A shift to less polluting fuel in the twentieth led to cleaner air and a lightening of the moth's normal habitat. After the 20 generations, DNA sequencing was used to determine the genetic composition of each population. The SinoHimalayan fern, Lepisorus clathratus is Which of the following would be an appropriate alternative hypothesis? 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. Models of a prokaryote, first eukaryotic common ancestor, and last eukaryotic common ancestor. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. E1=E2=200GPa,1=2=12106/CA1=25mm2,A2=50mm2,L1=3m,L2=5m,=1mm. A mixture of ribonucleotides such as adenine and uracil will spontaneously form single-stranded chains of RNARNA. If the gage reads a pressure differential of 4kPa4\ \mathrm{kPa}4kPa, find the flow rate of ammonia through the pipe, and the average flow velocity. Can the voltage across a battery's terminals be higher than the battery's rated voltage? A. When a population is reduced, new niches become available in the environment, which can trigger adaptive radiation. 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. D. The number of species present on Earth will equal the number of species on Earth after the last extinction. The species will undergo artificial selection, as the genes will adapt to warmer temperatures. The logging industry created vast meadow habitats for the sparrow in the late 1800s. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 14. B. 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. WebAp Bio Unit 7 Progress Check Mcq Answers. D. Cells with mitochondria were able to utilize metabolic energy more efficiently. 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? 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. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. 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. The population was predominantly black throughout the nineteenth century. Click the card to John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, PL-600: Microsoft Power Platform Solution Arc. C. Humans and mice share a recent common ancestor that had the 5-TTAGGG-35-TTAGGG-3 repeat sequence in its telomeres. Image courtesy of Pixabay Facts about the test: The AP Biology exam has 60 multiple choice questions and you will be given 1 hour Many of these species rely on pollinators that migrate based on changes in day length and the position of the Sun. 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? Which of the following is closest to the frequency of the MC1RD allele in the Tule Mountain population. D. The original habitat was tropical, which increased the rate of mutation and led to rapid diversification. C. Most of the species found in the first static period will be absent in the second static period. The two populations will show significant genetic differences because the founder effect will result in significant losses in diversity in the smaller population. Population B was separated for a longer time from the original population than population A was, and population B evolved into a more distinct new species than population A did. Which of the following best predicts why the recombinant bacteria will fail to produce the eukaryotic protein? 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 explains the divergence in morphology in the birds? A group of birds is found in an island chain that have all descended from a single ancestral species. C. The woodlot is shaded, with little direct sunlight, and species 3, 4, and 5 are shade-intolerant canopy trees. 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 famous study from the nineteenth century involves the peppered moth, Biston betularia, commonly found in Great Britain and Ireland. WebView AP Biology Unit 7 Evolution; MCQ Questions 14.pdf from BIOLOGY 101 at Oakland High School, Oakland. Some researchers claim that the decrease in plant species richness of this woodlot is unrelated to human activities over the last forty years. If you are giving the alternate exam for late testing, say: It is Friday afternoon, May 24, and you will be Figure 1 shows the phylogeny of the birds. (d) aluminum. A small segment of the original population is exposed to different environmental conditions, and a new subspecies emerges through natural selection. 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. The second group is fed the same food without the mutagen. The original habitat had many available unoccupied ecological niches that were colonized by populations of the original species. 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. D. By 1940, most genetic variation for speed had been lost from the gene pool. Which of these would be an appropriate null hypothesis to test related to whether meteorites hit the Earth 3.6 billion years ago? a) filtering blood of harmful substances. 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. A. 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? d) releasing chemicals that begin to break down food in the mouth. AP Biology Practice Test: Unit 7 Natural Selection 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. In an experiment, the scientist creates two groups of twenty highly inbred mice. Explain. Some lizards will migrate to new habitats in the mountains and become isolated, leading to allopatric speciation. Which of the following best describes the processes occurring between the mouse populations and their environments? The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. c) storing bile that is released into the bloodstream. C. The species will experience a genetic bottleneck, and sympatric speciation will result in the development of several new species. Because the mice are highly inbred, they are essentially identical to one another. Based on the phylogenetic relationships shown in Figure 1, which of the following best explains the similarities exhibited by whales, bony fishes, and cartilaginous fishes? Figure 1 describes a possible scenario, known as the RNA World Hypothesis, that could have led to the evolution of our modern-day genetic material. The remaining members of the population are allowed to randomly mate with one another to produce generation 2 and future generations. 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? A. Which of the following best describes the processes occurring between the mouse populations and their environments? The second group is fed the same food without the mutagen. Populations with little genetic diversity are less likely to contain individuals that can withstand different selective pressures. A shift to less polluting fuel in the twentieth led to cleaner air and a lightening of the moth's normal habitat. 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? 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. A. Specimen 1 Bacteria and eukaryotes use different mRNA codons for the same amino acids during translation. The frequency of the MC1RD allele will decline due to natural selection. Natural selection Unit 4 Chapters 7 & 8 Attitude and Attitude C, John David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine, David N. Shier, Jackie L. Butler, Ricki Lewis. similarities exhibited by whales, bony fishes, and cartilaginous fishes? 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. By 1940, most genetic variation for speed had been lost from the gene pool. The liver helps the circulatory system by _________. Which of the following best explains the mechanism that caused this speciation event in the giant kangaroo rats of population A? 