Ap biology unit 3 practice test

Free-Response Questions. 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 ssd@info ...

The best way to become effective at test-taking is by answering lots and lots of AP® Biology exam practice questions because practice makes perfect! Use the AP® Biology exam practice questions provided by the College Board, the Albert AP® Biology exam practice questions for each unit, as well as unit assessments to support your …Researchers hypothesize that the plant compound resveratrol improves mitochondrial function. To test this . hypothesis, researchers dissolve resveratrol in dimethyl sulfoxide (DMSO). The solution readily passes through cell membranes. They add the resveratrol solution to mammalian muscle cells growing in aAp Biology Practice Test Answer Key - Myilibrary.org. Biology Test Practice Book. A. Cellular Structure and Function (16-17%) 1. Biological compounds 2. Enzyme activity, receptor binding, and regulation 3 The number of questions you answered correctly on the whole test and on each content area are converted to the scaled total score and the ...May 10, 2023 · Subject. 🧬 AP Biology. Study Guides by Unit. 🧪 Unit 1 – Chemistry of Life. 🧬 Unit 2 – Cell Structure & Function. 🔋 Unit 3 – Cellular Energetics. 🦠 Unit 4 – Cell Communication & Cell Cycle. 👪 Unit 5 – Heredity. 👻 Unit 6 – Gene Expression & Regulation. Share your videos with friends, family, and the worldQuestion 1 1. What is a population? A group of organisms of the same species that live together and function as a unit. All of the individual organisms belonging to the same species within a ...

Genetic variation is usually increased by meiosis. Take up this comprehensive test on Mendelian genetics and Meiosis process and get to learn more about human genetics. Have fun! Questions and Answers. 1. The following human pedigree shows the inheritance of the recessive trait for albinism.Terms in this set (54) Which perspective highlights the reproductive advantages of inherited psychological traits. evolutionary. We have an expert-written solution to this problem! Who would have been most likely to ignore her mental processes and define psychology as the scientific study of observable behavior. John B Watson.May aid in the transport of materials from one side of the membrane to the other. B. Membrane proteins of adjacent cells may hook together in various kinds of junctions. C. May be an enzyme or series of enzymes involved in metabolic pathways. D. May be a membrane carbohydrate used for cell-to-cell recognition. Question 15. A) Evidence that some of the earliest eukaryotes used oxygen to produce ATP by cellular respiration. B) Evidence that the earliest plants produced oxygen as a by-product of photosynthesis. C) Evidence that some of the earliest organisms carried out photosynthesis without producing oxygen.AP BIOLOGY EXAM: 3 Hours Assessment Overview 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 ...The final AP Biology Review.Do you speak another language? Help me translate my videos:http://www.bozemanscience.com/translations/Music AttributionTitle: St...AP Biology: Unit – 1 - Ecology Practice Test Question 1 An individual belonging to a specific species A. Biotic B. Community C. Organism D. Reptile Question 2 All of the living and nonliving things in an area that interact with each other are called a/an _____. A. community B. habitat C. population D. ecosystem Question 3May 10, 2023 · Study Guides by Unit. 🧪 Unit 1 – Chemistry of Life. 🧬 Unit 2 – Cell Structure & Function. 🔋 Unit 3 – Cellular Energetics. 🦠 Unit 4 – Cell Communication & Cell Cycle. 👪 Unit 5 – Heredity. 👻 Unit 6 – Gene Expression & Regulation. 🦍 Unit 7 – Natural Selection. 🌲 Unit 8 – Ecology.

Click here for the practice questions: AP Bio Unit 3 Multiple Choice Questions. Image courtesy of Pixabay Facts about the test : The AP Biology exam has 60 multiple choice questions and you will be given 1 hour 30 minutes to complete the section.Ap bio unit 3. 1) the functions of proteins in membranes. Click the card to flip 👆. -relay signals between cells and other cells or the enviroment. -move molecules and ions across the membrane. Click the card to flip 👆.The AP Biology Exam is 3 hours long and is divided into two sections: Section I (multiple-choice questions) and Section II (free-response questions). The AP biology exam assesses content from each of four big ideas for the course:BACK. ap test study guides AP Biology Test Study Guides Unit 1 Chemistry of Life Practice Quiz Unit 2 Cells Practice Quiz Unit 3 Cellular Energetics Practice Quiz Unit 4 Heredity Practice Quiz Unit 5 Molecular Genetics Unit 5A Chapters 16 & 17 Practice Quiz Unit….

