Biology EOC Review Flashcards
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Questions and Answers

What is activation energy?

  • Energy needed to start a chemical reaction. (correct)
  • Energy released during a chemical reaction.
  • Energy stored in chemical bonds.
  • Energy required to keep a reaction going.
  • What is active transport?

    Movement of molecules across a membrane requiring energy to be expended by the cell.

    What is adaptation?

    Inherited characteristic that increases an organism's chance of survival.

    What is an allele?

    <p>Different forms of a gene; could be dominant or recessive.</p> Signup and view all the answers

    What is an amino acid?

    <p>Basic building blocks of proteins.</p> Signup and view all the answers

    What are analogous structures?

    <p>Structures that do not have a common evolutionary origin but are similar in form or function.</p> Signup and view all the answers

    What happens during anaphase?

    <p>The third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles.</p> Signup and view all the answers

    What is an antibiotic?

    <p>Compound that blocks the growth and reproduction of bacteria.</p> Signup and view all the answers

    What is an antibody?

    <p>A substance produced by the body that destroys or inactivates a pathogen.</p> Signup and view all the answers

    What is an antigen?

    <p>Substance that stimulates the production of an antibody.</p> Signup and view all the answers

    What are archaea?

    <p>Domain of unicellular prokaryotes that have cell walls that do not contain peptidoglycan.</p> Signup and view all the answers

    What is ATP?

    <p>A nucleotide that stores and transfers energy within cells.</p> Signup and view all the answers

    What is an autotroph?

    <p>Organism that can capture energy from sunlight or chemicals and use it to produce its own food.</p> Signup and view all the answers

    What is bacteria?

    <p>Domain of unicellular prokaryotes that have cell walls containing peptidoglycans.</p> Signup and view all the answers

    What is a bacteriophage?

    <p>Virus that infects bacteria.</p> Signup and view all the answers

    What is base deletion?

    <p>Mutation which results in the loss of nucleotide pairs in a gene.</p> Signup and view all the answers

    What is base insertion?

    <p>Mutation which results in the addition of nucleotide pairs in a gene.</p> Signup and view all the answers

    What is base-pair substitution?

    <p>A type of point mutation where one nucleotide and its partner are replaced by another pair of nucleotides.</p> Signup and view all the answers

    What is a behavioral adaptation?

    <p>An inherited behavior that helps an organism survive.</p> Signup and view all the answers

    What is binary fission?

    <p>Asexual reproduction in prokaryotes by which one cell divides into two identical cells.</p> Signup and view all the answers

    What is a fetus?

    <p>An unborn or unhatched vertebrate in the later stages of development.</p> Signup and view all the answers

    What is fever?

    <p>A rise in the temperature of the body.</p> Signup and view all the answers

    What is fitness?

    <p>The ability of an individual to survive and reproduce in its specific environment.</p> Signup and view all the answers

    What is a food chain?

    <p>A series of steps in which organisms transfer energy by eating and being eaten.</p> Signup and view all the answers

    What is a food web?

    <p>A diagram that shows the feeding relationships between organisms in an ecosystem.</p> Signup and view all the answers

    What is a fossil?

    <p>The remains or an impression of a plant or animal that existed in a past geological age.</p> Signup and view all the answers

    What is a gamete?

    <p>Egg or sperm sex cell that contains a single set of chromosomes (haploid).</p> Signup and view all the answers

    What is a gene?

    <p>Sequence of DNA that codes for a protein and thus determines a trait.</p> Signup and view all the answers

    What is binomial nomenclature?

    <p>Classification system in which each species is assigned a two-part scientific name.</p> Signup and view all the answers

    What is biodiversity?

    <p>The variety of different species in a given area.</p> Signup and view all the answers

    What is a biogeochemical cycle?

    <p>Process in which elements, chemical compounds, and other forms of matter are passed from one organism to another.</p> Signup and view all the answers

    What is biomass?

    <p>The total amount of living matter within a given trophic level.</p> Signup and view all the answers

    What is a capsid?

