1st person shooter games free download best on the presentational speaking cultural comparison section of the exam.">

2016 ap biology free response answers question 7

2016 ap biology free response answers question 7

Request a no obligation estimate to see how cost effective this service is. Schools report saving over hours by simplifying their registration using Total Registration. This table is sortable by clicking on the header - Clicking on an Exam Name will show a comparison of the score distributions for all years compiled. Our services allow students to register for their high school's tests using an online form customized for their school.

Total Registration has been developed independently from and is not endorsed by the International Baccalaureate IB. Search For School. Contact Us info TotalRegistration. Follow totalreg Tweet. AP Research. The AP Research score is based on an academic paper, presentation, and oral defense. AP Seminar. Scores are both up and down from last year: increases in 4s, 5s, and 1s.

Art History. AP Biology free-response: best performance was on Q1 allele frequencies , followed by Q5 obligate mutualism. Calculus AB. These don't yet include the scores from outside North America. Retrieved 5 October Archived from the original on 1 April Retrieved 27 August Retrieved 1 April In treatment group II, the student placed 5 individuals of each species into a single container with the liquid growth medium.

The student then maintained the containers under the same environmental conditions and recorded the number of individuals in each population at various time points.

The results are shown in Table 2. Use the template to complete an appropriately labeled line graph to illustrate the growth of species A in treatment group I and species B in treatment group II unshaded columns. Provide reasoning for the reduced initial population sizes. The student repeated the experiment using a growth medium with a lower solute concentration. Predict how the activity of the contractile vacuole will change under the new experimental conditions. The rate of pyruvate conversion is greatly reduced in individuals with PDC deficiency, a rare disorder.

Provide reasoning to support your claims based on the position of the PDC-catalyzed reaction in the sequence of the cellular respiration pathway. Calculate the probability that the male offspring will have PDC deficiency.

A researcher is investigating the effect of a particular neurotoxin that causes the amount of acetylcholine released from presynaptic neurons to increase. Predict whether the maximum membrane potential of the postsynaptic neuron will increase, decrease, or stay the same. In model A, AChE is added to the synapse. In model B, AChE is added to the cytoplasm of the postsynaptic cell.

Predict the effectiveness of EACH proposed model. Provide reasoning to support your predictions. The researcher then calculated the percent divergence in the sequences between each pair of primate species Table 1. Using these data, calculate the rate of mtDNA percent divergence per million years between humans and their most closely related species in the data set.

Round your answer to two decimal places. Provide reasoning for the placement of gibbons as the outgroup on the cladogram. Amino acid synthesis in yeast cells occurs through metabolic pathways, and enzymes in the synthesis pathways are encoded by different genes. The synthesis of a particular amino acid can be prevented by mutation of a gene encoding an enzyme in the required pathway.

A researcher conducted an experiment to determine the ability of yeast to grow on media that differ in amino acid content.

Yeast can grow as both haploid and diploid cells. The researcher tested two different haploid yeast strains Mutant 1 and Mutant 2 , each of which has a single recessive mutation, and a haploid wild-type strain. The resulting data are shown in Table 1. In a second experiment, the researcher mates the Mutant 1 and Mutant 2 haploid strains to produce diploid cells. Using the table provided, predict whether the diploid cells will grow on each of the four media.

The researcher collected samples from six different tissues in a healthy mouse and measured the amount of mRNA from six genes. The data are shown in Figure 1. Provide reasoning to support your identification. The pigment heavenly blue anthocyanin is found in the vacuole of petal cells. Petal color is determined by the pH of the vacuole. A model of a morning glory petal cell before and after flower opening is shown in Table 1.

Polar bears are highly adapted for life in cold climates around the North Pole. Brown bears, black bears, and pandas are found in warmer environments.

Researchers collected complete mitochondrial DNA sequences from several populations of bears and constructed a phylogenetic tree to represent their evolutionary relatedness Figure 1. A researcher studying adaptation in bears sequenced the nuclear gene encoding a lysosomal trafficking protein LYST in polar bears, brown bears, black bears, and panda bears. There are seven inferred amino acid substitutions that are found only in polar bears. Mutations that cause similar substitutions in the human LYST protein are associated with Chediak-Higashi syndrome, an autosomal recessive condition in which pigment is absent from the hair and eyes.