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Study Guides by Unit. 🧪 Unit 1 – Chemistry of Life. 🧬 Unit 2 – Cell Structure & Function. 🔋 Unit 3 – Cellular Energetics. 🦠 Unit 4 – Cell Communication & Cell Cycle. 👪 Unit 5 – Heredity. 👻 Unit 6 – Gene Expression & Regulation. 🦍 Unit 7 – Natural Selection. 🌲 Unit 8 – Ecology.AP BIOLOGY EXAM: 3 Hours Assessment Overview 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 ...Are you looking to improve your typing speed and accuracy? Look no further. With the advent of technology, there are numerous online resources available that offer free typing test practice. These resources can help you enhance your typing ...AP Biology: Unit - 1 - Ecology Practice Test. Question 1 An individual belonging to a specific species A. Biotic B. Community C. Organism D. Reptile. Question 2 All of the living and nonliving things in an area that interact with each other are called a/an _____. A. community B. habitat C. population D. ecosystem. Question 3 An area where an organism finds food, shelter and water in a ...Share your videos with friends, family, and the world

5) lagging strand grows in 3' to 5' direction away from the replic­ation fork by the addition of okazaki fragments 6) DNA ligase seals together okazaki fragments (short segments of DNA that grow 5' to 3' that are added onto the lagging strand)Hazleton Area School District / Overview The increase in atmospheric CO2 resulted in a greater increase in plant growth under stressed conditions than under ideal conditions. Study with Quizlet and memorize flashcards containing terms like Figure 1 represents a segment of DNA. Radiation can damage the nucleotides in a DNA molecule. To repair some types of damage, a single nucleotide ...Part IV: Sample Test • The format of the exam is changing beginning in 2012–2013. The sample test more accurately reflects the types of questions students may encounter. It will be very important for stu-dents to practice with these types of questions throughout the year. • Grid-in questions are included in the sample test.Are you preparing to take the Duolingo English Practice Test? If so, you’ll want to make sure you’re as prepared as possible. Here are some top tips to help you get ready for your test.The bundle here is all eight of my unit quizzes that I use to assess my students before unit tests or before the AP exam.They are 100% aligned with the newest AP Biology curriculum released by the College Board.There is one quiz for every unit: chemistry of life, cellular structure & function, cAP BIO UNIT 3 EXAM Flashcards Quizlet ap bio unit exam leave the first rating terms in this set (58) what is the term for metabolic catabolic pathways pathways ... Principles of Biology Unit 3 Exam Flashcards Quizlet; Other related documents ... Chapter 20 Review Questions; Chem 1412 Final Sample Questions; exam practice questions and answers ...You will find our ' AP Biology Chapter 8 Practice Test ' super helpful. Ap classes can be challenging; hence, preparing well in advance is necessary. Our quiz is designed to test your knowledge of various course topics. The quiz can be an excellent way to prepare for your AP class examinations.The Science Practice Challenge Questions contain additional test questions for this section that will help you prepare for the AP exam. These questions address the following standards: [APLO 2.1][APLO 2.2][APLO 2.4][APLO 4.16][APLO 2.3]

Aug 25, 2023 · Correct Answer. A. Hydronium Ions (H3O+) Explanation. Hydronium ions (H3O+) can supplement for H+ ions because they are formed when a water molecule (H2O) gains an extra proton (H+). This proton is then attached to the oxygen atom in the water molecule, resulting in the formation of a hydronium ion.

