Ap biology frq questions

Mar 28, 2024 ... In this video, I'll answer some of the most frequently asked questions I get about the AP Biology exam. If you're studying for the AP Bio ...

Study with Quizlet and memorize flashcards containing terms like 1. Organisms obtain nutrients and eliminate waste products efficiently by maintaining high surface area to volume ratios at the cellular level. Explain this statement using mathematical evidence and describe ONE specific example in a plant OR animal structure that increases the surface …The AP Biology exam used to consist of eight long-form free response questions, but in 2019 it was redesigned to consist of only six free response questions. Two of those …AP Biology Curriculum TEST PREP BUNDLE - Unit 1 to Unit 8 - 19 FRQs, 400 MCQs: Maximize your students' success on the AP Biology exam with a dynamic combination of 19 Free Response Questions (FRQs) and 400 Multiple Choice Questions (MCQs) spanning Units 1 to 8, tailored for comprehensive test preparation.Nov 15, 2014 ... 2002 AP Biology Free-Response Questions Form B.AP Biology is known for being one of the tougher AP exams, and, for most students, the free-response section is the hardest part of the test.In 2021, the average score for every free-response question was less than a 50%! However, knowing what to expect can make it easier to get a great score on AP Biology FRQ. And in this guide, we explain everything …Free Response Question: Unit 2 AP ® Biology This free-response question (FRQ) only includes information from Unit 2. The purpose of this is to provide targeted FRQ practice …

1. First, RNA polymerase binds to what is known as promoter DNA. This DNA is a sequence that signals the start of genetic information for a particular gene. 2. RNA polymerase unwinds and separates the DNA by creating a structure known as the transcription bubble. This bubble breaks the hydrogen bonds between nucleotides.AP Biology Free Response Questions . The free response section consists of two long-form free-response questions, both of which require data analysis, and four short-form free-response questions that require a paragraph-length response that covers your ability to describe, explain, predict, justify, or represent a given scenario. ...Directions: Questions 1 and 2 are long free-response questions that require about 25 minutes each to answer. Questions 3 through 6 are short free-response questions that require about 10 minutes each to answer. Read each question carefully and completely. Answers must be written out in paragraph form.Questions 1 and 2 are long free-response questions that require about 22 minutes each to answer and are worth 10 points each. Questions 3–8 are short free-response questions that require about 6 minutes each to answer. Questions 3–5 are worth 4 points each and questions 6–8 are worth 3 points each. Read each question carefully and completely.AP Biology AP Classroom Unit 7 FRQ. 10 terms. Sivinity. Preview. Topic 5 Notes - Antibody based methods and protein sequence. 58 terms. Joelle_Maio. Preview. Week 8 Review. Teacher 10 terms. Allison_7777777. Preview. AP Biology Unit 6 MCQ. 24 terms. I_am_failing. Preview. Unit 7 MCQ. 24 terms. SugarSpiceSalt. Preview. Bio 201 Exam 1 .The AP multiple choice exam 2002 biology questions biology section ii hour and 30 minutes directions: answer all questions. answers must be in essay form.AP Central

Test: ap biology exam free response questions. Name: Score: 22 Multiple choice questions. Definition. Specific heat is the amount of heat required to raise the temperature of 1 gram of a substance 1 degree C. Because water has a high specific heat, oceans resist changes in temperature and provide a stable environmental temperature for organisms ...This unit test follows the updated curriculum published by the College Board for AP Biology. This test covers all of the content for AP Bio unit 2, Cell Structure and Function. It contains 30 stimulus based multiple choice questions and three free response (FRQ) questions that model the AP exam. These questions are NOT on AP Classroom and will ...AP BIOLOGY: CHAPTER 40, 41, 42. A) would require an elaborate experimental design to answer. B) is difficult to answer because a large experimental area would be required. C) is difficult to answer because a long-term experiment would be required. D) is a question that a present-day ecologist would be likely to ask.AP® Biology 2003 Free-Response Questions. The materials included in these files are intended for use by AP teachers for course and exam preparation; permission for any other use must be sought from the Advanced Placement Program®. Teachers may reproduce them, in whole or in part, in limited quantities for noncommercial, face-to-face teaching ...Sample: 3A Score: 4. The response earned 1 point in part (a) for identifying the mitochondria. The response earned 1 point in part (b) for making a claim that PDC deficiency does not change the amount of NADH produced by glycolysis and providing reasoning that “the PDC-catalyzed reaction occurs after glycolysis.”.Using the diagram, (a) Explain how paper chromatography can be used to separate pigments based on their chemical and physical properties. (4 points maximum) Separation property 2 points maximum. Relationship to movement 2 points maximum. Solubility in solvent used. Greater solubility further movement.