    <p>The outer covering of protein surrounding the nucleic acid of a virus.</p> Signup and view all the answers

    What is a carbohydrate?

    <p>Organic compound used by cells to store and release energy.</p> Signup and view all the answers

    What is the carbon cycle?

    <p>The organic circulation of carbon from the atmosphere into organisms and back again.</p> Signup and view all the answers

    What is a carnivore?

    <p>A consumer that only eats other consumers.</p> Signup and view all the answers

    What is a catalyst?

    <p>Substance that speeds up the rate of a chemical reaction.</p> Signup and view all the answers

    What is a cell?

    <p>Basic unit of life.</p> Signup and view all the answers

    What is the cell cycle?

    <p>The cycle of growth and reproduction of a cell, consisting of interphase and mitosis.</p> Signup and view all the answers

    What is cell division?

    <p>The process by which a cell divides into two new daughter cells.</p> Signup and view all the answers

    What is the cell membrane?

    <p>The lipid bilayer that forms the outer boundary of the cell.</p> Signup and view all the answers

    What is the cell wall?

    <p>A rigid structure that surrounds the cell membrane and provides support.</p> Signup and view all the answers

    What is cellular respiration?

    <p>Process that releases energy by breaking down glucose in the presence of oxygen.</p> Signup and view all the answers

    What is a centriole?

    <p>Organizes the spindle fibers to separate chromosomes during animal cell mitosis.</p> Signup and view all the answers

    What is a centromere?

    <p>Area where the chromatids of a chromosome are attached.</p> Signup and view all the answers

    What is chlorophyll?

    <p>Green pigment in plants that absorbs light energy.</p> Signup and view all the answers

    What is a chloroplast?

    <p>Organelle in plants that captures sunlight and converts it into chemical energy.</p> Signup and view all the answers

    What is a chromatid?

    <p>One of two identical 'sister' parts of a duplicated chromosome.</p> Signup and view all the answers

    What is gradualism?

    <p>A model of evolution in which gradual change leads to biological diversity.</p> Signup and view all the answers

    What are guard cells?

    <p>Pairs of cells that surround stomata and control their opening and closing.</p> Signup and view all the answers

    What is a habitat?

    <p>The place where an organism lives.</p> Signup and view all the answers

    What is the haploid number?

    <p>Half the normal number of chromosomes; found in sex cells.</p> Signup and view all the answers

    What is a herbivore?

    <p>Consumer that eats only producers; also called a primary consumer.</p> Signup and view all the answers

    What does heterozygous mean?

    <p>Having two different alleles for a trait.</p> Signup and view all the answers

    What is homeostasis?

    <p>Process by which organisms maintain a relatively stable internal environment.</p> Signup and view all the answers

    What is a chromosome?

    <p>Condensed threads of genetic material formed from chromatin.</p> Signup and view all the answers

    What is a climax community?

    <p>A relatively stable long-lasting community reached in a successional series.</p> Signup and view all the answers

    What is a codon?

    <p>In RNA, a three-base 'word' that codes for one amino acid.</p> Signup and view all the answers

    What is commensalism?

    <p>Symbiotic relationship in which one member benefits and the other is neither helped nor harmed.</p> Signup and view all the answers

    What is competition?

    <p>The struggle between organisms to survive in a habitat with limited resources.</p> Signup and view all the answers

    What is a concentration gradient?

    <p>Difference in concentration of a substance on two sides of a membrane.</p> Signup and view all the answers

    What is a conclusion?

    <p>A summary of what you have learned from an experiment.</p> Signup and view all the answers

    What is a consumer?

    <p>An organism that obtains energy by feeding on other organisms.</p> Signup and view all the answers

    What is crossing over?

    <p>Exchange of genetic material between homologous chromosomes during prophase I of meiosis.</p> Signup and view all the answers

    What is cytokinesis?

    <p>Division of the cytoplasm.</p> Signup and view all the answers

    What is cytoplasm?

    <p>A jellylike fluid inside the cell in which organelles are suspended.</p> Signup and view all the answers

    What is data?

