0% MDCAT - MOCK TESTA comprehensive 200-question paper replicating the exact format and weightage prescribed by the Pakistan Medical Commission (PMC). This timed, 3.5-hour exam rigorously evaluates core competencies in Biology, Chemistry, Physics, and English, with scenario-based questions and integrated logical reasoning to mirror the actual testing experience and boost candidate readiness. 1 / 200The basic structural and functional unit of life is: DNA Tissue Cell Organ 2 / 200Which of the following is NOT a part of the cell theory? All cells have a nucleus All living things are made of cells Cells arise from pre-existing cells The cell is the basic unit of life 3 / 200The process by which plants make their own food using sunlight is called: Respiration Photosynthesis Transpiration Digestion 4 / 200In which organelle does cellular respiration primarily occur? Ribosome Chloroplast Nucleus Mitochondria 5 / 200The molecule that carries genetic information in most organisms is: DNA ATP Protein RNA 6 / 200Which blood cells are responsible for carrying oxygen? Plasma White blood cells Platelets Red blood cells 7 / 200The human heart has how many chambers? 2 3 4 5 8 / 200Photosynthesis occurs in which part of the plant cell? Vacuole Mitochondria Chloroplast Nucleus 9 / 200Which of the following is a greenhouse gas? Hydrogen Oxygen Nitrogen Carbon dioxide 10 / 200The process of cell division that results in two identical daughter cells is: Meiosis Mitosis Fertilization Replication 11 / 200Which organ is responsible for filtering blood and producing urine? Spleen Kidney Pancreas Liver 12 / 200Enzymes function by: Increasing activation energy Changing pH Decreasing activation energy Producing heat 13 / 200The smallest bone in the human body is found in the: Hand Foot Ear Nose 14 / 200Which part of the brain controls balance and coordination? Cerebrum Cerebellum Medulla oblongata Hypothalamus 15 / 200The process of water movement through a plant and evaporation from leaves is called: Transpiration Osmosis Respiration Photosynthesis 16 / 200Which vitamin is produced by the human body when exposed to sunlight? Vitamin D Vitamin C Vitamin B12 Vitamin A 17 / 200Mendel is known as the father of: Ecology Evolution Microbiology Genetics 18 / 200The main function of white blood cells is to: Carry oxygen Transport nutrients Fight infection Clot blood 19 / 200Which blood type is known as the universal donor? AB B A O 20 / 200The process by which plants lose water vapor through their leaves is: Evaporation Transpiration Condensation Precipitation 21 / 200Which organelle is responsible for protein synthesis? Mitochondria Ribosome Golgi apparatus Endoplasmic reticulum 22 / 200DNA replication occurs during which phase of the cell cycle? G1 phase S phase G2 phase M phase 23 / 200The largest gland in the human body is the: Pancreas Liver Pituitary Thyroid 24 / 200Which of the following is a renewable resource? Coal Solar energy Petroleum Natural gas 25 / 200The human respiratory system includes all EXCEPT: Trachea Bronchi Alveoli Aorta 26 / 200Which part of the flower develops into a fruit? Ovary Petal Sepal Stamen 27 / 200The process by which plants respond to light is called: Geotropism Hydrotropism Thigmotropism Phototropism 28 / 200Which of the following is a communicable disease? Diabetes Cancer Tuberculosis Heart disease 29 / 200Which of the following is a decomposer in an ecosystem? Grass Rabbit Hawk Fungus 30 / 200In humans, fertilization normally occurs in the: Cervix Fallopian tube Ovary Uterus 31 / 200The theory of natural selection was proposed by: Gregor Mendel Charles Darwin Louis Pasteur Robert Hooke 32 / 200Which of the following is a micronutrient required by plants? Nitrogen Phosphorus Iron Potassium 33 / 200Which of the following is a decomposer in an ecosystem? Grass Rabbit Hawk Fungus 34 / 200The process of converting light energy into chemical energy occurs during: Respiration Photosynthesis Digestion Transpiration 35 / 200Which blood vessels carry blood away from the heart? Venules Capillaries Veins Arteries 36 / 200The central nervous system consists of: Brain and spinal cord Sensory organs only Nerves throughout the body Brain and peripheral nerves 37 / 200Which of the following is