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Circling (1 point) • Correctly circled out-group based on orientation of cladogram. (c) A student claims that mitochondrial DNA sequence comparisons provide a more accurate phylogeny of bear species than do LYST protein sequence comparisons. Provide ONE piece of reasoning to support the student's claim.A signal-emitting cell communicates with a nearby cell through direct cell-to-cell contact. Do 4 problems. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.Sample: 3A Score: 4. The response earned 1 point in part (a) for identifying the mitochondria. The response earned 1 point in part (b) for making a claim that PDC deficiency does not change the amount of NADH produced by glycolysis and providing reasoning that “the PDC-catalyzed reaction occurs after glycolysis.”.Cram for AP Biology Unit 7 - Topic 7.5 with study guides and practice quizzes to review Allele frequencies, Genetic equilibrium, ... To solve this question, you would first assign the frequency of the recessive allele, "a", as "q" and the frequency of the dominant allele, "A", as "p". Since "A" and "a" are codominant, the sum of p and q is ...Questions 3-8 are short free-response questions that require about 6 minutes each to answer. Questions 3-5 are worth 4 points each and questions 6-8 are worth 3 points each. Read each question carefully and completely. Write your response in the space provided for each question. Only material written in the space provided will be scored.

Study with Quizlet and memorize flashcards containing terms like (Unit 3) Describe the role of oxygen in cellular respiration., (Unit 3) Describe the relationship between the concentration of glucose in the culture medium and the ATP concentration in the cells., (Unit 3) In a further experiment, the researchers add a compound to the cell …Sample: 8A Score: 3. The response earned 1 point in part (a) for describing the characteristic of the plasma membrane as having a middle region made of hydrophobic tails. The response earned 1 point in part (b) for explaining that antibodies are unable to cross the plasma membrane. The response earned 1 point in part (b) for explaining that ...AP Biology FRQ: This exam’s FRQs test students’ knowledge about biology topics such as cell structure and genetics. An example FRQ might ask students to describe the role that DNA plays in protein synthesis within cells. AP Chemistry FRQ: This exam covers topics like atomic structure and chemical reactions.FRQ Practice Submission 2. a) The most likely gene to encode a protein that is an essential component of glycolysis is gene G. The reasoning is that it is the only Gene that is actively producing mRNA in all tissues. b) Just because the gene is present does not mean it is being translated and transcribed. It is most likely methylated, or super ...AP ® Biology 2021 Scoring Commentary . Question 3 . Note: Student samples are quoted verbatim and may contain spelling and grammatical errors. Overview . This question described an experiment in which mammalian muscle cells were treated with resveratrol dissolved in dimethyl sulfoxide (DMSO).Directional Selection and Body Mass of White-tailed Deer. 1.B, 6.D, ENE-1, 7 more... Original free-response prompts for AP® Biology that mimic the questions found on the real exam. Our expert authors also provide an exemplary response for each AP free response question so students can better understand what AP graders look for.Questions And Worked Solutions For AP Biology 2018 Exam. AP Biology 2018 Free Response Questions - Complete Paper (pdf) 2018 AP Biology Free Response Questions 1 - 8 Solutions. Polar bears are highly adapted for life in cold climates around the North Pole. …. Some pathogenic bacteria enter cells, replicate, and spread to other cells, causing ...AP® Biology Free Response Review: 11 Tips. We wrote a comprehensive guide complete with videos on how to answer AP® Biology free response questions here. 1. Know the FRQ format. At the start of the AP® Bio free-response section of the exam, you will be given a 10-minute reading and planning period.AP Physics C EM; AP Physics C Mechanics; AP Biology; AP Chemistry; AP Calculus AB; AP Calculus BC; A Level Menu Toggle. A Level Math (9709) A level Bio (9700) iGCSE Menu Toggle. iGCSE Physics (0625) iGCSE Biology (0610) SAT Menu Toggle. SAT New Math; SAT English; KS 1-4 Menu Toggle. Year 2; Year 3; Year 4; Join/LoginThe primary role of oxygen in cellular respiration is to. A) yield energy in the form of ATP as it is passed down the respiratory chain. B) act as an acceptor for electrons and hydrogen, forming water. C) combine with carbon, forming CO₂. D) combine with lactate, forming pyruvate. Visit College Board on the web: collegeboard.org. AP® Biology 2021 Scoring Commentary. Question 1 (continued) response earned 1 point in part (d) for explaining ouabain causes the signaling pathway, which stimulates transcription of target genes (cyclin genes) involved in cell growth and division as shown in Figure 1 (cell number). Use your time wisely. You will have 50 minutes to complete the FRQ portion of the AP Psychology exam. You can answer the two questions in any order. The most efficient use of your time will be to start by answering the parts of the questions in which you feel most confident, earning you the most points in the shortest time.