    <p>Information gathered from observations.</p> Signup and view all the answers

    What is a decomposer?

    <p>Organism that breaks down and obtains energy from dead organic matter.</p> Signup and view all the answers

    What is deforestation?

    <p>The removal of trees.</p> Signup and view all the answers

    What is differentiation?

    <p>Process in which cells become specialized in structure and function.</p> Signup and view all the answers

    What is diffusion?

    <p>The process by which molecules move from an area of higher concentration to an area of lower concentration.</p> Signup and view all the answers

    What is a dihybrid cross?

    <p>Genetic cross using two traits with two alleles each.</p> Signup and view all the answers

    What is the diploid number?

    <p>Cell condition in which two of each type of chromosome are present.</p> Signup and view all the answers

    What is disturbance?

    <p>A discrete event that disrupts an ecosystem or community.</p> Signup and view all the answers

    What is DNA?

    <p>Deoxyribonucleic acid, the material that contains inherited characteristics.</p> Signup and view all the answers

    What is a kingdom?

    <p>Large taxonomic group, consisting of closely related phyla.</p> Signup and view all the answers

    What is learned behavior?

    <p>A behavior an animal learns from its parents.</p> Signup and view all the answers

    What is a lipid?

    <p>Macromolecule made mainly from carbon and hydrogen atoms.</p> Signup and view all the answers

    What is a lysosome?

    <p>Cell organelle filled with enzymes needed to break down certain materials.</p> Signup and view all the answers

    What is a macromolecule?

    <p>Any large complex organic molecule.</p> Signup and view all the answers

    What is meiosis?

    <p>Cell division that produces reproductive cells in sexually reproducing organisms.</p> Signup and view all the answers

    What is mRNA?

    <p>Messenger RNA; type of RNA that carries instructions from DNA to the ribosome.</p> Signup and view all the answers

    What is metaphase?

    <p>Second phase of mitosis, during which the chromosomes line up across the center of the cell.</p> Signup and view all the answers

    What is a domain?

    <p>Most inclusive taxonomic category; larger than a kingdom.</p> Signup and view all the answers

    What does dominant mean?

    <p>Trait that will show up in an organism's phenotype if gene is present.</p> Signup and view all the answers

    What is a double helix?

    <p>Two strands of nucleotides wound around each other; structure of DNA.</p> Signup and view all the answers

    What is ecological succession?

    <p>Gradual change in living communities that follows a disturbance.</p> Signup and view all the answers

    What is an ecosystem?

    <p>Living and nonliving things in an environment, together with their interactions.</p> Signup and view all the answers

    What is an egg?

    <p>Female sex cell.</p> Signup and view all the answers

    What is an embryo?

    <p>Organism in its early stage of development.</p> Signup and view all the answers

    What is embryology?

    <p>Study of multicellular organisms as they develop from fertilized eggs.</p> Signup and view all the answers

    What is endocytosis?

    <p>Process by which a cell takes in a substance by surrounding it with the cell membrane.</p> Signup and view all the answers

    What is the endoplasmic reticulum?

    <p>A system of membranes that assists in the production, processing, and transport of proteins.</p> Signup and view all the answers

    What is an energy pyramid?

    <p>A diagram that shows the amount of energy that moves from one feeding level to another.</p> Signup and view all the answers

    What is an enzyme?

    <p>Protein that speeds up a chemical reaction.</p> Signup and view all the answers

    What is equilibrium?

    <p>When the concentration of a solute is the same throughout a solution.</p> Signup and view all the answers

    What is an eukaryote?

    <p>A cell that contains a nucleus and membrane-bound organelles.</p> Signup and view all the answers

    What is eutrophication?

    <p>Rapid growth of algae in bodies of water due to high levels of nitrogen.</p> Signup and view all the answers

    What is evolution?

    <p>The gradual change in a species over time.</p> Signup and view all the answers

    What is exocytosis?

