurements, gathering and evaluating data, using quantitative evidence to support claims, and connecting empirical information to scientific theory, throughout the course. Curriculum Modules Download A famous study from the nineteenth century involves the peppered moth, Biston betularia, commonly found in Great Britain and Ireland. Which statement below best states an alternative hypothesis Fox could have used to frame his research? Which of the following best predicts the effect of the enclosure on the O'Neill population? This one-line file will contain letter grades separated by blanks.Your function should print the distribution of grades, as shown. The warmer temperatures will lead to a drier environment, so the plants will no longer produce enough nectar to attract the pollinators. A. The researchers built an enclosure to prevent migration into and out of the O'Neill rock pocket mouse population for a period of two years. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. D. The number of species present on Earth will equal the number of species on Earth after the last extinction. C. After 1940, natural selection prevented any additional speed increases. (b) Explain why some roofs are "blown outward" during high winds. In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. The scientists identified a period of stability or stasis, followed by rapid change, and then stasis again with regard to shell shape. Which of the following best predicts the effect of the enclosure on the O'Neill population? The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population. B. C. The group of mice fed the mutagen will show a greater ability to digest the food, because the higher genetic variation within the group makes it more likely that some individuals will have a combination of genes better adapted to the new food. In an experiment, the scientist creates two groups of twenty highly inbred mice. The MC1RD allele is not responsible for dark coat color in the Carrizozo population, so the dark coat color is likely a result of convergent evolution. In addition to the ABO blood groups, humans have an MN blood type system in which the M and N alleles are codominant to one another. Because the mice are highly inbred, they are essentially identical to one another. The current global warming trend is placing new selective pressures on the species involved in these relationships. Henslow's sparrow populations came to a peak in the mid1900s. Cells with flagella were better able to find food and escape predators. A scientist wishes to provide experimental evidence to support the model shown in Figure 1 by demonstrating the ability to synthesize an RNA molecule. Observed modern extinction rates will resemble the rates found early in previous extinctions. The presence of MC1RdMC1Rd alleles in the East lava flow population is an indication of gene flow from mice populations living on light granite rocks. Natural selection acted on variation that was present in both populations A and B, and the lack of gene flow eventually led to the formation of two new species. b) helping blood vessels to absorb nutrients. A. A scientist maintains a large population of the fruit fly Drosophila affinis in the laboratory. The switch to increased transport by planes during the twentieth century reduced this gene flow. A. Controlled fires in counties 4 and 5 will lead to an increase in the sparrow population. One group is given food with an added substance that is known to be a mutagen. B. A dark coat color provides camouflage to mice on the lava flow rocks; therefore, mice with dark coats have a lower predation rate in that habitat. A recent survey of ten Midwest counties are shown in Figure 1. Which of the following best predicts the impact on the lizard species if there is a gradual increase in the average temperatures found in both the lowlands and mountains in this region? Human activities can drive changes in ecosystems that affect the risk of extinction. The researchers determined that the East lava flow population is not in Hardy-Weinberg equilibrium. The MC1RDMC1RD allele is not responsible for dark coat color in the Carrizozo population, so the dark coat color is likely a result of convergent evolution. Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. Which of the following conditions of Hardy-Weinberg equilibrium was most likely not met in the northern elephant seal population following overhunting? C. Random mating D. Cells with mitochondria were able to utilize metabolic energy more efficiently. WebUnit 7 MCQ 4.9 (31 reviews) Flashcards Learn Test Match Which of the following best describes the processes occurring between the mouse populations and their A. Introns must be removed from eukaryotic DNA before the gene is inserted into the plasmid. B. (c) silicon The frequencies of the different phenotypes in the moth population changed randomly due to genetic drift. Scientists interested in the relationship among vision, foraging for food, and fitness studied three isolated populations of a small species of primate whose WebAp Bio Unit 7 Progress Check Mcq Answers. The results of breeding programs can be seen in the change in winning times of the Kentucky Derby from 1880 to the present, as shown in Figure 1. Dr. Sidney Fox wished to add to the heterotroph hypothesis of the origin of life by synthesizing simple proteins from a mixture of amino acids. WebView AP Biology Unit 7 Evolution; MCQ Questions 14.pdf from BIOLOGY 101 at Oakland High School, Oakland. Which of the following principles