All of the AP Psychology free response questions that were given from 1999 through 2018. Also includes scoring guidelines, scoring statistics, and sample responses. Attacking an FRQ

BIOLOGY. Section II Total Time—1 hour and 30 minutes Reading Period—10 minutes Writing Period—1 hour and 20 minutes 8 Questions. Directions: Questions 1 and 2 are long free-response questions that require about 22 minutes each to answer and are worth 10 points each.Look through all of the available Unit 1 Resources. ⏱ The AP Biology exam has 6 free-response questions, and you will be given 90 minutes to complete the FRQ section. (This means you should give yourself ~15 …2003 AP Biology Sample Student Responses Question 1. AP®Biology 2003 Sample Student Responses. These materials were produced by Educational Testing Service®(ETS ), which develops and administers the examinations of the Advanced Placement Program for the College Board. The College Board and Educational Testing Service (ETS) are …Sample: 2A. Score: 9. The response earned 1 point in part (a) for describing that the inner mitochondrial membrane " is used for the electron transport chain.". The response earned 1 point in part (b) for constructing a graph containing appropriate axis labels and legend.Directions: Questions 1 and 2 are long free-response questions that require about 25 minutes each to answer. Questions 3 through 6 are short free-response questions that require about 10 minutes each to answer. Read each question carefully and completely. Answers must be written out in paragraph form.1. Read each question carefully. Write your response in the space provided for each part of each question. Answers must be written out in paragraph form. Outlines, bulleted lists, or diagrams alone are not acceptable and will not be scored. The Tasmanian devil (Sarcophilus harrisii) is a species of mammal whose only wild populationAntiphospholipid syndrome (APS) is an autoimmune disorder that involves frequent blood clots (thromboses). When you have this condition, your body's immune system makes abnormal pr...AP Physics C EM; AP Physics C Mechanics; AP Biology; AP Chemistry; AP Calculus AB; AP Calculus BC; A Level Menu Toggle. A Level Math (9709) A level Bio (9700) iGCSE Menu Toggle. iGCSE Physics (0625) iGCSE Biology (0610) SAT Menu Toggle. SAT New Math; SAT English; KS 1-4 Menu Toggle. Year 2; Year 3; Year 4; Join/Login

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AP Biology 2021-2022 Semester 1 Final Exam (FRQ) Describe the transfer of energy that occurs in the reaction shown in Figure 1. Click the card to flip 👆. Fructose 6 phosphate (F6P) turns into fructose 1,6 bisphosphate (FBP) by using one ATP in the presence of PFK. The change from ATP to ADP is caused by phosphorylation in the cell."The 2023 AP Biology free-response questions are now available: https://t.co/MIhfXqWFTO #APExams"Directions: Questions 1 and 2 are long free-response questions that require about 25 minutes each to answer. Questions 3 through 6 are short free-response questions that require about 10 minutes each to answer. Read each question carefully and completely. Answers must be written out in paragraph form.In the multiple choice section of the AP Biology test, you will have 90 minutes to answer 60 multiple choice questions and 6 grid-in items. The multiple choice questions are composed of two types of questions, stand alone and data questions. Below we provide practice questions for each type and strategies to find the correct answer in the ...Practice Submission 5. (a) I predict that 75% of F1 offspring will be phenotypic male. (b) The genotype of the male parent is Z*W. One fitness cost is that each offspring have a 25% chance of not having any type of Z chromosome, which would make the offspring have a 0% chance of survival.AP Biology - Evolution Unit Practice Exam. Multiple Choice. Identify the choice that best completes the statement or answers the question. ____ 1) Catastrophism, meaning the regular occurrence of geological or meteorological disturbances (catastrophes), was Cuvier's attempt to explain the existence of. A) evolution.Practice Online AP Biology : 6.8 Biotechnology- Exam Style questions with Answer- FRQ , Prepared by AP Biology TeachersQuestion 1. Trichomes are hairlike outgrowths of the epidermis of plants that are thought to provide protection against being eaten by herbivores (herbivory). In a certain plant species, stem trichome density is genetically determined. To investigate variation in stem trichome density within the plant species, a student counted the number of ...Visit the College Board on the Web: www.collegeboard.com. AP® BIOLOGY 2009 SCORING COMMENTARY. Question 3 (continued) In part (b) the response earned the maximum of 4 points. A point was earned for the tree, which, although not completely accurate, has a common ancestor and the species branches in the correct order.AP® BIOLOGY. 