    <p>Process by which vesicles release their contents outside the cell.</p> Signup and view all the answers

    Study Notes

    Activation Energy

    • Energy required to initiate a chemical reaction, reduced by enzymes.

    Active Transport

    • Movement of molecules across a cell membrane that necessitates energy expenditure.

    Adaptation

    • Inherited traits enhancing an organism's survival chances.

    Allele

    • Variants of a gene, which can be dominant or recessive.

    Amino Acid

    • Fundamental components that make up proteins.

    Analogous Structures

    • Structures sharing similar functions or forms but lacking a common evolutionary origin.

    Anaphase

    • Third stage of mitosis where chromosome pairs are pulled apart to opposite poles.

    Antibiotic

    • Chemical substances that hinder bacterial growth and reproduction.

    Antibody

    • Body-produced substances that neutralize pathogens upon entry.

    Antigen

    • Typically a foreign substance that triggers antibody production.

    Archaea

    • Domain consisting of unicellular prokaryotes characterized by the absence of peptidoglycan in cell walls.

    ATP

    • Nucleotide crucial for storing and transferring energy within cells.

    Autotroph

    • Organisms capable of producing energy-rich food from sunlight or chemicals, known as producers.

    Bacteria

    • Domain of unicellular prokaryotes with peptidoglycan-containing cell walls.

    Bacteriophage

    • A virus that specifically infects bacteria.

    Base Deletion

    • Mutation involving the loss of nucleotide pairs leading to significant protein changes.

    Base Insertion

    • Mutation that introduces additional nucleotide pairs, affecting protein function.

    Base-Pair Substitution

    • A point mutation where one nucleotide pair is replaced by another.

    Behavioral Adaptation

    • Inherited behaviors aiding survival, such as predator evasion and mating strategies.

    Binary Fission

    • Asexual reproduction method in prokaryotes where one cell divides into two identical cells.

    Fetus

    • Later developmental stage of an unborn or unhatched vertebrate, displaying features of a mature animal.

    Fever

    • Elevated body temperature indicating a physiological response.

    Fitness

    • An individual's capability to survive and reproduce in a specific environment.

    Food Chain

    • Sequential transfer of energy through organisms as they consume one another.

    Food Web

    • Interconnected diagram demonstrating feeding relationships within an ecosystem.

    Fossil

    • Remnants or impressions of ancient organisms preserved in geological formations.

    Gamete

    • Reproductive cells (egg or sperm) containing half the typical chromosome number.

    Gene

    • DNA sequence that encodes for proteins, influencing traits.

    Binomial Nomenclature

    • Two-part scientific naming system for species, comprising genus and species names.

    Biodiversity

    • The variety of species present in a specific ecosystem.

    Biogeochemical Cycle

    • A continuous cycle involving the movement of elements and compounds among living organisms and the environment.

    Biomass

    • Overall quantity of living matter at each trophic level in an ecosystem.

    Capsid

    • Protein shell encasing the nucleic acid of a virus.

    Carbohydrate

    • Organic compounds serving as energy sources, composed of carbon, hydrogen, and oxygen.

    Carbon Cycle

    • The process of carbon circulation between the atmosphere and living organisms.

    Carnivore

    • Organisms that exclusively consume other consumers.

    Catalyst

    • Substances like enzymes that enhance chemical reaction rates.

    Cell

    • The fundamental unit of life.

    Cell Cycle

    • Series of growth and reproductive phases in cells: interphase and mitosis (including cytokinesis).

    Cell Division

    • The division process resulting in two daughter cells from a single parent cell.

    Cell Membrane

    • Lipid bilayer forming the cell's outer boundary.

    Cell Wall

    • Rigid structure surrounding the cell membrane, providing support.

    Cellular Respiration

    • Energy-releasing process involving glucose breakdown in the presence of oxygen.

    Centriole

    • Structures that arrange spindle fibers during animal cell mitosis.

    Centromere

    • Region where sister chromatids of a chromosome are connected.

    Chlorophyll

    • Green pigment vital for absorbing sunlight in plants for photosynthesis.