B. Biodiversity. C. Acid rain. D. Habitat fragmentation. Question 2. In the 1950s, scientists began observing a decline in the populations of certain bird species such as pelicans, ospreys and eagles. They found an accumulation of DDT in the tissues of the birds, which interfered with calcium deposits in their eggshells, rendering them weak.May aid in the transport of materials from one side of the membrane to the other. B. Membrane proteins of adjacent cells may hook together in various kinds of junctions. C. May be an enzyme or series of enzymes involved in metabolic pathways. D. May be a membrane carbohydrate used for cell-to-cell recognition. Question 15.AP Biology Exam 1: The Chemistry of Life Name_____ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Matter A) has mass. B) All of the choices are correct. C) occupies space. D) is what life is composed of. E) is composed of elements. 1) 2) A compoundworth 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. You are advised to spend the 10-minute reading period planning your answers.Organize your answers as clearly and neatly as possible. You might want to label your answers according to the sub-part, such as (a), (b), (c), etc. This will assist you in organizing your thoughts, as well as helping to ensure that you answer all the parts of the free-response question. You should include the proper units for each number where ...AP Classroom is a platform that helps you prepare for the AP Biology exam with unit 3 practice assessment homework. Click here to access the homework, review the topics and skills, and watch AP Daily videos for additional support.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. ... Course: AP®︎/College Biology > Unit 3. Lesson 4: Photosynthesis. Photosynthesis. Intro to ...1 / 23 The electronegative atom is reduced Click the card to flip 👆 Flashcards Learn Test Match Created by sarahbrown619 Terms in this set (23) When electrons move closer to an electronegative atom The electronegative atom is reduced ATP made in glycolysis comes from Substrate level phosphoriliationWelcome to Unit 1 AP Biology Multiple Choice Questions! Grab some paper and a pencil 📄 to record your answers as you go. You can see how you did on the Unit 1 Practice Questions Answers and Review sheet once you're done. Don't worry, we have tons of resources available if you get stumped 😕 on a question.

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Cellular energetics is the study of the production, distribution, and use of energy in cells. In the context of AP Biology, cellular energetics typically refers to the production of ATP (adenosine triphosphate) through cellular respiration and photosynthesis. In cellular respiration, glucose is broken down through a series of reactions to ...Practice Questions. ... 2024 AP Biology Exam Guide. ... AP Biology Cram Unit 3: Cellular Energetics. written by Jessica Nadzam. AP Cram Sessions 2020. Unit 1 - Chemistry of Life. written by Caroline Koffke. Unit 1 - Chemistry of Life Slides. written by Caroline Koffke.AP Bio Unit 5 Practice Test. 96 terms. traceyjaron. AP Biology: Unit 6 exam. 36 terms. Kiara_Mauriello. Other sets by this creator. Elliston FSN 250 Presentation Final Questions. 51 terms. michaelmosc. Chapter 11 GOV words. 11 terms. michaelmosc. Chapter 3 Gov words. 21 terms. michaelmosc. Chapter 2 GOV words. 26 terms.Free Support in All AP Subjects & Live Stream Reviews | Fiveable. Cram Mode. Guides. Practice. Events. Rooms | Login. Get cheatsheets. Light. Light. Study guides for every unit Learn exactly what you need to know for every AP exam 😆 ... AP Biology. 🧪. …In the context of AP Biology, cellular energetics typically refers to the production of ATP (adenosine triphosphate) through cellular respiration and photosynthesis. In cellular respiration, glucose is broken down through a series of reactions to produce ATP, which is then used by cells to power various cellular processes. 1 pt. Mike has four aquatic plants of the same size and the same species. He submerges the plants in a separate beaker filled with 200 ml of water. She then sets each beaker under a different intensity of light. Mike observes that, of the four plants, the plant in the beaker under the most intense light gives off the most gas bubbles in a 20 ...Ap Biology Practice Test Answer Key - Myilibrary.org. Biology Test Practice Book. A. Cellular Structure and Function (16-17%) 1. Biological compounds 2. Enzyme activity, receptor binding, and regulation 3 The number of questions you answered correctly on the whole test and on each content area are converted to the scaled total score and the ...AP bio unit 1 practice questions? ... Additional comment actions. I got you! I have a 316 page review guide for AP Biology (plus review PowerPoints and quizizz games) AP Bio Penguins 21-22 Review Guide. Reply ... Ohio Class 3 ABC study guides and practice tests.AP Biology Course and Exam Description. This is the core document for this course. It clearly lays out the course content and describes the exam and the AP Program in general. The CED was updated in the summer of 2020 to include scoring guidelines for the example questions. PDF. ….