The researcher used the inferred amino acid sequences to build the distance matrix shown in Table 1. Identify the population of brown bears to which polar bears are most closely related based on the mitochondrial DNA sequence comparison. Identify two populations whose positions could be switched without affecting the relationships illustrated in the phylogenetic tree. Circle the position on the cladogram that represents the out-group. Predict the most likely difference in phenotype of the transgenic mouse strain compared to the wild-type mouse strain.

If the lyst gene were the only determinant of fur color, predict the percent of white offspring produced by a mating between a polar bear and a brown bear. Some pathogenic bacteria enter cells, replicate, and spread to other cells, causing illness in the host organism. Host cells respond to these infections in a number of ways, one of which involves activating particular enzymatic pathways Figure 1.

Cells normally produce a steady supply of inactive caspase-1 protein. In response to intracellular pathogens, the inactive caspase-1 is cleaved and forms an active caspase-1 step 1. Active caspase-1 can cleave two other proteins. When caspase-1 cleaves an inactive interleukin step 2 , the active portion of the interleukin is released from the cell. An interleukin is a signaling molecule that can activate the immune response. When caspase-1 cleaves gasdermin step 3 , the N-terminal portions of several gasdermin proteins associate in the cell membrane to form large, nonspecific pores.

Researchers created the model in Figure 1 using data from cell fractionation studies. In the experiments, various parts of the cell were separated into fractions by mechanical and chemical methods.

Specific proteins known to be located in different parts of the cell were used as markers to determine the location of other proteins. The table below shows the presence of known proteins in specific cellular fractions. A student claims that preinfection production of inactive precursors shortens the response time of a cell to a bacterial infection.

Identify TWO fractions where N-terminal gasdermin would be found in cells infected with pathogenic bacteria. Seagrasses are aquatic plants that reproduce sexually. Male seagrass flowers produce sticky pollen that is carried by circulating water to female flowers, resulting in fertilization.

A researcher claims that mobile aquatic invertebrates can also transfer pollen from male to female flowers in the absence of circulating water. To investigate this claim, the researcher set up aquariums to model the possible interactions between the invertebrates and seagrasses.

Draw the appropriate symbols in the negative control aquarium AND the experimental aquarium. Do not use any symbol more than once in the same aquarium.

The common bedbug Cimex lectularius is a species of insect that is becoming increasingly resistant to insecticides. Bedbugs possess several genes suspected of contributing to the resistance, including P, Abc8, and Cps. To investigate the role of these genes in insecticide resistance, researchers deleted one or more of these genes in different strains of bedbugs, as indicated in Figure 1, and treated the strains with the insecticide beta-cyfluthrin.

Each strain was genetically identical except for the deleted gene s and was equally fit in the absence of beta-cyfluthrin. The percent survival of each strain following beta-cyfluthrin treatment is shown in Figure 1. Use the means and confidence intervals in Figure 1 to justify the claim that Abc8 is effective at providing resistance to beta-cyfluthrin. Abc8 encodes a transporter protein that pumps insecticides out of cells.

Cps encodes an external structural protein located in the exoskeleton that greatly reduces the absorption of insecticides. Based on this information and the data in Figure 1, explain how a deletion of both P and Abc8 results in lower survival in bedbugs compared with a deletion of Cps only. Some birds, including great spotted cuckoos, lay their eggs in the nests of other birds, such as reed warblers. The warbler parents raise the unrelated chicks and provide them with food that would otherwise be given to their biological offspring.

A researcher conducted an investigation to determine the type of relationship between warblers and cuckoos in an environment without predators. The researcher found that nests containing only warblers were more likely to be successful than nests containing warblers and cuckoos data not shown. A successful nest is defined as a nest where at least one chick becomes an adult warbler. In some geographic areas, several species of nest predators are present.

Researchers have found that cuckoo chicks, while in the nest, produce a smelly substance that deters nest predators. The substance does not remain in the nest if cuckoo chicks are removed. Figure 1 shows the probability that nests containing only warblers or containing both warblers and cuckoos will be successful in an environment with predators.

Score Distributions. AP Students. Not a student? Go to AP Central for resources for educators.