a sex-linked disorder? Down syndrome Hemophilia Turner syndrome Klinefelter syndrome 38 / 200The main function of roots in plants is: Photosynthesis Reproduction Absorption of water and minerals Gas exchange 39 / 200Which hormone regulates blood sugar levels? Adrenaline Estrogen Thyroxine Insulin 40 / 200The process of copying DNA into mRNA is called: Translation Replication Transcription Transformation 41 / 200Which of the following is a function of the skeletal system? Respiration Support and protection Blood circulation Digestion 42 / 200In the human eye, the part that controls the amount of light entering is the: Retina Pupil Lens Cornea 43 / 200Which of the following is a biotic factor in an ecosystem? Temperature Water Soil Plants 44 / 200The process by which organisms maintain a stable internal environment is called: Metabolism Homeostasis Adaptation Evolution 45 / 200Which of the following is NOT a type of RNA? rRNA tRNA mRNA xRNA 46 / 200What is the atomic number of an element with 12 protons and 12 neutrons? 24 6 12 18 47 / 200Which of the following is a noble gas? Nitrogen Oxygen Chlorine Neon 48 / 200The vertical columns in the periodic table are called: Groups Periods Blocks Rows 49 / 200A substance that turns blue litmus paper red is: An acid A base A salt Neutral 50 / 200The chemical formula for water is: CO₂ NaCl H₂O O₂ 51 / 200What is the charge on a proton? Neutral Negative Variable Positive 52 / 200The process of a solid changing directly into a gas is called: Evaporation Sublimation Condensation Melting 53 / 200Which subatomic particle is located in the nucleus of an atom? Electron only Neutron only Proton and Neutron Proton only 54 / 200How many electrons can the first shell (K-shell) of an atom hold? 0 1 2 3 55 / 200 Which of the following is a compound? Water Oxygen Air Iron 56 / 200The pH of a neutral solution at 25°C is: 3 7 9 11 57 / 200 The symbol 'Na' represents the element: Nitrogen Nickel Neon Sodium 58 / 200A covalent bond is formed by the: Transfer of electrons Donation of protons Sharing of protons Sharing of electrons 59 / 200Which state of matter has a definite volume but no definite shape? Solid Liquid Gas Plasma 60 / 200The number of moles in 44 grams of CO₂ (C=12, O=16) is: 0.5 1 2 3 61 / 200The shape of a methane (CH₄) molecule is: Linear Bent Tetrahedral Trigonal Planar 62 / 200According to Le Chatelier's Principle, if the temperature is increased for an exothermic reaction at equilibrium, the equilibrium will shift: To the right, favoring products It will not shift To the left, favoring reactants First to the right, then to the left 63 / 200In a chemical reaction, the substance that is completely consumed first is called the: Limiting reactant Excess reactant Product Catalyst 64 / 200Which of the following has the highest boiling point? H₂O CH₄ HCl NH₃ 65 / 200The oxidation state of sulfur in H₂SO₄ is: +2 -2 +6 +4 66 / 200In the electrolysis of molten NaCl, the product at the cathode is: Chlorine gas Oxygen gas Sodium metal Hydrogen gas 67 / 200A solution with a pH of 3 is how many times more acidic than a solution with a pH of 5? 2 times 10 times 100 times 1000 times 68 / 200The general formula for alkanes is: CₙH₂ₙ CₙH₂ₙ₋₂ CₙHₙ CₙH₂ₙ₊₂ 69 / 200The unit of molarity is: mol/kg g/L ppm mol/L 70 / 200Which of the following is a strong electrolyte? Acetic acid Ethanol Sodium chloride solution Sugar solution 71 / 200The Haber process is used for the industrial production of: Sulfuric Acid Ammonia Urea Nitric Acid 72 / 200Which halogen is a liquid at room temperature? Chlorine Fluorine Iodine Bromine 73 / 200The bond angle in a water molecule is approximately: 120° 104.5° 180° 109.5° 74 / 200The mass of 2.24 L of CO₂ gas at STP is: 22 g 44 g 4.4 g 2.2 g 75 / 200Which quantum number defines the shape of an orbital? Azimuthal quantum number (l) Principal quantum number (n) Spin quantum number (s) Magnetic quantum number (m) 76 / 200In a face-centered cubic (FCC) crystal lattice, the number of atoms per unit cell is: 1 2 4 6 77 / 200The reaction CH₃COOH + C₂H₅OH ⇌ CH₃COOC₂H₅ + H₂O is an example of: Saponification Esterification Hydrolysis Polymerization 78 / 200The IUPAC name for CH₃-CH₂-CHO is: Propanone Ethanal Butanal Propanal 79 / 200According