Ap bio unit 2 progress check mcq

Unit 2: In AP Classroom, Complete Personal Progress Check MCQ, FRQ Part A, FRQ Part B Unit 3: Early Europe and Colonial America (200–1750CE) Topics Skills 3.1 Cultural Contexts of Early European and ColonialAmerican Art 2.A, 2.D 3.2 Interactions Within and Across Cultures in EarlyEuropean and Colonial American Art 4.C, 3.B, 4.A, 4.B, 4.D

4.3 (31 reviews) A certain type of specialized cell contains an unusually large amount of rough endoplasmic reticulum (ER). Which of the following functions is this cell type most likely specialized to perform? Click the card to flip 👆 The production and secretion of …Personal Progress Check 2 Multiple-Choice: ~30 questions Free-Response: 2 questions Interpreting and Evaluating Experimental Results (partial) §Analyze Model or Visual Representation (partial) SYI 2.1 Cell Structure: Subcellular 1. Components. SYI. 2.2 . Cell Structure and Function. 6 ENE. 2.3 . Cell Size. 5 2. ENE. 2.4 Plasma Membranes. 2 ENE ...Anyone who loves sports betting is definitely going to want to know more about the Vegas Line. Check out this guide to the Vegas Line, and learn more about gambling on sports games in the United States.Learn AP Biology using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of biochemistry, cell biology, genetics, evolution, and ecology, and develop scientific thinking skills as you explore the study of life. ... Unit 10 Unit 10: AP®︎ Biology standards mappings. This unit does not include exercises. Course …Unit 2 Progress Check: MCQ. 19. A study was conducted to understand the factors controlling the rate at which molecules or ions travel across cell. membranes. An artificial membrane was created that was composed of a phospholipid bilayer only. The speed at. which various substances crossed this membrane was measured.Question: CollegeBoard AP Classroom Unit 7 Progress Check: MCQ 5 6 (10) 11 12 13 Question 70 of the following, which is not a solution to the differential equation y ...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 Unit 2 Progress Check: MCQ. Flashcards. Learn. Test. Match. A certain type of specialized cell contains an unusually large amount of rough endoplasmic reticulum (ER). ... The ratio increases from 1.2 to 1.6, because more stomata are needed at higher CO2 concentrations. Answer A Correct. The ratio of 300 stomata per mm2 to 350 ppm CO2 is …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. 🌲 …CELL 2. Which of the following provides an accurate calculation of the surface area to volume ratio of an HS red blood cell, as well as a prediction of its affect on the efficient transferring of oxygen compared to a normal red blood cell? The ratio is 0.89, and the cells are LESS efficient at transferring oxygen.APES Unit 5 Progress Check MCQ Review. 39 terms. obeebe21. Other sets by this creator. Theology unit 1 test. 31 terms. JakeSambuchino. ... AP Bio Unit 3 Test Study ...Study with Quizlet and memorize flashcards containing terms like The general pattern of nomadic conquest followed by the assimilation of the conquerors into the cultures of the conquered societies was most clearly expressed in which of the following developments in the period circa 1250-1450 ?, Which of the following developments in the period circa …Study with Quizlet and memorize flashcards containing terms like layer of ice 0 degree C, air -5 degree C, water 4 degree C best describes how the structure of ice benefits the organisms that live in the water below?, Which of the following models best demonstrates the arrangement of hydrogen bonds between adjacent water molecules?, how water is pulled up through the xylem to the leaves of the ...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 on the exam may be different. 1. Meiosis: Mitosis. A. creates 2 sets of diploid cells: creates 1 set of diploid cells. B. creates 2 haploid cells: creates 2 diploid cells.Oct 13, 2020 · Recorded with https://screencast-o-matic.com

CO2CO2 and N2N2 movement in and out of cells is unaffected when membrane protein activity is blocked. We have an expert-written solution to this problem! AP Bio Unit 2 Progress check questions and answers Learn with flashcards, games, and more — for free.2.1 (61 reviews) Block A is placed on a rough surface inclined at an angle θ above the horizontal. A taut string connects block A over a pulley to block B, which hangs from the string, as shown below. The masses of blocks A and B are MA and MB, respectively. At time t=0, block A is sliding up the slope as block B falls, and the blocks are both ...The organisms with the best suited characteristics for their environment will live to reproduce, and pass those characteristic on to their offspring. D. Natural selection can increase the proportion of favorable traits in a population. Question 21. Sickle Cell Disease is caused by having two alleles for Hemoglobin S.The synthesis of polysaccharides for energy storage D These mutations are associated with a number of debilitating diseases stemming from the production of nonfunctional proteins in the mitochondria. Which of the following cellular deficiencies would most likely be related to these MT-ND1 mutations? AP Psych Unit 2 Progress Check: MCQ. Ruth and Debbie are identical twins who were raised by the same family. Vince and Frankie are identical twins who were separated at birth and raised by different families. According to research on the heritability of personality traits, Ruth's and Debbie's personalities are statistically.