AP Biology Unit 3 FRQ Exam Prep. 20 terms. auntieem5. AP Biology Unit 3 Cellular Energetics. 25 terms. vallerycontreras26. AP Biology | Unit 4 MCQ Practice Questions ...The relationship of structure to function is one of the major themes In biology. For three of the following structure/function pairs, describe the structure and then explain how the function is related to the structure. (a) Enzyme structure/catalysis (4 points maximum) Description (2 points) 3-D shape that results from folding of polypeptide chainsAP® Biology | Unit 8 Assessment. This assessment tests standards from Unit 8 only. A four-function calculator should be available for you to use while taking this assessment. 23 questions. Not started. Review the processes and principles behind living organisms and their ecosystems through exam prep practice questions on scientific inquiry and ...B. Cells divide one time in the cell cycle. Cells divide two times in meiosis. C. The cell cycle produces cells genetically identical to the parent cell. Meiosis produces cells genetically different from the parent and from each other. D. In the cell cycle, crossing over takes place during metaphase.This year, all AP exams will cover all units and essay types. The 2024 Biology exam format will be: Multiple Choice - 50% of your score. 60 questions in 1 hour 30 minutes. Individual questions. Sets of questions with 4-5 questions per set. Free Response - 50% of your score. 6 Questions in 1 hour 30 Minutes. 2 long questions worth 8-10 points each.Tia25Maria. AP Biology Unit 3: Cellular Energetics Topics - Enzyme Structure, Enzyme Catalysis, Environmental Impacts on Enzyme Function, Cellular Energy, Photosynthesis, Cellular Respiration, Fitness Directions - For each question, choose the best answer (unless otherwise stated) Test Period - You have 30 minutes to answer 40 questions. 1.This quiz is to test your knowledge on Chapter 1 of A. P. Biology. Chapter 1 will be on Test #1, which fill feature Chapters 1-4. As such, it is suggested that you also take the quizzes for Chapters 2-4 if you are using this to study. To begin, type your name in the box below and click the green button.A difference in the concentration of a substance across a distance. membrane potential. The voltage of a plasma membrane. thermoregulation. Process of maintaining an internal temperature within a tolerable range. Study with Quizlet and memorize flashcards containing terms like entropy, endergonic reaction, exergonic reaction and more.Nov 22, 2022 · AP Biology Free Practice Question #3. In an emergency, a doctor can replace a patient’s blood plasma with a solution of 5% human albumin and 0.9% NaCl. A pharmacist does not have ready-made 5% albumin solution and decided to use a 25% albumin solution instead. He mixed 1 part of the 25% solution with 4 parts of sterile distilled water. AP Biology Unit 3-Cells (Chapters 6&7) Practice Test 1. Which of the following is true of both mitochondria and chloroplasts? (A)They are found in the cells of eukaryotic autotrophs and heterotrophs (B)They include stacks of membranes that absorb light (C) They include compartments where hydrogen ions are concentrated (D)They produce sugars using energy harvested in the cytoplasm (E) They ... Ap biology unit 3 practice test, AP®︎/College Biology 10 units · 54 skills. Unit 1 Chemistry of life. Unit 2 Cell structure and function. Unit 3 Cellular energetics. Unit 4 Cell communication and cell cycle. Unit 5 Heredity. Unit 6 Gene expression and regulation. Unit 7 Natural selection. Unit 8 Ecology., Practice Questions. ... Put your AP Bio: Unit 1 knowledge to the test!Understand what topics you need to study more. Start Quiz. Additional Resources. Study Tools. Download the 2024 AP Biology Cheat Sheet PDF. 1 min read. 2024 AP Biology Exam Guide., Get Albert's free 2023 AP® Biology review guide to help with your exam prep here. Find out more! 