to the Kinetic Molecular Theory, the pressure of a gas is due to: The weight of the gas molecules The collision of gas molecules with the container walls The attraction between gas molecules The volume occupied by the gas molecules 80 / 200The catalyst used in the Contact Process for sulfuric acid manufacture is: Platinum Iron Nickel Vanadium pentoxide 81 / 200The half-life of a first-order reaction is 10 minutes. The time taken for the concentration of the reactant to decrease from 1.0 M to 0.125 M is: 10 minutes 20 minutes 30 minutes 40 minutes 82 / 200The complex ion [CoF₆]³⁻ is paramagnetic. The hybridization of cobalt in this complex is: sp³ dsp² d²sp³ sp³d² 83 / 200For a reaction, ΔG is negative. This means the reaction is: Spontaneous At equilibrium Non-spontaneous Fast 84 / 200The osmotic pressure of a 0.1 M solution of a non-electrolyte at 27°C (R=0.0821 L.atm/mol.K) is: 0.246 atm 24.6 atm 2.46 atm 1.23 atm 85 / 200 In a face-centered cubic lattice, a unit cell is shared by how many unit cells? 2 4 6 8 86 / 200The standard enthalpy of formation (ΔH°f) for which of the following substances is zero? O₂(g) CO₂(g) H₂O(l) C(diamond) 87 / 200The correct order of reactivity towards nucleophilic substitution reaction for the following is: (I) CH₃-CH₂-Cl (II) (CH₃)₂CH-Cl (III) CH₃-CH₂-Br I > II > III III > I > II II > I > III I > III > II 88 / 200The E° value for the standard hydrogen electrode is assigned a value of: 0.00 V -1.00 V 2.00 V 1.00 V 89 / 200The rate law for a reaction is found to be Rate = k [A]²[B]. If the concentration of A is doubled and B is halved, the rate of reaction will: Become half Remain the same Become four times Become double 90 / 200The number of isomers possible for C₄H₈ (excluding stereoisomers) is: 3 4 5 6 91 / 200The compound that will undergo the Cannizzaro reaction is: Acetaldehyde Acetone Benzaldehyde Formalin 92 / 200 A buffer solution is prepared by mixing: Strong acid and its salt Weak acid and its salt Strong base and its salt Weak base and a strong acid 93 / 200In the decomposition of KClO₃ to KCl and O₂, 0.1 moles of KClO₃ produces how many grams of O₂? (O=16) 4.8 g 1.6 g 3.2 g 9.6 g 94 / 200The crystal field splitting energy (Δo) for an octahedral complex is: Directly proportional to the charge on the central metal ion Inversely proportional to the charge on the central metal ion Independent of the charge on the central metal ion Zero for transition metal complexes 95 / 200The SI unit of force is: Joule Pascal Newton Watt 96 / 200Which of the following is a scalar quantity? Force Velocity Acceleration Speed 97 / 200The acceleration due to gravity on the surface of the Earth is approximately: 1.6 m/s² 9.8 m/s² 10 m/s² 15 m/s² 98 / 200A body is in equilibrium when: It is at rest The net force acting on it is zero It is moving with constant velocity All of the above 99 / 200The unit of power is: Joule Newton Pascal Watt 100 / 200The splitting of white light into its constituent colors is called: Dispersion Reflection Refraction Diffraction 101 / 200Ohm's Law states the relationship between: Power, current, and voltage Charge, current, and time Voltage, current, and resistance Energy, power, and time 102 / 200The lens which is thicker in the middle than at the edges is a: Concave lens Convex lens Plano-concave lens Cylindrical lens 103 / 200The rate of change of displacement is called: Speed Momentum Velocity Acceleration 104 / 200The SI unit of electric charge is: Ampere Volt Coulomb Ohm 105 / 200The momentum of an object is defined as the product of its: Mass and acceleration Force and time Weight and velocity Mass and velocity 106 / 200A car travels 60 km in the first hour and 80 km in the second hour. What is its average speed for the entire journey? 