best justifies a claim that cheetahs, compared to other large cats, have a relatively low resilience to environmental perturbations? C. The species will experience a genetic bottleneck, and sympatric speciation will result in the development of several new species. John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis. The species will undergo artificial selection, as the genes will adapt to warmer temperatures. Add an additional treatment group to the experiment to measure the effectiveness of another insecticide (Insecticide #3) over several generations. Scientists are concerned that the lowlands will become much warmer by the end of the twenty-first century and will become unsuitable for this lowland lizard species. B. Bacterial ribosomes cannot recognize eukaryotic mRNA and will not translate the codon sequence. Which of the following is an alternative hypothesis that can be tested to support the RNA World Hypothesis? Of the following, which is the best next step for the researchers to best determine the long-term effectiveness of these insecticides with regards to the development of resistance? C. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. The model is shown in Figure 1. In the presence of available energy and the absence of a significant quantity of atmospheric O2 simple proteins will form spontaneously from a mixture of amino acids. Students created a model showing one possible mechanism for speciation in which a geographic barrier separated one large population into two smaller populations, A and B. B. Which of the following best explains why the population is not in Hardy-Weinberg equilibrium? a) filtering blood of harmful substances. Dark color is selected for in mice from the West, Mid, and East populations. The island was surveyed again in 2015, and scientists determined that the giant kangaroo rats originally in population A are now to be considered as a new species. n addition to the ABO blood groups, humans have an MN blood type system in which the M and N alleles are codominant to one another. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 1. B. Which of the following would be an appropriate alternative hypothesis? D. Migrating pollinators will start migrating later in the year, switching from spring-flowering plants to summer-flowering plants. The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. One group is given food with an added substance that is known to be a mutagen. The M4 and M5 populations have the lowest genetic diversity of all populations. Which of the specimens indicated in the table is the oldest? The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. A. B. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNARNA. B. The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. Which of the following best describes the expected distribution of proboscis size of the moths at the end of the fiveyear study? C. Cells with ribosomes were better able to produce proteins needed for a variety of metabolic functions. Scientists determined the frequencies of the M and N alleles in five localized and stable human populations in the Philippines, Immigration of individuals from Metro Manila into the two populations. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. B. The researchers wish to increase the reliability of their experimental observations before investigating new claims that chemotherapy-resistant tumors are an example of continuing evolution. z=ycos(xy),(2,2,2)z=y \cos (x-y), \quad(2,2,2)z=ycos(xy),(2,2,2), Write the electron configuration of the ion. Relationships of selected organisms based on catalase structure. Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein? This hypothesis states that the first genetic material was RNA, not DNA, and a transitional period led to the emergence of DNA as the storage molecule for genetic material. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. which of the following best provides evidence to support this claim? Neither group of mice will show any change in the ability to digest the food because thousands of years are required to develop such a change. After several generations, both groups of mice are given a new type of food that is harder to digest than the previous food. The model is shown in Figure 1. Which of the following best predicts why humans and mice have identical telomeric repeat sequences? C. Humans and mice share a recent common ancestor that had the 5-TTAGGG-35-TTAGGG-3 repeat sequence in its telomeres. WebUnit 7 Progress Check: MCQ Part B 3.5 (202 reviews) Which of the following sets of data provides evidence that best supports common ancestry for organisms in all three A. Natural selection acted on variation that was present in both populations A and B, and the lack of gene flow eventually led to the formation of two new species. Suppose the average concentration of SO2\mathrm{SO}_{2}SO2 is measured to be 400g/m3400 \mu \mathrm{g} / \mathrm{m}^{3}400g/m3 at 25C25^{\circ} \mathrm{C}25C and 1 atm. Only males can inherit the color blindness condition. A. Some scientists propose that due to human activity and climate change, a sixth mass extinction has already begun. Are the following statements true or false? Even though the population has rebounded following restrictions on seal hunting, genetic variation is greatly reduced in the northern species compared to that in the southern species. Convergent evolution, because these organisms do not share a recent common ancestor. Based on the data in Figure 1, which of the following would most affect the allelic frequencies of the populations on Isabela and Butuan? Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population. The animals in population A were reproductively isolated from those in populations B, C, and D. Figure 1. A group of researchers claim that chance events play an important role in the evolution of populations. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNA . The group of mice fed the mutagen will show a greater ability to digest the food, because the higher genetic variation within the group makes it more likely that some individuals will have a combination of genes better adapted to the new food. Geologic events such as mountain building can directly affect biodiversity. Because cheetahs, Acinonyx jubatus, experienced a bottleneck event about ten thousand years ago, living cheetahs exhibit very little genetic variation compared to other living species of large cats. Iridium is an element that is rare on Earth but commonly found in meteorites. The same species will be found in both static periods, but they will have different shell shapes. After rearing five additional generations of the mice on this new food, the two groups are assessed for how efficiently this new food is digested. The flow rate of ammonia at 10C(=624.6kg/m310^{\circ} \mathrm{C}\left(\rho=624.6 \mathrm{~kg} / \mathrm{m}^3\right.10C(=624.6kg/m3 and =1.697104kg/ms\mu=1.697 \times 10^{-4} \mathrm{~kg} / \mathrm{m} \cdot \mathrm{s}=1.697104kg/ms ) through a 222-cm\mathrm{cm}cm-diameter pipe is to be measured with a 1.51.51.5-cm\mathrm{cm}cm-diameter flow nozzle equipped with a differential pressure gage. A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. B. Scientists studying the fossils observed patterns of changing shell shape in the mollusks. B. Over time, populations A and B developed into two distinct species. D. During the last few decades, tall buildings have been built around the woodlot, and species 3, 4, and 5 are shadeintolerant plants. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 14. The second group is fed the same food without the mutagen. B. Most of the species found in the first static period will be absent in the second static period. A. Numbers above 0.125 indicate a high degree of relatedness. The plant species will flower earlier in the spring in response to rising temperatures before the arrival of the pollinators, so seeds will not be produced. Which of the following best explains the phenotypic pattern in the moths over time? WebLearn about unit 7 of AP Biology as we cover topics such as artificial selection, population genetics, hardy-weinberg equilibrium, evidence of evolution, common ancestry, continuing Which of the following best explains the divergence in morphology in the birds? Population numbers will continue to decline even in the controlled fire sites because human activities always lead to extinction. C. If a sediment layer that is 3.6 billion years old is tested, it will contain organic material. Start each population with genetically identical bacterial cells from a single culture to make sure that the initial genetic variation in all of the populations was exactly the same. The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. WebAP Biology Unit 7 MCQ B Term 1 / 18 Which of the following sets of data provides evidence that best supports common ancestry for organisms in all three domains? Start each population with genetically identical bacterial cells from a single culture to make sure that the initial genetic variation in all of the populations was exactly the same. Which of the following statements best predicts the result of a comparison between the fossils found before and after the period of rapid change? In the preceding exercise, if the stick is moving in a direction along its length (like a properly thrown spear), how long will you measure its length to be? The heterotroph hypothesis of the origin of life states that basic organic building blocks formed from inorganic molecules under the primitive conditions present early in Earth's development. D. By 1940, most genetic variation for speed had been lost from the gene pool. Geographic isolation will create separate gene pools, leading to speciation over time. Increasing the number of trials and the number of mice in each treatment group. In a particular region, a species of lizard lives in the lowlands. D. In the presence of available energy and the absence of a significant quantity of atmospheric O2O2 simple proteins will form spontaneously from a mixture of amino acids. Which of the following best describes what occurred during the periods indicated by the arrows? Based on the information provided in the figure, which of the following best describes how membrane-bound organelles provided unique evolutionary advantages to the last eukaryotic common ancestor? Even though there are numerous mountains in the region, the climate on the mountains is too cold for the lizards to survive. A scientist maintains a large population of the fruit fly Drosophila affinis in the laboratory. Assuming the thermometer to be a first-order system, find the time constant. B. Hunting in the nineteenth century has been blamed for a drastic reduction in the northern elephant seal population. False. Immigration of individuals from Metro Manila into the two populations. Select the correct answer for the following questions: Geographic isolation will create separate gene pools, leading to speciation over time. The presence of MC1Rd alleles in the East lava flow population