Eulerian cycle.

1. During an investigation of a freshwater lake, an AP Biology student discovers a previously unknown microscopic organism. Further study shows that the unicellular organism is eukaryotic. (a) Identify FOUR organelles that should be present in the …It is the most conspicuous organelle in a eukaryotic cells. - The nuclear envelope encloses the nucleus, separating its contents from the cytoplasm. This is a double membrane, each membrane has a lipid bilayer with associated proteins. - The envelope is lined by the nuclear lamina, which is a netlike array of protein filaments that maintains ...1 / 30 Flashcards Learn Test Match Q-Chat jaydencheung_ Top creator on Quizlet AP Classroom AP Biology Unit 2 Progress Check MCQ Questions with Answer Key and Explanations Terms in this set (30) A certain type of specialized cell contains an unusually large amount of rough endoplasmic reticulum (ER). Ap Bio Unit 5: MCQ Progress Check Quiz 🎓 Find Tens of Thousands Exams, Test Answers and Flashcards in Any Category at Quizzes Studymoose 🎓 Upgrade Your Brain. About us; ... Meiosis 2 and 3 lead to the formation of cells with 7 chromosomes. During meiosis II, homologous chromosomes separate.

Study with Quizlet and memorize flashcards containing terms like The hormone most associated with the fight or flight response is A) oxytocin B) epinephrine C) testosterone D) estrogen E) dopamine, A neuron sends a signal along its A) dendrite B) optic chiasm C) axon D) neurotransmitter E) nucleus, The medulla oblongata is a part of the A) cerebellum B) prefrontal cortex C) occipital lobe D ...Terms in this set (6) (a) Identify the oldest stage of succession shown in the figure above. the forest. (b) Pioneer species are important in ecological succession. (i) Identify a pioneer species that could be found in an ecosystem like the one in the figure above. (i): Any of these answers are correct ⬇️. • lichens.Country A : Stage 2, West Africa; Country B : Stage 4, western Europe. Neo-Malthusian theory can be used to explain which of the following situations? South Sudan experienced famine during the twenty-first century as a result of war and drought.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.Participants will explore appropriate pre- AP activities that can be Apr 04, 2021 Unit 1 progress check mcq ap lang quizlet ap classroom unit 5 progress check mcq answers, When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. 1 day ago Amsco chapter 14.In a certain small mammal, fur color is controlled by a pair of alleles, with B being dominant over b. The genotypes BB and Bb result in dark-colored fur, the genotype bb results in light-colored fur. A population of the species has the following allele frequencies: B=0.85 and b=0.15. If a fire caused the surface of the ground in the habitat of ...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 area of a cell., 2. Eukaryotic cells are ...AP Psychology Cram Unit 1: Scientific Foundations of Psychology. written by John Mohl. AP Psychology Cram Unit 2: Biological Bases of Behavior. written by John Mohl. 🌶️ AP Psych Cram Review: Unit 2: Biological Bases of Behavior. written by John Mohl. AP Psychology Cram Unit 3: Sensation and Perception. written by John Mohl.AP Calculus AB Scoring Guide Unit 2 Progress Check: MCQ Part B Copyright © 2017. The College Board. These materials are part of a College Board program.Topic questions are formative questions to check student understanding as you teach. Assign topic questions to reveal student misunderstandings and target your lessons. Progress checks help you gauge student knowledge and skills for each unit through: multiple-choice questions with rationales explaining correct and incorrect answers, and Table 1. Effect of Enzymes A and B on Cellulose and Starch. Test Tube Polysaccharide Added Enzyme Added Glucose Detected after 5 Minutes at 37°C. 1 Cellulose A No. 2 Cellulose B Yes. 3 Starch A Yes. 4 Starch B no. Mammals do not produce digestive enzyme B. However, sheep and cattle are two types of mammals that contain microorganisms in their ...

AP Biology Unit #2 test Review. 10th - 12th. grade. Biology. 74% . accuracy. 451 . plays. Deleted User. 6 years. ... 2 minutes. 1 pt. An organism lives in the Arctic ...