60 km/h 70 km/h 80 km/h 140 km/h 107 / 200A force of 10 N is applied to an object, causing it to move 5 meters in the direction of the force. The work done is: 2 J 50 J 0.5 J 15 J 108 / 200The critical angle for a material is 30°. Its refractive index is: 0.5 1.0 1.5 2.0 109 / 200 In a parallel circuit, which of the following remains the same across all components? Power Voltage Resistance Current 110 / 200The time period of a simple pendulum depends on: Its length Its mass The material of the bob The amplitude of swing 111 / 200Which of the following electromagnetic waves has the shortest wavelength? Radio waves Microwaves X-rays Infrared 112 / 200The first law of thermodynamics is essentially a statement of the conservation of: Energy Momentum Charge Mass 113 / 200When a wave passes from one medium to another, which property remains unchanged? Wavelength Speed Frequency Amplitude 114 / 200A transformer works on the principle of: Self-induction Mutual induction Electromagnetic induction Both B and C 115 / 200The kinetic energy of a body of mass 2 kg moving at 10 m/s is: 20 J 50 J 100 J 200 J 116 / 200In a standing wave, the points of maximum amplitude are called: Nodes Antinodes Troughs Crests 117 / 200The specific heat capacity of water is: 1 J/g°C 10 J/g°C 4.18 J/g°C 100 J/g°C 118 / 200According to Newton's second law of motion: F = ma F = mv F = m/a F = mgh 119 / 200The phenomenon by which a compass needle aligns itself in a north-south direction is due to: Earth's gravitational field Earth's atmospheric pressure Earth's magnetic field Earth's electric field 120 / 200The unit of magnetic flux is: Tesla Weber Gauss Henry 121 / 200In a convex mirror, the image formed is always: Real and inverted Virtual and erect Real and erect Virtual and inverted 122 / 200The half-life of a radioactive element is 10 days. What fraction of the original sample remains after 30 days? 1/2 1/4 1/16 1/8 123 / 200A 100 W bulb operates for 10 hours. The energy consumed is: 0.1 kWh 10 kWh 100 kWh 1 kWh 124 / 200The force experienced by a current-carrying conductor in a magnetic field is given by: F = ILB sinθ F = I²LB F = IL/B F = IB/L 125 / 200A body of mass 5 kg is moving with a velocity of 10 m/s. A force is applied for 2 seconds, after which its velocity becomes 20 m/s. The magnitude of the applied force is: 50 N 25 N 75 N 100 N 126 / 200A projectile is launched at an angle of 30° to the horizontal with a velocity of 40 m/s. What is its time of flight? (g = 10 m/s²) 2 s 4 s 6 s 8 s 127 / 200In Young's double-slit experiment, if the distance between slits is doubled, the fringe width: Doubles Halves Quadruples Remains the same 128 / 200A Carnot engine operates between temperatures of 400 K and 300 K. Its efficiency is: 100% 25% 50% 75% 129 / 200The de Broglie wavelength associated with an electron accelerated through 100 V is approximately: 123 Å 0.123 Å 12.3 Å 1.23 Å 130 / 200 A satellite is in a circular orbit around the Earth. If its orbital radius is doubled, its orbital velocity: Doubles Becomes √2 times Becomes 1/√2 times Halves 131 / 200In a hydrogen atom, the electron transitions from n=3 to n=1. The emitted photon's energy is: 12.1 eV 10.2 eV 1.89 eV 13.6 eV 132 / 200A capacitor of 4 μF is charged to 100 V. The energy stored in it is: 0.02 J 0.16 J 0.08 J 0.04 J 133 / 200A wire of resistance 10 Ω is stretched to double its length. Its new resistance is: 10 Ω 30 Ω 20 Ω 40 Ω 134 / 200A body is projected vertically upward with a velocity equal to half the escape velocity from Earth's surface. The maximum height it reaches is: (R = Earth's radius) R/2 R/3 R/4 R/5 135 / 200In a photoelectric experiment, the stopping potential is 2 V. The maximum kinetic energy of emitted electrons is: 2 J 0.5 eV 2 eV 1 eV 136 / 200 A uniform rod of length L and mass M is pivoted at one end. Its moment of inertia about the pivot is: ML²/3 ML² 2ML²/3 ML²/12 137 / 200The fundamental frequency of an open organ pipe is 300 Hz. The frequency of the first overtone is: 900 Hz 300 Hz 450 Hz 600 Hz 138 / 200A particle executes SHM with amplitude A. Its speed is half the maximum speed when its displacement is: A/2 A/4 (√3/2)A A/√2 139 / 200Two charges of +4 μC and -4 μC are placed 2 cm apart. The dipole moment of this system is: 8 × 10⁻⁸ C·m 1 × 10⁻⁸ C·m 4 × 10⁻⁸ C·m 2 × 10⁻⁸ C·m 140 / 200A 2 kg block slides down a 30° inclined plane with an acceleration of 2 m/s². The frictional force acting on it is: (g = 10 m/s²) 2 N 6 N 8 N 4 N 141 / 200The wavelength of the Kα X-ray line for an element with atomic number Z is proportional to: Z Z² 1/Z 1/Z² 142 / 200A fluid is flowing through a pipe of varying cross-section. If the area is halved, the speed of flow becomes:A fluid is flowing through a pipe of varying