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A Level Biology Q&A Mastery Package

Uncover the intricacies of life sciences, genetics and ecosystems through a comprehensive collection of questions and answers. Dive into the world of cells, organisms, and ecological systems, enhancing your understanding of analytical skills.

44 items

Testing Your Biology Understanding with Q&A Excellence

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Biology Study of life Individual living thing organism Ecosystem all organisms living in a particular area All living organisms in an ecosystem make up a... community Population Localized group of individuals of one species Eukaryotic cels that contain membrane- enclosed organelles

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Premium Biology Exam Questions and Answers

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DNA is composed of building blocks called nucleotides In eukaryotic cells DNA has the appearance of a double helix What is the correct order for the hierarchy of biological organization from least to most complex molecule, organelle, cell, tissue, organ, organ system, organism, pop...

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Mastering Biology Final Exam Questions and Answers

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Falsifiable data can be collected that will support or reject the hypothesis Proximate explanation an explanation that provides the cause closest to, or immediately responsible for the results Ultimate explanation an explanation that provides a higher-level cause, which is often considered the...

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Mastering Biology Revision Questions and Answers

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A _____ cell contains membrane-enclosed organelles eukaryotic ____ are due to the arrangement and interactions of parts as com- plexity increases. emergent properties ____ lacks a nucleus or other membrane-enclosed organelles. prokaryotic ____ contain genetic material in the form of DNA (deoxy-...

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Mastering Biology Final Exam Questions and Expert Solutions

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Levels of organization Biosphere Ecosystem communities populations organisms Organs and organ systems Tissues Cells Organelles Molecules Biosphere Consists of all life on Earth and all the places where life exists Ecosystem consists of all the living things in a particular area, along wit...

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Mastering Biology Questions and Expert Solutions

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Chapter 1 Can Science Cure the Common Cold? Hypothesis possible explanation/proposing ideas must be testable and falsifiable Prediction if/then statement Biology the study of life How do we learn about Biology? Observing, Asking ?'s, Testing Discovery Science based on observations...

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Mastering Biology Exam Questions and Detailed Answers

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Taxonomy is Naming and classifying of species How do hypotheses differ from theories? Theories are more comprehensive than hypotheses. More than half of all known species are insects In what way(s) is the science of biology influencing and changing our culture? By helping us understand the re...

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Mastering Biology Study Set with Questions and Answers

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Desmosomes membrane protein complexes that strengthen the adhesion between adjacent animal cells, like rivets, to protect against pulling forces; bind cells together and function as anchors for fibers in the cytoskeleton Gap junctions small channels that form across the plasma membranes of adja...

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Module 1 Mastering Bio Questions and Answers

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Which of the following statements best describes what is meant by "emergence"? The whole is greater than the sum of the parts. Some properties and processes that are associated with life include all of the following except reductionism The two main forms of cells are prokaryotic and eukaryot...

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Mastering Biology Review Questions and Answers

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All of the following are part of a prokaryotic cell except: an endoplasmic reticulum Which of the following is a major cause of the size limits for certain types of cells? the need for a surface area of sufficient area to allow the cell's function Beginning within the nucleus, the first step le...

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Mastering Biology Test with Detailed Answers

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Adensosine triphosphate (ATP) a molecule composed of the sugar ribose, the base adenine, and three phosphate groups; the major energy carrier in cells. The last two phosphate groups are attached by "high-energy" bonds. Amino acid the individual subunit of which proteins are made, composed of ...

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Mastering Biology Test Bank with Expert Answers

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One part of the cell theory states that all cells come from _____. pre-existing cells In Pasteur's experiment, the purpose of the swan neck on the flask was to: trap cells from the air before they reached the growth medium Pasteur's results showed that: When growth medium is not contaminated b...

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Mastering Biology Exam Study Guide with Questions and Answers

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What is the mass number of an ion with 107 electrons, 159 neutrons, and a +1 charge? 267 The innermost electron shell of an atom can hold up to _____ electrons. A. 8 B. 1 C. 2 D. 32 E. 18 C Which of these relationships is true of an uncharged atom? A. The number of protons is equal t...

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300 + Mastering Biology Practice Questions and Answers

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Prokaryotic cells are found in the domain(s) _____. Bateria and Archaea In the five-kingdom system, prokaryotes are placed in the kingdom _____. Monera A human is classified in domain _____ and kingdom _____. Eukarya ... Animalia A rose bush is classified in domain _____ and kingdom _____. Eukary...

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Mastering Biology Study Questions and Answers

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A substance that cannot be broken down into other substances by ordinary chemical procedures Element What is a trace element required by most living organisms? Magnesium A chemical element required only in minute amounts by living organisms for normal growth. Trace Element Proton -Symbol "p...