2016 SCORING COMMENTARY. Question 1. Question 1 was written to the following Learning Objectives in the AP® Biology Curriculum Framework: 1.1, 2.24, 2.28, 4.19, 4.25, and 4.26. Overview. This question was based on an investigation of the effects of salinity on the frequency of a specific allele of.A. Yeast and mammals share a recent common ancestor. B. Early versions of cell communication mechanisms still used today must have evolved before the first multicellular organisms. C. Signaling molecules first evolved in multicellular eukaryotes. D. All cell communication systems are used for sexual reproduction. Question 2. ….

AP Biology. Exam Skills. 2016 FRQ Review. 2016 FRQ Review. april 15, 2020. rachel-aguilar. ... FRQ practice from the 2016 FRQs. In this stream we practice and review question 1, 2, 4, and 7. There are also strategies on how to approach each FRQ included. In this video we discuss gene expression, graphs, meiosis, bacteria, mussels, osmosis and ...There are four questions in the free-response section. Therefore, you will have approximately 20 minutes to complete each question. You will also have 10 minutes at the beginning to brainstorm your answers. The questions below are from previous AP Biology exams and pertain to Biochemistry. Allow yourself 20 minutes to complete all parts of the ...2011 The College Board. AP® BIOLOGY 2011 SCORING GUIDELINES. Question 2 (continued) (c) Plants have a variety of mechanisms for obtaining nutrients. Describe TWO plant structures and explain how each structure is utilized in nutrient uptake. (4 points maximum) Root. Root hairs. Leaf.AP® Biology. Looking for an AP® Biology score calculator? Click here for this and more tips for your test! Review the processes and principles behind living organisms and their ecosystems through exam prep practice questions on scientific inquiry and models in Albert's AP Biology prep course.2011 The College Board. AP® BIOLOGY 2011 SCORING GUIDELINES. Question 2 (continued) (c) Plants have a variety of mechanisms for obtaining nutrients. Describe TWO plant structures and explain how each structure is utilized in nutrient uptake. (4 points maximum) Root. Root hairs. Leaf.2011 The College Board. AP® BIOLOGY 2011 SCORING GUIDELINES. Question 2 (continued) (c) Plants have a variety of mechanisms for obtaining nutrients. Describe TWO plant structures and explain how each structure is utilized in nutrient uptake. (4 points maximum) Root. Root hairs. Leaf.Figure 1. The effect of developmental stage, sex, and cell type on the Cq value of four housekeeping genes. 2023 College Board AP® Biology 2023 Scoring Guidelines. Based on the data in Figure 1, identify the gene that had the lowest median Cq value when bees of different developmental stages were compared. RPS5.In this video, we'll unpack a sample free-response question—FRQ (Question 3: Scientific Investigation).Download questions here: https://tinyurl.com/mvec82w6S...AP ® Biology 2021 Scoring Commentary . Question 4 . Note: Student samples are quoted verbatim and may contain spelling and grammatical errors. Overview . This question described the establishment of a hybrid lineage of finches, dubbed "Big Bird," on the Galápagos island Daphne Major.Question 2. There are several emergent properties of water that contribute its powerful affect on living organisms. These emerging properties are mostly due to: A. The abundance of water on Earth. B. The hydrogen bonds linking water molecules together. C. Water's ability to moderate pH. Ap biology frq questions, The AP Biology Exam assesses student understanding of the science practices and learning objectives outlined in the course framework. The exam is 3 hours long and includes 60 multiple-choice questions and 6 free-response questions. A four-function, scientific, or graphing calculator is allowed on both sections of the exam., Practice Online AP Biology : 6.5 Regulation of Gene Expression- Exam Style questions with Answer- FRQ , Prepared by AP Biology Teachers, Practice Online AP Biology : 7.1 Introduction to Natural Selection - Exam Style questions with Answer- FRQ , Prepared by AP Biology Teachers, This is a modified version of the 2013 AP Biology Exam. This practice exam is provided by the College Board for AP Exam preparation. Exams may not be posted on school or personal websites, nor electronically redistributed for any reason. Teachers are permitted to download the materials and make copies to use with the students in a classroom ..., Graph 1 point each (3 points maximum) Calculation (1 point maximum) • Correct orientation of the independent (time) and dependent (maltose) variables. • Correct display of units and intervals. (scale and labels) • Correct graphing of. all. data points on a properly scaled and oriented graph. (0–60 minutes), Q1 A: Describe anatomical structure's response to light- a motor neutron. transmits signal from the brain to an effector. Q1 B: Describe the mouse's activity period during L12 and D 12. active during dark phase and inactive during light phase. Q1 D: describe one difference with support between the daily pattern of activity L12D12 conditions and ..., Student Performance Q&A: 2011 AP® Biology Free-Response Questions. The following comments on the 2011 free-response questions for AP® Biology were written by the Chief Reader, John Lepri of the University of North Carolina Greensboro. The comments provide an overview of each free-response question and of how students performed on the., For Section II, the AP Biology free-response section, you'll have 80 minutes (after the reading period) to answer six questions. You will likely spend more time on each of the two long free-response questions than on each of the four short-response questions. A fair balance is 22 minutes per long free-response question and 9 minutes per short ..., Mechanisms that lead to the development of separate species from a common ancestor. point each) Geographic isolation (or allopatric speciation) takes place when a population of one species becomes physically separated by some geographic barrier such as a river, mountain range, etc. Long-term isolation of two populations eventually leads to ..., Good morning, Quartz readers! Good morning, Quartz readers! A$AP Rocky awaits his verdict. The American rapper, whose real name is Rakim Meyers, was detained and charged with assau..., AP Biology. Exam Skills. Unit 5 FRQ (Phenotypes) with Feedback. Unit 5 FRQ (Phenotypes) with Feedback. 4 min read • november 17, 2021. Caroline Koffke. Caroline Koffke. AP Bio Free Response Question for Phenotypes. Be sure to read carefully, and notice how this pattern of inheritance is different from our own. ..., Directions: Questions 1 and 2 are long free-response questions that require about 22 minutes each to answer and are worth 10 points each. Questions 3 – 8 are short free-response questions that require about 6 minutes each to answer. Questions 3 – 5 are worth 4 points each and questions 6 – 8 are worth 3 points each., Q-Chat. Study with Quizlet and memorize flashcards containing terms like What are the characteristics of enzymes?, What are the functions of enzymes?, What is the relationship between the energy of the reactants and the energy of the products? and more., 2012 AP. BIOLOGY FREE-RESPONSE QUESTIONS. -4-. 4. The element carbon is contained in all organic compounds. (a) Discuss. the role of photosynthesis and cellular respiration in carbon cycling in the biosphere. (b) For THREE of the following, , FRQ Practice Submission 5. a) Gene G most likely codes for glycolysis. All of the cells exhibit this gene as shown in the chart. Because glycolysis is essential in all cells, this suggests that this is the gene that codes for glycolysis. b) Gene H was most likely an intron that got removed during RNA splicing., This is a modified version of the 2013 AP Biology Exam. This practice exam is provided by the College Board for AP Exam preparation. Exams may not be posted on school or personal websites, nor electronically redistributed for any reason. Teachers are permitted to download the materials and make copies to use with the students in a classroom ... , Explain the adaptive (evolutionary) value(s) of the structural examples you described in part a. 4. The following experiment was designed to test whether different concentration gradients affect the rate of diffusion. In this experiment, four solutions (0% NaCl, 1% NaCl, 5% NaCl , and 10% NaCl) were tested under identical conditions., The pyruvate dehydrogenase complex (PDC) catalyzes the conversion of pyruvate to acetyl-CoA, a substrate for the Krebs (citric acid) cycle. The rate of pyruvate conversion is greatly reduced in individuals with PDC deficiency, a rare disorder. (a) Identify the cellular location where PDC is most active. , Free Response. Assessments. Overview. Unit 1 | Chemistry of Life. Long Free Response. 