cross-section. If the area is halved, the speed of flow becomes: Half One-fourth Double Four times 143 / 200In a nuclear reactor, the function of a moderator is to: Absorb neutrons Accelerate neutrons Reflect neutrons Slow down neutrons 144 / 200A particle of mass m is moving in a circle of radius r with constant speed v. The work done by the centripetal force during one complete revolution is: Zero 2πmv² mv²/r πmv² 145 / 200Urban gardening is gaining popularity in crowded cities as a means to promote local food security and community well-being. These small-scale gardens, often on rooftops or in shared plots, not only provide fresh produce but also help reduce the urban heat island effect and improve air quality for residents.What is the main idea of the passage? The benefits of urban gardening in cities The history of agricultural practices The cost of setting up a rooftop garden The challenges of rural farming 146 / 200According to the passage, urban gardens can help mitigate which specific urban environmental issue? Traffic congestion High crime rates The urban heat island effect Noise pollution 147 / 200The phrase "gaining popularity" implies that urban gardening is: Becoming more widely adopted Becoming less common Facing legal restrictions Remaining unchanged 148 / 200Besides providing food, what is another benefit of urban gardening mentioned? Increasing property taxes Creating more parking spaces Improving air quality Reducing public transportation use 149 / 200The practice of mindfulness involves paying deliberate, non-judgmental attention to the present moment. Studies suggest it can reduce stress and improve focus by training the brain to observe thoughts and sensations without immediate reaction. This mental discipline is increasingly incorporated into workplace and educational settings.The primary purpose of the passage is to: Critique modern workplace practices Compare different meditation techniques Define mindfulness and highlight its potential benefits Explain the biological mechanics of stress 150 / 200How does mindfulness purportedly help reduce stress, according to the passage? By eliminating all negative thoughts By encouraging prolonged sleep By training the brain to observe without immediate reaction By increasing the heart rate 151 / 200The word "deliberate" in the passage is closest in meaning to: Accidental Intentional Slow Judgmental 152 / 200Where is mindfulness being increasingly used, as noted in the passage? Only in religious institutions Exclusively in clinical therapy In workplace and educational settings In athletic training only 153 / 200Financial literacy, the ability to understand and effectively use various financial skills, is essential for personal well-being. It encompasses budgeting, investing, and managing debt. A lack of financial literacy can lead to poor decision-making, resulting in unsustainable debt burdens and financial insecurity.The main point of the passage is that financial literacy is: Crucial for personal well-being Only important for investors Primarily about earning a high income Too complicated for the average person 154 / 200Which of the following is NOT listed as a component of financial literacy? Budgeting Investing Managing debt Predicting the stock market 155 / 200What is a potential consequence of a lack of financial literacy mentioned in the passage? Guaranteed wealth Increased government support Financial insecurity Automatic budgeting 156 / 200 The order of stability of the following carbocations is: (I) (CH₃)₃C⁺ (II) CH₃-CH₂⁺ (III) (CH₃)₂CH⁺ I > II > III II > III > I III > II > I I > III > II 157 / 200The atomic number of an element is defined as the number of: Protons and neutrons Neutrons only Electrons only Protons only 158 / 200Which of the following is a homogeneous mixture? Sugar solution Milk Sand and water Soil 159 / 200The SI unit of pressure is: Atmosphere Pascal Torr Bar 160 / 200The process by which a solid changes directly into vapor without passing through the liquid state is called: Evaporation Sublimation Condensation Fusion 161 / 200Which sub-shell has the lowest energy? 