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., Practice Questions. ... Put your AP Bio: Unit 7 knowledge to the test!Understand what topics you need to study more. Start Quiz. Additional Resources. ... AP Biology Cram Unit 3: Cellular Energetics. written by Jessica Nadzam. See All (26) AP Cram Sessions 2020. Unit 1 - Chemistry of Life., What We Review The 6 Science Practices AP® Biology Promotes The Big Ideas of AP® Biology AP® Biology Practice Tests Unit 1: Chemistry of Life Unit 2: Cell Structure and Function Unit 3: Cellular …, May 10, 2023 · Study Guides by Unit. 🧪 Unit 1 – Chemistry of Life. 🧬 Unit 2 – Cell Structure & Function. 🔋 Unit 3 – Cellular Energetics. 🦠 Unit 4 – Cell Communication & Cell Cycle. 👪 Unit 5 – Heredity. 👻 Unit 6 – Gene Expression & Regulation. 🦍 Unit 7 – Natural Selection. 🌲 Unit 8 – Ecology. , Learn AP Biology using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of biochemistry, cell biology, genetics, evolution, and ecology, …, 18 AP Biology Unit 7 Evolution quiz for KG students. Find other quizzes for Biology and more on Quizizz for free!, AP Review Guide Practice Exam. AP Review Calendar (2022-2023) CollegeBoard Released Practice Exam (2013) ... CED Topic TikToks. Unit 1. Unit 2. Unit 3. Unit 4. Unit 5. Unit 6. Unit 7. Unit 8 . 2022-2023 Sessions: Session 1: How to Succeed in AP Biology Session 2: Introduction to Free Response Session 3: Midterm Content Review ... AP Hacks Unit ..., Bozeman Biology Unit 1 review-Natural selection Unit 2 Review- Speciation Unit 4 Review- Homeostasis Unit 5 review-Genetics Starts with G Starts with C ... AP BIO PRACTICE EXAM HW STUDY STUDY STUDY REVIEW ANSWERS USE YOUR ALBERT LOGIN FOR SOME AP BIO PRACTICE. 3 days until the AP BIO EXAM:, The ψ of a region is calculated by adding the solute potential (ψs) and the pressure potential (ψp). The ψs will be 0 or negative, and the ψp will be positive, 0, or negative. The ψ will always be negative. Calculate the water potential for region A and region B. Then, state which region water will go towards., AP Biology Unit 4: Cell Communication & Cell Cycle Topics - Cell Communication, Introduction to Singal Transduction, Singal Transduction, Changes to Signal Transduction Pathways, Feedback, Cell Cycle, Regulation of Cell Cycle Directions - For each question, choose the best answer (unless otherwise stated) Test Period - You have 22 minutes 30 seconds to answer 30 questions, While agriculture is the growing of plants as crops and animals for food, biology is the study of life, which broadly divides into plants and animals, according to Reference.com. The two relate closely and intertwine often. The best agricul..., Subscription Needed. Shmoop Practice Tests (free trial available, $24.68 a month for subscription) A subscription to Shmoop will get you access to a diagnostic test plus five full AP Biology practice tests (including both multiple-choice and free-response questions, although these are of course unofficial)., AP Biology Unit 3 FRQ Exam Prep. 20 terms. auntieem5. AP Biology Unit 3 Cellular Energetics. 25 terms. vallerycontreras26. AP Biology | Unit 4 MCQ Practice Questions. 24 terms. annachen-Sets found in the same folder. AP Bio MCQ Unit 5. 23 terms. Hufflepuff_Hamilton. BIO LAB - Experiment questions. 12 terms., AP Biology Unit 2 - Cell Structures and Functions. 67 terms. 4.5 (4) jamie_gilbert_oohs Teacher. 20 studiers today. Biology in Focus (AP) Chapter 4. 33 terms. 5 (2) mohre. ... Learn ap biology with free interactive flashcards. Choose from 5,000 different sets of ap biology flashcards on Quizlet. Try Magic Notes and save time. ..., 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. Write your response in the space provided for each question. Only, The AP Biology framework included in the course and exam description outlines distinct skills, called science practices, that students should practice throughout the year—skills …, The Science Practice Challenge Questions contain additional test questions for this section that will help you prepare for the AP exam. These questions address the following standards: [APLO 2.1][APLO 2.2][APLO 2.4][APLO 4.16][APLO 2.3], Correct Answer. A. Hydronium Ions (H3O+) Explanation. Hydronium