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 specimens indicated in the table is the oldest? Immigration of individuals from Metro Manila into the two populations, Which of the following best explains the trend shown in Figure 1? If geologic events lead to a series of new mountain ranges that divide the plateau into several discrete valleys, which of the following best describes how the L. clathratus population would be affected? Which of the following would be an appropriate alternative hypothesis? The second group is fed the same food without the mutagen. A group of researchers claim that chance events play an important role in the evolution of populations. (c) silicon 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? 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? There is no difference in iridium levels in sediments that were deposited on Earth 3.6 billion years old, compared to recent sediments. AP Bio 5.7 Multiple Choice Questions | Fiveable 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? 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 ? Both the larger population and the isolated population were maintained under identical conditions and allowed to mate randomly for another 20 generations. Most of the species found in the first static period will be absent in the second static period. 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. Iridium is an element that is rare on Earth but commonly found in meteorites. D. Most of the species found in the second static period will resemble each other more than the species found in the first static period. PPC#7A Answers.pdf - AP Biology Scoring Guide Unit 7 The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. Over time, populations A and B developed into two distinct species. Immigration of individuals from Metro Manila into the two populations After 20 generations of allowing this population of about 1000 flies to mate randomly, 10 females and 10 males were isolated from the rest of the population. Which of the following best explains the divergence in morphology in the birds? However, the distance between the rigid walls to which the two bars are attached was measured incorrectly, so that a misalignment of \bar{\delta} (exaggerated in Fig. Hunting in the nineteenth century has been blamed for a drastic reduction in the northern elephant seal population. Human activities can drive changes in ecosystems that affect the risk of extinction. 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 ? B. Start each population with a different species of bacteria to determine whether the same environment has an effect on genetic differentiation. D. Controlled fires in counties 4 and 5 will lead to an increase in the sparrow population. 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? One group is given food with an added substance that is known to be a mutagen. White circle, white box, and white triangle. The following questions were not written by College Board and although they cover information outlined in the AP Biology Course and Exam Description the formatting B. B. 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. Determine the amount T(C)\Delta T\left({ }^{\circ} \mathrm{C}\right)T(C) by which the two bars would need to be uniformly heated to bring the holes in the two bars into alignment. 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. Which of these would be an appropriate null hypothesis to test related to whether meteorites hit the Earth 3.6 billion years ago? Which of the following student claims is best supported by the data provided? Continue treating the three insect populations with the same insecticides and determine whether their efficiencies decline significantly after several generations. Cattle are equally related to pigs and sheep, because the phylogeny places cattle between pigs and sheep. C. During the nineteenth century, increased ship commerce between Great Britain and Ireland facilitated the gene flow of the black variety, spreading it throughout the moth's normal range. WebDownload free-response questions from past AP Biology exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions. The increased air pollution of the nineteenth century due to the use of coal led to a darkening of surfaces from soot. Scientists claim that some of the populations in Marion County are at an increased risk of decline or extinction. WebClick the card to flip . D. 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. 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. C. Organisms in Bacteria, Archaea, and Eukarya each have adenine, thymine, guanine, and cytosine bases forming their DNA. Because the mice are highly inbred, they are essentially identical to one another. A shift to less polluting fuel in the twentieth led to cleaner air and a lightening of the moth's normal habitat. The telomeric repeat sequences for selected organisms are given in Table 1. Convergent evolution, because these organisms do not share a recent common ancestor. B. Two drag forces act on a bicycle and rider: FD1F_{\mathrm{~D} 1}FD1 due to rolling resistance, which is essentially velocity independent; and FD2F_{\mathrm{~D} 2}FD2 due to air resistance, which is proportional to v2v^2v2. AP Biology AP Classroom Unit 7 FRQ Flashcards | Quizlet All of the selective breeding programs ended in 1940. A. AP Biology Unit 7 Progress Check Flashcards | Quizlet 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. The darker backgrounds conferred a selective advantage to the black variety, as described by natural selection. Some scientists propose that due to human activity and climate change, a sixth mass extinction has already begun. Controlled fires in counties 4 and 5 will lead to an increase in the sparrow population. (b) Explain why some roofs are "blown outward" during high winds. 19 Attempt 2: Communities & Ecosys, Teaching and Learning Across the Lifepsan. The same species will be found in both static periods, but the species in the second static period will have smaller shells due to the stress of undergoing rapid change. 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. C. Dark color is selected for in mice from the West, Mid, and East Populations. 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. 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. The researchers determined that the East lava flow population is not in Hardy-Weinberg equilibrium. Which of the specimens indicated in the table is the oldest? A. Telomeres consist of hundreds or thousands of repeats of the same short DNA sequence, which varies between organisms. A researcher uses the protocol shown in Figure 1 to isolate a eukaryotic gene for the purpose of genetically engineering bacteria to synthesize the corresponding protein. 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 ? E_1=E_2=200 \mathrm{GPa}, \quad \alpha_1=\alpha_2=12 \times 10^{-6} /{ }^{\circ} \mathrm{C} \\ B. Thoroughbred race horses are subject to intense artificial selection to produce faster-running horses. Which of the following is the most reasonable prediction about the results of the experiment? 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. Which of the following is an alternative hypothesis that can be tested to support the RNA World Hypothesis? B. Add an additional treatment group to the experiment to measure the effectiveness of another insecticide (Insecticide #3) over several generations. 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.
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