3d 4s 4p 5s 162 / 200 The mass of one mole of electrons is approximately: 0.55 mg 1.008 g 0.184 g 9.1 g 163 / 200The oxidation state of chromium in K₂Cr₂O₇ is: +2 +4 +7 +6 164 / 200Which of the following is an example of a covalent network solid? Sodium chloride Diamond Ice Copper 165 / 200 According to Boyle's law, at constant temperature: P ∝ T V ∝ T V ∝ n P ∝ 1/V 166 / 200The shape of a water molecule is: Linear Trigonal planar Tetrahedral Bent 167 / 200Antonym of SUPERFICIAL is: Shallow Deep Surface Trivial 168 / 200A Synonym of CONCEAL is: Reveal Hide Cover Bury 169 / 200Antonym of CONTRACTION is: Shrinkage Reduction Compression Expansion 170 / 200Synonym of FECUND is: Barren Fruitful Fertile Foul 171 / 200Synonym of CAPRICIOUS is: Cautious Fickle Determined Goat-like 172 / 200A synonym of PROPITIOUS is: Unfavorable Proper Specious Favorable 173 / 200Synonym of OBVIATE is: State clearly Complicate Prevent Require 174 / 200Synonym of ENMITY is : Friendship Pity Boredom Hostility 175 / 200Antonym of VOLUNTARY is: Compulsory Optional Deliberate Intentional 176 / 200Antonym of STATIONARY is : Static Mobile Immobile Fixed 177 / 200Antonym of RETAIN is : Keep Preserve Release Hold 178 / 200The process used to convert vegetable oils into fats is: Saponification Hydrogenation Halogenation Oxidation 179 / 200The number of atoms in 4.2 g of nitrogen gas (N₂) is: 3.612 × 10²³ 6.02 × 10²³ 1.204 × 10²⁴ 1.806 × 10²³ 180 / 200The hybridization of carbon in ethyne (C₂H₂) is: sp sp² sp³ dsp² 181 / 200Which quantum number determines the shape of an orbital? Principal quantum number Magnetic quantum number Azimuthal quantum number Spin quantum number 182 / 200In the reaction: Zn + 2HCl → ZnCl₂ + H₂, zinc acts as: Oxidizing agent Reducing agent Catalyst Electrolyte 183 / 200The boiling point of water at 700 mmHg pressure is: 100°C More than 100°C Less than 100°C 0°C 184 / 200Which of the following has the highest boiling point? CH₄ C₂H₆ C₃H₈ C₄H₁₀ 185 / 200The rate of a chemical reaction generally: Increases with increase in temperature Decreases with increase in temperature Is unaffected by temperature First increases then decreases 186 / 200In the electrochemical series, the standard electrode potential is measured relative to: Calomel electrode Standard hydrogen electrode Silver-silver chloride electrode Zinc electrode 187 / 200Which salt solution has pH greater than 7? NaCl NH₄Cl CH₃COONa CuSO₄ 188 / 200The IUPAC name of CH₃-CH₂-CH(CH₃)-CHO is: 2-Methylbutanal 3-Methylbutanal Pentanal 2-Ethylpropanal 189 / 200For a reaction: 2A + B → Products, when concentration of B is doubled, the rate doubles. When concentration of A is doubled, the rate becomes four times. The rate law is: Rate = k[A][B] Rate = k[A][B]² Rate = k[A]²[B]² Rate = k[A]²[B] 190 / 200The process by which a piece of a chromosome breaks off and attaches to another chromosome is known as: Deletion Inversion Duplication Translocation 191 / 200The hormone that promotes cell elongation in plants is: Abscisic Acid (ABA) Cytokinin Auxin Ethylene 192 / 200In a population, the total aggregate of genes is called the: Genotype Genome Gene pool Gene frequency 193 / 200The movement of water from the soil into the root xylem, without entering the living cells, is through the: Symplast pathway Transmembrane pathway Active transport Apoplast pathway 194 / 200Which of the following is a disaccharide? Glucose Starch Fructose Sucrose 195 / 200A non-competitive inhibitor of an enzyme: Binds to the active site Increases the Km value Binds to a site other than the active site Is overcome by adding more substrate 196 / 200The part of the human ear that converts sound vibrations into electrical signals is the: Tympanic Membrane Cochlea Malleus, Incus, and Stapes Auditory Nerve 197 / 200In a food chain, grass is eaten by a grasshopper, which is eaten by a frog, which is eaten by a snake. The secondary consumer is the: Grass Frog Snake Grasshopper 198 / 200In a typical ecosystem, which trophic level has the maximum biomass? Producers Secondary Consumers Tertiary Consumers Primary Consumers 199 / 200The primary electron acceptor in Photosystem II (PSII) is: NADP+ Pheophytin Ferredoxin Cytochrome complex 200 / 200The part of the neuron that receives incoming signals from other neurons is the: Axon Dendrite Soma (cell body) Myelin sheath Your score isThe average score is 0% 0% Restart quiz