ions (H3O+) can supplement for H+ ions because they are formed when a water molecule (H2O) gains an extra proton (H+). This proton is then attached to the oxygen atom in the water molecule, resulting in the formation of a hydronium ion., evidence 3) chloro­plasts and mitoch­ondria both have two membranes (inner membrane contains different proteins than the outer membrane) Surface Area to Volume Ratio a comparison between the size of the outside of an object and the amount inside, Test Taking Strategies • Use the diagrams • Develop your OWN ideas • Read the questions before reading the prompt • Paper Testers - Underline/circle important information in prompt • Paper Testers - Write analysis on graph • Digital Testers - average about 1.3 minutes per question • Digital Testers -ask teacher for a bubble sheet to, a. Nitrogen – ionic nitrogen in the soil. b. Water – atmospheric water vapor. c. Carbon – dissolved CO2 in aquatic ecosystems. d. Phosphorous – sedimentary rocks. Subtraction of which of the following will convert gross primary productivity into net primary productivity? a. the energy contained in the standing crop., Unit 1 Biology foundations. Unit 2 Cells. Unit 3 Energy and transport. Unit 4 Reproduction and cell division. Unit 5 Classical genetics. Unit 6 Molecular genetics. Unit 7 Evolution. Unit 8 Human body systems. Unit 9 Ecology., May aid in the transport of materials from one side of the membrane to the other. B. Membrane proteins of adjacent cells may hook together in various kinds of junctions. C. May be an enzyme or series of enzymes involved in metabolic pathways. D. May be a membrane carbohydrate used for cell-to-cell recognition. Question 15., Unit 1: Chemistry of Life. You’ll learn about water’s role as the basis of life and the functions of macromolecules like lipids and proteins. Topics may include: The structure and chemical properties of water. The makeup and properties of macromolecules. The structure of DNA and RNA. On The Exam. 8%–11% of exam score., AP® BIOLOGY EQUATIONS AND FORMULAS x = sample mean . n = sample size . s = sample standard deviation (i.e., the sample-based estimate of the standard deviation of the population) o = observed results. e = expected results = sum of all . Degrees of freedom are equal to the number of distinct possible outcomes minus one., 1 / 23 The electronegative atom is reduced Click the card to flip 👆 Flashcards Learn Test Match Created by sarahbrown619 Terms in this set (23) When electrons move closer to an electronegative atom The electronegative atom is reduced ATP made in glycolysis comes from Substrate level phosphoriliation, Are you preparing to take the Certified Nursing Assistant (CNA) exam? Taking a practice test is one of the best ways to get ready for the real thing. Here are three tips to help you make the most of your practice test experience., glucose, takes 2 ATP to get going, 2 NAD+. Outputs: 2 pyruvate molecules, net 2 ATP, 2 NADH. Study with Quizlet and memorize flashcards containing terms like Describe the enzyme mediated process., Identify TWO environmental factors the impact enzymatic activity., Explain the effect of the two factors you identified. and more., AP Bio Unit 5 Practice Test. For a couple of decades, biologists knew the nucleus contained DNA and proteins. The prevailing opinion was that the genetic material was proteins, and not DNA. The reason for this belief was that proteins are more complex than DNA. This is because. a. proteins have a greater variety of three-dimensional forms than ..., AP Biology Unit 3: Cellular Energetics Topics - Enzyme Structure, Enzyme Catalysis, Environmental Impacts on Enzyme Function, Cellular Energy, Photosynthesis, Cellular …, AP Biology AP Biology students are penguins because they are dressed for success! ... Unit 3 Big Topics • Enzymes • Cellular Respiration • Photosynthesis 12 –18% of the AP Biology Exam Based on 2020 Practice Exams –that’s 9.3 questions. Cellular Respiration Cellular Respiration Big Ideas: • What are the steps? • What goes into step?