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Biological Chemistry Revision Questions and Detailed Answers

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ch 2 A substance that cannot be broken down into other substances by ordinary chemical procedures is a(n) ________. element Which of the following is a trace element required by most living organisms? magnesium The innermost electron shell of an atom can hold up to _______ electrons. 2 Whic...

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Mastering Biology Final Exam Review Questions and Answers

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How is a community different from an ecosystem? A community consists of all of the interacting populations in an ecosystem. An ecosystem includes the non-living components that affect life as well as all of the interacting populations in a given area. Explain why methicillin resistant Staphloco...

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Mastering Biology Study Aid with Questions and Answers

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Hydrogen Most organic compounds contain carbon and _______ C-C bonds are as strong as C-O bonds why is life based on carbon compounds It can form a variety of carbon skeletons and host functional groups Why is carbon so important in biology Both can carbon form polar or nonpolar bonds The majo...

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Mastering Biology Quiz with Expert Solutions

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Animals that migrate great distances would obtain the greatest energetic benefit of storing chemical energy as _____. fats The "essential nutrients" for proper human nutrition include _____. calcium, sodium, potassium, and other minerals Which pair correctly associates a physiological proces...

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Mastering Biology Revision Questions and Expert Solutions

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Interphase Nucleoli are present during _____. Telophase Cytokinesis often, but not always, accompanies _____. Prophase Chromosomes become visible during _____. Anaphase Centromeres divide and sister chromatids become full-fledged chromosomes during _____. Prometaphase Spindle fibers attach to ...

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AQA A Level Biology Revision Questions and Detailed Answers

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Describe how you would use a biochemical test to show that a solution contained a nonreducing sugar, such as sucrose. [3] ,first reducing sugars test; boil with dilute HCl acid then Neutralise with NaHCǑ, add benedict and heat to 95 degrees C brick red ppt forms if reducing sugar is present D...

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AQA AS Level Biology Review Questions and Answers

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What are the three ways a pathogen can damage hosts cells? 1) rupturing them to release nutrients inside them 2) breaking down nutrients inside the cell for their own use. This starves and eventually kills the cell. 3) replicating inside the cells and bursting them when they're released What...

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AQA AS Level Biology Practice Questions and Answers 23/24

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What is RNA? ribonucleic acid MRNA and TRNA Single stranded Shorter AU CG What are biological molecules? molecules made and used by living organisms eg. Lipids, carbs, DNA, AT, water, inorganic ions What are the functions of carbohydrates? -energy source (respiration) -energy store (starch ...

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AQA A-Level Biology Paper 1 Revision Questions and Answers

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Large molecules often contain carbon. Why? they can readily form bonds with other carbon atoms. This forms a 'backbone'. Other atoms can then attach. Describe benedicts test for reducing sugars add equal volumes of the sugar sample and benedicts reagent. Heat the mixture in a water bath for ...

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A Level Biology Test Bank with Questions and Detailed Answers

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Transcription helix unzips by DNA polymerase Strands separate, acts as template Free RNA nucleotides attach to completmentary base Phosphate bonds form Pre-MRNA detaches Splicing=removes introns-non coding Translation Ribosome attaches to start condon TRNA with complementary anticodon pairs ...

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OCR A-Level Biology Modules with Questions and Answers

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Why do specimens need to be thin when observing them under a light microscope? to allow light to pass through Identify and explain the starch test add iodine dissolved in potassium iodide solution to the sample - positive test = blue-black - negative test = orange-brown Why is the structure ...

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AQA A Level Biology Exam Practice Questions and Answers

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How do biological molecules provide evidence for evolution? They all have similar molecules and use the same amino acids and DNA. What are monomers of carbohydrates called? Monosaccharides. Beta Glucose Alpha glucose Glucose formula C₆H₁₂O₆ Name of the bond between monosaccharides? ...

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OCR A Level Biology Study Set with Questions and Answers

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Abiotic components Components of an ecosystem that are non living Abiotic factors Non living components of an ecosystem that effect other living organisms Acetycholine Chemical that acts as a transmitter that diffuses across synaptic cleft Acetycholinesterase Enzyme in synaptic cleft that break...

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AQA Biology A-Level Paper 2 Revision Questions and Answers

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Describe and explain the steps in the light dependent reaction of photosynthesis 1. Photoionisation: light reaches chlorophyll in psii, which is absorbed by an electron, which becomes excited and moves to a higher energy level. 2. The electron passes to a carrier protein in the thylakoid membra...

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AQA A-level Biology Practice Questions with Expert Solutions

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Define variation Differences that exist between individuals In what ways can variation be caused? It can be caused by genetic factors, such as alleles from mutations. It can also be caused by the environment, such as climate. Most variation is caused by a combination of genetic factors and envi...