9th - 12th. 15 Qs. Macromolecules. 12.6K plays. 10th. AP Biology: Unit 1 Review (CED) quiz for 9th grade students. Find other quizzes for Biology and more on Quizizz for free!a) Lakes don't freeze solid in winter, despite low temperatures. b) A water strider can walk across the surface of a small pond. c) Organisms resist temperature changes, although they give off heat due to chemical reactions. d) Evaporation of sweat from the skin helps to keep people from overheating.Country A : Stage 2, West Africa; Country B : Stage 4, western Europe. Neo-Malthusian theory can be used to explain which of the following situations? South Sudan experienced famine during the twenty-first century as a result of war and drought.The progressive movement in the United States, which took place from the 1890s to the 1920s, sought to protect social welfare, promote fairness, control big business, uphold moral values and promote greater efficiency of government and busi...AP Classroom - College BoardStudy with Quizlet and memorize flashcards containing terms like Describe the role of carbon in biological systems., The membranes of both B cells and the cancer cells are largely composed of phospholipids. Explain how, when the membranes are fused, the polar parts of the phospholipids from one cell will interact with the phospholipids from the ...5.6×10^14 s−1. In an experiment on the photoelectric effect, a photon with a frequency of 7×10^14s−1 was absorbed by a sample. What is the approximate energy of this photon. 5×10^−19J. The frequency and energy ranges of photons in some parts of the electromagnetic spectrum are given in the table above. Which of the following could be ... Unit 8 Progress Check: AP Biology MCQ. In the mid-1920s, gray wolves, Canis lupus, were eliminated from Yellowstone National Park in the northwestern United States. Over the course of 1995 and 1996, 31 wolves from Canada were relocated to the park. Researchers have tracked the growth of the wolf population from 21 in 1995 to 108 at the end of ...

Score of wvu kansas football game today.

Ku sports football.

Topic questions are formative questions to check student understanding as you teach. Assign topic questions to reveal student misunderstandings and target your lessons. Progress checks help you gauge student knowledge and skills for each unit through: multiple-choice questions with rationales explaining correct and incorrect answers, and 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 area of a cell., 2. Eukaryotic cells are ... Unit 1 Progress Check MCQ AP Bio. 5.0 (1 review) Flashcards; Learn; Test; ... RNA contains ribose, whereas DNA contains deoxyribose. A ribose sugar has an −OH group linked to the 2′ carbon that a deoxyribose sugar does not have. Different polysaccharides are used by plants for energy storage and structural support. The molecular structures …On 4/28: Watch and study any one of the online AP CLASSES and REVIEW SESSIONS that can be found here. On 4/30: Complete Unit 4 Progress Check MCQ (multiple choice questions) in My AP (AP Classroom), as well as Unit 4 Progress Check FRQ . Be sure to check your responses against the Scoring Guidelines for feedback.Ap Bio Unit 5: MCQ Progress Check Quiz 🎓 Find Tens of Thousands Exams, Test Answers and Flashcards in Any Category at Quizzes Studymoose 🎓 Upgrade Your Brain. About us; ... Meiosis 2 and 3 lead to the formation of cells with 7 chromosomes. During meiosis II, homologous chromosomes separate.Learn AP Biology using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of biochemistry, cell biology, genetics, evolution, and ecology, and develop scientific thinking skills as you explore the study of life. ... Unit 10 Unit 10: AP®︎ Biology standards mappings. This unit does not include exercises. Course …It declined to less than a half of its 1320 level ( over 50% decline) Study with Quizlet and memorize flashcards containing terms like The general pattern of nomadic conquest followed by the assimilation of the conquerors into the cultures of the conquered societies was most clearly expressed in which of the following developments in the period ...AP® BIOLOGY EQUATIONS AND FORMULAS ... activity in PKD cells treated with 1 pM ouabain is 150 units of ATP hydrolyzed/sec. Calculate . the expected Na / K ATPase + + activity (units/sec) in PKD cells treated with 10pM. 6. ouabain. (d) In a third experiment, the scientists added an inhibitor of phosphorylatedTerms in this set (42) Which structure is not part of the endomembrane system? chloroplast. Which structure is common to plant and animal cells? mitochondrion. Which of the following is present in a prokaryotic cell? ribosome. Which structure-function pair is mismatched? microtubule; muscle contraction. ….