For the — 2016 ap biology free response answers question 7 year, the College Board unveiled a new curriculum with a greater focus on "scientific practices". This course is designed for students who wish to pursue an interest in the life sciences. The College Board recommends successful completion of high school biology and high school chemistry [2] before commencing AP Biology, although the actual prerequisites vary from school to school and bioology state to state. In addition to the standard biology topics above, students are required to be familiar with a set of 12 specific biology labs, as well as a weekend with the family full movie free lab procedure. Students are allowed to use a four-function, scientific, or graphing calculator. From Wikipedia, the free encyclopedia. For the television series, see A. Retrieved 5 October Archived from the original on 1 April Retrieved 27 2016 ap biology free response answers question 7 Retrieved 1 April Retrieved Retrieved July 9, Categories : Advanced Placement Bioscience answes. Namespaces 2016 ap biology free response answers question 7 Talk. Views Read Edit View history. Help Community portal Recent changes Upload file. Download as PDF Printable version. History U. 2016 ap biology free response answers question 7 If the plants do not use the strategy, they decrease the likelihood they will ever reproduce. Page 7. AP® BIOLOGY. SCORING GUIDELINES. © The. College Board, Advanced Placement Program, AP, AP Central, and the acorn logo Directions: Questions 1 and 2 are long free-response questions that require answers. You may begin writing your responses before the reading period is over. 7. 8 lap94 frequency (%). Salinity. Low. High. Download free-response questions from past AP Biology exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. The AP Bio FRQs are 60% of the exam including 2 long questions and 4 short questions. There will be 2 free-response questions to answer within 45 minutes​. 25 Minutes , 7, Short FRQ, Heredity, Heredity, /3, 7. Student Answer Sheet for the Multiple-Choice Section the −16 AP Exam Instructions book and in the actual exam. You may not discuss or share these specific free-response questions with anyone 7 7 7. 8 8 8. 9 9 9. G. ONLINE PR​. O. VIDER. CODE. D ay. O. S For Students Taking AP Biology. The AP Exam Score Distributions displayed by exam as tweeted by Trevor Packer, Multiple-choice: strongest scores on questions about art of Africa & Later Toughest AP Art History free-response question for students was on relics from AP Biology multiple-choice: students scored very well on Big Idea 2 (cellular. am. LGI. AP Calculus AB. Tues 5/9/ am. LGI+IMC Class. AP Calculus BC This Bulletin for AP Students and Parents contains important response questions and scoring guidelines, study skills, exam tips, and more. capabilities if you are taking the AP Biology, Calculus,. Chemistry. sud-ouest-tai-chi-chuan.org: Cracking the AP Biology Exam, Edition (College Test Preparation) 44 used & new from $ See All Buying 2 full-length practice tests with detailed answer explanations There were 2 questions about these in the entire 69 question multiple choice section and none in the free response questions. Discuss one aspect of bat biology that might slow the recovery of little brown bat populations to pre-WNS numbers. (1 point for a correct discussion of a correct. Advanced Placement Biology is an Advanced Placement biology course and exam offered by General Composition, Multiple Choice (50% of Score), Free Response (50% of Score) 69 questions in 90 minutes; 63 multiple choice; 6 short answer questions Score, , , , , , , , This device will be submerged underwater with a pipette attached to the end. You may begin writing your responses before the reading period is over. The graph shows that peas that have been germinating for three days consume more oxygen during a minute period than peas that have been germinating for one day. What is the initial rate of this enzymatic reaction? Practice is crucial to divide your time efficiently. A Key points to include: the organism you chose, clear identification of the experimental variable, clear explanation for the variables that you must control, an explanation of the apparatus that you will use to measure the cellular respiration Here is a possible response: Cellular respiration can most easily be measured by consumption of O 2 or by the production of CO 2. Germantown Festival Inc Presents. B Construct a graph to report your results, and graph the results that you would expect in your experiment. The high number of potential combinations from only four base pairs and the impact of small changes in the sequence of base pairs contributes to the diversity of proteins in an organism. Sample Responses Q5. Outside the U. In essence, long and diverse code leads to diverse proteins, which leads to diverse organisms. 2016 ap biology free response answers question 7