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AQA A-Level Biology- Biological Molecules Revision Questions and Answers

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What are monomers? Monomers are *small units* which are the components of larger molecules. What are polymers? Polymers are molecules made from *many monomers* joined together. What are examples of monomers? *Monosaccharides, amino acids* and *nucleotides* What are examples of polymers? *Po...

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AQA A-Level Biology (new spec) - Biological Molecules Review Questions and Answers

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Monomers Small basic molecular units Examples of monomers monosaccharides, amino acids and nucleotides Polymers Large complex molecules composed of long chains of monomers joined together Examples of polymers Carbohydrates, proteins and nucleic acids What type of sugar is glucose? Hexose How ...

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A-Level Biology – OCR Test Questions with Detailed Answers

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What is a light microscope used for? Observing living and dead specimens What are the pros and cons of a light microscope? Pros: Cheap, portable, easy to use, can study living specimens. Cons: Limited magnification, poor resolution. What is a laser scanning confocal microscope used for? Creating...

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A Level Biology- Succession Practice Questions and Answers

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What does it mean when ecosystems are described as dynamic? they are constantly changing What is succession? the process by which ecosystems can change over time Where does primary succession take place? an area of land that has been newly formed or exposed meaning there is no soil or organic ...

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AQA A Level Biology – Respiration Review Questions and Answers

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What is the purpose of respiration ? To release energy from glucose To produce ATP What is the general equation for aerobic respiration ? 6O2 + C6H1206 --> 6H2O + 6CO2 + energy What do plants need energy for ? (name 5) 1. Photosynthesis 2. Active transport of minerals via roots 3. DNA repl...

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AQA A-Level Biology – Cells Practice Questions and Answers

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Structure of Nucleus. 1. Nuclear envelope: double membrane surrounding nucleus, outer membrane continuous with the (R)ER of the cell. 2. Nuclear pores: allow the passage of larger molecules, such as mRNA, out of the nucleus. 3. Nucleoplasm: granular, jelly-like material making up the bulk of t...

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A level Biology Practical Exam Questions and Answers

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Explain why the data in the table above are described as processed results. (1) Calculations made from the raw data Describe how you would use a 1.0 mol dm−3 solution of sucrose to produce 30 cm3 of a 0.15 mol dm−3 solution of sucrose (2) *Use ratios 0.15 : 0.85 Add 4.5 cm3 of (1.0 mol d...

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AQA Biology A-Level- Exchange Practice Questions and Answers

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What affects the amount of material that is exchanged in an organism? size and metabolic rate- higher metabolic rate= more materials exchanged Name 4 things that need to be exchanged between an organism and their environment. - respiratory gases - nutrients - excretory products - heat How d...

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AQA A Level Biology – Mutation Revision Questions and Expert Solutions

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What is a mutation? A change in the DNA sequence What are the 6 types of mutation? (Things that happen with bases) Substitution Deletion Addition Duplication Inversion Translocation What is a hereditary mutation? When a gameate containing a mutation for a type of cancer or genetic disorder...

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AQA A-Level Biology Practice Test with Questions and Detailed Answers

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Why are Microorganisms able to perform exchange via their surface? • have a large surface area to volume ratio • have a short diffusion distance • have low demand How do Microorganisms Obtain Nutrients & Remove Waste? • by exchange via their surface • nutrients (e.g. glucose, oxyge...

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AQA A Level Biology Exam Sample Questions and Answers

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What is photosynthesis? Occurs ONLY in plants. The plant makes glucose from light, carbon dioxide and water What is the equation for photosynthesis? 6CO2 + 6H2O -> C6H12O6 + 6O2 How is energy stored in plants? In the glucose until plants release it by respiration What is a metabolic pathway?...

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AQA A Level Biology Review Questions and Answers

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Define monomer The smaller units from which larger molecules are made (via condensation reactions). List examples of monomers Monosaccharides Amino acids Nucleotides Define polymer Molecules made from large number of monomers joined together (via condensation reactions). Define Condensation...

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AQA A Level Biology - Survival and Response Revision Questions and Answers

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What is a stimulus? A change in the environment of an organism What is a tactic response? Directional movement in response to a stimulus What is a kinetic response? Non directional random movement in response to a stimulus What is a positive and negative taxis? Positive taxis- organism moves to...

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AQA A - Level Biology Exam Study Questions with Expert Solutions

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Tissue a group of specialised cells Organ made of different tissues Organ system different organs working together What is an Animal Cell made of? 1. Organelles (nucleus, endoplasmic reticulum, golgi body, lysosomes, mitochondria, ribosomes) - all have membrane except the ribosomes 2. Cytopl...

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