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- Visit the College Board on the web: collegeboard.org. AP Central is the oficial online home for the AP Program: apcentral.collegeboard.org.
apstudents.collegeboard.org/ap/2019-08/ap19-sg-biology.pdfAP Biology Scoring Guidelines from the 2019 Exam Administration
Teachers: Explore timing and format for the AP Biology Exam. Review sample questions, scoring guidelines, and sample student responses.
- Ap Biology Past Exam Questions
Download free-response questions from past AP Biology exams,...
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AP Classroom is a free and flexible online platform that...
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- AP Biology Scoring Guidelines
Visit the College Board on the Web: www.collegeboard.org. AP...
- About The Exam
The AP Biology Exam will test your understanding of the...
- Ap Biology Past Exam Questions
Download free-response questions from past AP Biology exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions.
- Total for part (c)
- Question 2: Interpreting and Evaluating Experimental Results with Graphing
- 1 point
- 4 points
- Question 3: Scientific Investigation
- Process
- Question 6: Analyze Data
(d) A drug is designed to bind to cholera toxin and prevent the toxin from crossing the intestinal cell membrane. Scientists mix the drug with cholera toxin and then add this mixture and GTP to a sample of intestinal cell membranes. Predict the rate of cAMP production in pmol per mg adenylyl cyclase per min if the drug binds to all of the toxin.
During meiosis, double-strand breaks occur in chromatids. The breaks are either repaired by the exchange of genetic material between homologous nonsister chromatids, which is the process known as crossing over (Figure 1A), or they are simply repaired without any crossing over (Figure 1B). Plant breeders developing new varieties of corn are interest...
strains II and III . Strain I is higher/different (in the average number of crossovers) compared with strains II and III . Total for part (b)
(c) Based on the data, describe the relationship between the average number of double- 1 point strand breaks and the average number of crossovers in the strains of corn analyzed in the experiment. • (In general) there is a direct correlation/positive relationship (between the number of double-strand breaks and the number of chromatid crossovers). (...
Fireflies emit light when the enzyme luciferase catalyzes a reaction in which its substrate, D-luciferin, reacts to form oxyluciferin and other products (Figure 1). In order to determine the optimal temperature for this enzyme, scientists added ATP to a solution containing D-luciferin, luciferase, and other substances needed for the reaction. They ...
The following models represent all the interacting species in two different communities with some of the same species and feeding relationships. These models assume that both communities have the same initial biomass. The models can be used to understand the effects of human activities on the communities. Figure 1. Models of two different communiti...
Researchers are studying the use of RNA vaccines to protect individuals against certain diseases. To develop the vaccines, particular cells are first removed from an individual. Then mRNAs coding for specific proteins from a pathogen are introduced into the cells. The altered cells are injected back into the individual, where the cells make the pr...
AP® BIOLOGY 2019 SCORING GUIDELINES © 2019 The College Board. Visit the College Board on the web: collegeboard.org. Question 2 (continued) (b) As shown in the table, the researcher established treatment group II with 5 individuals of each species. Provide reasoning for the reduced initial population sizes. Reasoning (1 point)
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Visit the College Board on the Web: www.collegeboard.org. AP Central is the oficial online home for the AP Program: apcentral.collegeboard.org. Question 1. Figure 1. Phylogenetic tree representing the evolutionary relatedness among bear populations based on mitochondrial DNA sequence comparisons.
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AP® BIOLOGY 2017 SCORING GUIDELINES Question 1 (continued) Identification (3 points; 1 point per row) Null hypothesis Increasing caffeine concentration has no effect (on the number of floral visits by bees).
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The AP Biology Exam will test your understanding of the biological concepts covered in the course units, as well as your ability to utilize the scientific method and analyze data. You are allowed to use a four-function calculator (with square root), scientific, or graphing functions throughout exam. This is a hybrid digital exam.