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.B) 2, testosterone covalently binds to a surface protein and transports into the cell. C) 3, testosterone dissolves in water and flows through the channel. D) 4, testosterone is filtered out of the extracellular fluid and taken into the cell by endocytosis.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. That means it should take you around 15 minutes to complete 10 questions. ... 🔍Check …If you’re looking for a reliable insurance provider, Progressive is a great option. With millions of customers and independent agents and brokers, Progressive is one of the larger insurance providers in the United States.1. During an investigation of a freshwater lake, an AP Biology student discovers a previously unknown microscopic organism. Further study shows that the unicellular organism is eukaryotic. (a) Identify FOUR organelles that should be present in the eukaryotic organism and describe the function of each organelle. AP Classroom AP Biology Unit 2 Progress Check MCQ Questions with Answer Key and Explanations Learn with flashcards, games, and more — for free.Oct 21, 2023 · ap bio unit 3 progress check mcq. Which of the following statements correctly explains the observed effect of the acetylcholine concentration on the rate of the enzyme-catalyzed reaction? The active site of AChE is specific for acetylcholine, and only one substrate molecule can occupy the active site at a time. Answer D. Correct. The cytosolic surface of the rough ER is covered by ribosomes that synthesize proteins that are then transported into the rough ER, then to the Golgi complex, and finally out of the cell. A group of mutations, known as MT-ND1, have been identified …D) The ratio increases from 1.2 to 1.6, because more stomata are needed at higher CO2 concentrations. Answer A Correct. The ratio of 300 stomata per mm2 to 350 ppm CO2 is 0.86, and the ratio of 250 stomata per mm2 to 400 ppm CO2 is 0.63. Ap bio unit 2 progress check mcq, See unit 3 progress check mcq ap bio. Based on the data in the figure a student claimed that since 2007 the carrying capacity of wolves in Yellowstone National Park has been 100. AP Biology Unit 3 DRAFT. Apes unit 5 progress check quizlet Apes unit 5 progress check quizlet Unit 1 AP Exam Multiple Choice Questions 1., Study Guides by Unit. ⚛️ Unit 1 – Atomic Structure & Properties. 🤓 Unit 2 – Molecular & Ionic Bonding. 🌀 Unit 3 – Intermolecular Forces & Properties. 🧪 Unit 4 – Chemical Reactions. 👟 Unit 5 – Kinetics. 🔥 Unit 6 – Thermodynamics. ⚖️ Unit 7 – Equilibrium. 🍊 Unit 8 – Acids & Bases., 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 Bio Unit 5: MCQ Progress Check Quiz 🎓 Find Tens of Thousands Exams, Test Answers and Flashcards in Any Category at Quizzes Studymoose 🎓 Upgrade Your Brain. About us; ... Meiosis 2 and 3 lead to the formation of cells with 7 chromosomes. During meiosis II, homologous chromosomes separate., 1. During an investigation of a freshwater lake, an AP Biology student discovers a previously unknown microscopic organism. Further study shows that the unicellular organism is eukaryotic. (a) Identify FOUR organelles that should be present in the …, Anyone who loves sports betting is definitely going to want to know more about the Vegas Line. Check out this guide to the Vegas Line, and learn more about gambling on sports games in the United States., Short for Permanent Account Number, a PAN is the number the Indian government associates with a tax-paying person in India, similar to a Social Security number in the United States. Follow these steps to check your PAN status., Study with Quizlet and memorize flashcards containing terms like 1. X | 0 | 1 F(x) | 1 | 2 Let f be the function given by f(x) = 2^(x^2). Selected values of f are given in the table above. If the values in the table are used to approximate f'(0.5), what is the difference between the approximation and the actual value of f'(0.5)? A. 0 B. 0.176 C. 0.824 D. 1, 2., Which of the following processes best explains a decrease in mortality rates worldwide? Eastern Europe. Based on the demographic transition model, which region is best described as exhibiting overall negative rates of growth in stage 4? Country A : Stage 2, West Africa; Country B : Stage 4, western Europe., Cytochrome b is a mitochondrial protein that functions in the electron transport chain. Partial sequences of cytochrome b mitochondrial DNADNA are often used in phylogenetic analyses. DNADNA was obtained from mammoth bone fragments radiocarbon dated to between 12,000 and 14,000 years ago and from living African and Asian elephants., 4.3 (31 reviews) A certain type of specialized cell contains an unusually large amount of rough endoplasmic reticulum (ER). Which of the following functions is this cell type most likely specialized to perform? Click the card to flip 👆 The production and secretion of …, B. To retard the breakdown of the catalase. The following questions refer to an experiment that is set up to determine the relative volume of O2 consumed by germinating and nongerminating (dry) pea seeds at two different temperatures. The change in volume is detected by using a respirometer over a given period of time. , 4.5 (29 reviews) Skill Category 1: Explain the function of character. Skill 1.A: Identify and describe what specific textual details reveal about a character, that character's perspective, and that character's motive (2/3). Skill Category 3: Explain the function of plot and structure., View AP Biology Unit 7 Evolution; MCQ Questions 2.pdf from BIOLOGY 101 at Oakland High School, Oakland. AP Biology Scoring Guide Unit 7 Progress Check: MCQ Part A 2. Whales, bony fishes, and, AP Bio Unit 4 MC - CollegeBoard. 12th. grade. Biology. 71% . accuracy. 2.1K . plays. ... Metformin is a drug used to treat type 2 diabetes by decreasing glucose ..., ap bio unit 3 progress check mcq. Which of the following statements correctly explains the observed effect of the acetylcholine concentration on the rate of the enzyme-catalyzed reaction? The active site of AChE is specific for acetylcholine, and only one substrate molecule can occupy the active site at a time., 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., 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. , 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 ..., Test Match Q-Chat Created by BM4379 Terms in this set (36) A certain type of specialized cell contains an unusually large amount of rough endoplasmic reticulum (ER). Which of the following functions is this cell type most likely specialized to perform? The production and …, Unit 4 Progress Check: MCQ root tips growing in compact sand. The average cell cycle time is greater for the root tips growing in compact sand than for the root tips, Sign in to access your AP or Pre-AP resources and tools including AP Classroom., Cytochrome b is a mitochondrial protein that functions in the electron transport chain. Partial sequences of cytochrome b mitochondrial DNADNA are often used in phylogenetic analyses. DNADNA was obtained from mammoth bone fragments radiocarbon dated to between 12,000 and 14,000 years ago and from living African and Asian elephants., Go to AP Classroom to assign the Personal Progress Check for Unit 2. ... 48 | Course and Exam DescriptionCourse Framework V.1 AP Biology 00762-113-CED-Biology_Unit 2.indd 48 2/28/19 7:18 PM. Cell Structure and Function UNIT2 ESSENTIAL KNOWLEDGE X XCLUSION STATEMENT—E The role of the Golgi in the synthesis of specific …, Sign in to access your AP or Pre-AP resources and tools including AP Classroom., Unit 2 Progress Check: MCQ. 19. A study was conducted to understand the factors controlling the rate at which molecules or ions travel across cell. membranes. An artificial membrane was created that was composed of a phospholipid bilayer only. The speed at. which various substances crossed this membrane was measured., Study with Quizlet and memorize flashcards containing terms like In the mid-1920s, gray wolves, Canis lupus, were eliminated from Yellowstone National Park in the northwestern United States. Over the course of 1995 and 1996, 31 wolves from Canada were relocated to the park. Researchers have tracked the growth of the wolf population from 21 in 1995 to 108 at the end of the study in 2016 (Figure ..., Lysosome. The __________ is a selective barrier that allows oxygen, nutrients, and wastes to service the volume of every cell. Plasma membrane. Ribosomes use the information from the DNA to make what. Proteins. This cell type is characterized by having no nucleus, but instead a nucleoid, and no membrane bound organelles., Ap Bio Unit 5: MCQ progress check. 24 terms. TheJovian67. AP Bio MCQ Unit 5. 23 terms. Hufflepuff_Hamilton. ... AP Biology Unit 2 Test. 57 terms. notisabelle. sample ..., Rheumatoid arthritis is a chronic inflammatory autoimmune disease of unknown origin with a variable progression. It primarily impacts the joints but can also affect the internal organs. About 1.3 million adults in the United States are affe..., Unit 4 Progress Check: MCQ root tips growing in compact sand. The average cell cycle time is greater for the root tips growing in compact sand than for the root tips , CO2CO2 and N2N2 movement in and out of cells is unaffected when membrane protein activity is blocked. We have an expert-written solution to this problem! AP Bio Unit 2 Progress check questions and answers Learn with flashcards, games, and more — for free., A. They increase the heat in the cell, and therefore speed up the reaction by allowing reactants to attain the transition state more often. B. Enzymes speed up reactions by changing the amount of free energy available in the cell for reactions. C. Enzymes make endergonic reactions exergonic. D.