is an indication of gene flow from mice populations living on light granite rocks. A group of researchers noticed that using a particular drug to treat cancer in mice would reduce the size of the tumor, but some of the tumor cells appeared to be resistant to the drug since some of these cells would increase in number over time. They found that although all 12 populations were exposed to the same environmental pressures, each population had differentiated from one another genetically after 10,000 generations. Which of the following sets of data provides evidence that best supports common ancestry for organisms in all three domains? D. Cattle and sheep are separated by only one node, and they are separated from the other organisms by more than one node. Which of the following best describes the processes occurring between the mouse populations and their environments? The frequency of the BB allele will increase because light-colored individuals will be more visible to predators. Some plant species flower in response to increasing daily temperatures in the spring. Find an equation of the tangent plane to the given surface at the specified point. Which of the following student claims is best supported by the data provided? To prevent the loss of genes as chromosome ends wear down during DNA replication, the tips of eukaryotic chromosomes have specialized DNA "caps" called telomeres. The logging industry created vast meadow habitats for the sparrow in the late 1800s. At the given instant, the rod is spinning about the zzz axis with an angular velocity 1=8rad/s\omega_1=8 \mathrm{rad} / \mathrm{s}1=8rad/s and angular acceleration 1=2rad/s2\dot{\omega}_1=2 \mathrm{rad} / \mathrm{s}^21=2rad/s2. The second group is fed the same food without the mutagen. C. Controlled fires in counties 6 and 8 will have no effect on the sparrow populations. Which of the following would be an appropriate alternative hypothesis? The animals in population A were reproductively isolated from those in populations B, C, and D. Which of the following statements best predicts the result of a comparison between the fossils found before and after the period of rapid change? Webanswer choices. B. Facts about the test: The AP Biology exam has 60 multiple choice questions and you will be given 1 hour A scientist believes that the first organic molecules may have come to Earth on meteorites 3.6 billion years ago. B. After several generations, both groups of mice are given a new type of food that is harder to digest than the previous food. WebAp Bio: Unit 7 Progress Check: MCQ describes how the L. clathratus population would be affected? Which of the following best describes the processes occurring between the mouse populations and their environments? Natural selection acted on variation that was present in both populations A and B, and the lack of gene flow eventually led to the formation of two new species. The frequency of the B allele will increase because light-colored individuals will be more visible to predators. Cattle are equally related to pigs and sheep, because the phylogeny places cattle between pigs and sheep. Many of these species rely on pollinators that migrate based on changes in day length and the position of the Sun. Immigration of individuals from Metro Manila into the two populations, Which of the following best explains the trend shown in Figure 1? A. Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein? Consider the hypothetical molecule B - A = B. C. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. This preview shows page 1 out of 1 page. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A Copyright 2017. The College Board. These materials are part of a College Board program. Use or distribution of these materials online or in print beyond your schools participation in the program is prohibited. L_2=5 \mathrm{~m}, \quad \bar{\delta}=1 \mathrm{~mm} Which of the following is an alternative hypothesis that can be tested to support the RNA World Hypothesis? Which of the following best explains the relationship between coat color and predation rate in the rock pocket mouse population on the lava flow rocks with respect to the different coat color phenotypes? C. Most of the species found in the first static period will be absent in the second static period. The animals in population A were reproductively isolated from those in populations B, C, and D. Mollusk fossils were excavated and collected from a coastal cliff. Which of the following would most likely represent the types of individuals found in one of the species resulting from shape becoming a prezygotic isolating mechanism in the initial population represented in Figure 1 ? A. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. A population of the species has the following allele frequencies: B=0.85 and b=0.15. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. A . A. The presence of MC1Rd alleles in the East lava flow population is an indication of gene flow from mice populations living on light granite rocks. The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. In addition to the ABO blood groups, humans have an MN blood type system in which the M and N alleles are codominant to one another. Scientists studying the fossils observed patterns of changing shell shape in the mollusks. natural D. There is a progression of cellular organization in organisms found in Bacteria, Archaea, and Eukarya. In a particular region, a species of lizard lives in the lowlands.

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