1 question. On Fertile Ground. 1.B, 2.A, 6.E.b, 9 more... Unit 2 | Cell Structure and …, AP® Biology 2003 Scoring Guidelines. The materials included in these files are intended for use by AP teachers for course and exam preparation; permission for any other use must be sought from the Advanced Placement Program®. Teachers may reproduce them, in whole or in part, in limited quantities for noncommercial, face-to-face teaching purposes., Question 1 Question 1 was written to the following Learning Objectives in the AP ® Biology Curriculum Framework: 1.1, 2.24, 2.28, 4.19, 4.25, and 4.26. Overview This question was based on an investigation of the effects of salinity on the frequency of a specific allele of a leucine aminopeptidase gene (lap 94, This year's AP exams are all free response and no multiple choice, including the AP Biology exam. Of course, this means that students taking the AP Biology exam should focus on doing free …, 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. Exam Duration. 3hrs., Overview. We’ve compiled a list of a bunch of the AP Biology past prompts! The AP Bio FRQs are 60% of the exam including 2 long questions and 4 short questions. It’s …, Download free-response questions from past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at [email protected]., Connection for AP. ®. Courses. Proteins are long chains of different sequences of the 20 amino acids that each contain an amino group (-NH 2 ), a carboxyl group (-COOH), and a variable group. (Think of how many protein "words" can be made with 20 amino acid "letters"). Each amino acid is linked to its neighbor by a peptide bond formed ..., solute potential. The water potential will be equal to the solute potential of a solution in an open container because the pressure potential of the solution in an open container is zero. The Solute Potential of a Solution. Y. S. i. = ionization constant (1.0 for sucrose because sucrose does not ionize in water) C. , Mike Anderson and Ovie Faruq offloaded their collection of 72 NFTs for $9.25 million this week, according to OpenSea data. Jump to Two former Barclays junk bond traders reportedly ..., AP Bio with Mr. Gillibert, Unit 2--- chapter 6 and 48 Learn with flashcards, games, and more — for free. ... AP Biology Unit 2. 9 terms. srmooneyhan. Preview. Unit 2 AP BIO FRQ. 14 terms. chernande255. Preview. MMG 409 Cell Signaling. 72 terms. aharlock. Preview. Physiology Exam Two. 86 terms. maggie_j_frisch. Preview. Anatomy and physiology ..., AP® Biology 2009 Free-Response Questions The College Board The College Board is a not-for-profit membership association whose mission is to connect students to college success and opportunity. Founded in 1900, the association is composed of more than 5,600 schools, colleges, universities and other educational organizations., Directions: Questions 1 and 2 are long free-response questions that require about 22 minutes each to answer and are worth 10 points each. Questions 3 – 8 are short free-response questions that require about 6 minutes each to answer. Questions 3 – 5 are worth 4 points each and questions 6 – 8 are worth 3 points each. , 8 Questions. Directions: Questions 1 and 2 are long free-response questions that require about 22 minutes each to answer and are worth 10 points each. Questions 3-8 are short free-response questions that require about 6 minutes each to answer. Questions 3-5 are worth 4 points each and questions 6-8 are worth 3 points each., AP® Biology 2022 Scoring Guidelines. Question 1: Interpreting and Evaluating Experimental Results with Experimental Design. 9 points. The binding of an extracellular ligand to a G protein-coupled receptor in the plasma membrane of a cell triggers intracellular signaling (Figure 1, A). After ligand binding, GTP replaces the GDP that is bound to.