    Chloroplast

    • Organelles in plant cells that convert sunlight into chemical energy.

    Chromatid

    • One of two identical strands of a duplicated chromosome.

    Gradualism

    • Evolution model proposing slow, gradual changes lead to diversity over time.

    Guard Cell

    • Specialized cells that regulate the opening and closing of stomata.

    Habitat

    • Specific environment where an organism resides.

    Haploid Number

    • Condition where a cell contains half the total chromosome count, typical in gametes.

    Herbivore

    • Organisms that solely consume producers.

    Heterozygous

    • Possessing two different alleles for a given trait.

    Homeostasis

    • Maintaining a stable internal environment by organisms.

    Chromosome

    • Condensed form of genetic material during cell division.

    Climax Community

    • Ecosystem stage characterized by stability and longevity reached after succession.

    Codon

    • Three-nucleotide sequence in RNA that corresponds to specific amino acids.

    Commensalism

    • Symbiotic relationship where one organism benefits while the other remains unaffected.

    Competition

    • Struggle for survival among organisms in resource-limited habitats.

    Concentration Gradient

    • Disparity in substance concentration across a membrane.

    Conclusion

    • Summarization of learning outcomes from an experimental process.

    Consumer

    • Organisms that derive energy by feeding on others.

    Crossing Over

    • Genetic material exchange between homologous chromosomes during meiosis.

    Cytokinesis

    • Splitting of the cytoplasm following cell division.

    Cytoplasm

    • Gel-like substance within cells where organelles reside.

    Data

    • Information collected through observation.

    Decomposer

    • Organisms that break down dead organic materials for energy.

    Deforestation

    • Clearing or removal of forest areas.

    Differentiation

    • Process by which cells attain specialized structures and functions.

    Diffusion

    • Movement of molecules from higher to lower concentration areas, occurring passively.

    Dihybrid Cross

    • Genetic cross examining two traits with two alleles each.

    Diploid Number

    • Condition with two of each type of chromosome present.

    Disturbance

    • Events that disrupt ecosystems, including natural disasters and human activities.

    DNA

    • Deoxyribonucleic acid containing hereditary information.

    Kingdom

    • Major taxonomic category consisting of closely related phyla.

    Learned Behavior

    • Behaviors acquired through parental teaching.

    Lipid

    • Macromolecules primarily composed of carbon and hydrogen; includes fats and oils.

    Lysosome

    • Organelle with enzymes for digesting cellular materials.

    Macromolecule

    • Any large, complex organic molecule.

    Meiosis

    • Cell division that results in gametes for sexual reproduction.

    mRNA

    • Messenger RNA that conveys genetic instructions from DNA to ribosomes.

    Metaphase

    • Second mitotic phase where chromosomes align at the cell's equator.

    Domain

    • Broad taxonomic category encompassing kingdoms.

    Dominant

    • Trait that appears in an organism's phenotype when present.

    Double Helix

    • Structure of DNA formed by two intertwined nucleotide strands.

    Ecological Succession

    • Progressive changes in community composition after disturbances.

    Ecosystem

    • Interaction of living and non-living components in an environment.

    Egg

    • Female reproductive cell.

    Embryo

    • Early developmental stage of an organism.

    Embryology

    • Study of organism development from fertilization to maturity.

    Endocytosis

    • Cell process for substance intake via membrane enveloping; requires energy.

    Endoplasmic Reticulum

    • Membrane system aiding protein production, processing, and lipid synthesis.

    Energy Pyramid

    • Diagram illustrating energy transfer between feeding levels in ecosystems.

    Enzyme

    • Proteins that enhance the rate of biochemical reactions.

    Equilibrium

    • Condition where solute concentration is uniform across a solution.

    Eukaryote

    • Cells characterized by the presence of a nucleus and membrane-bound organelles.

    Eutrophication

    • Algal proliferation in water bodies, driven by excess nitrogen and phosphate.

    Evolution

    • Gradual transformation of species over time.

    Exocytosis

    • Vesicular process releasing contents outside of the cell; requires energy.

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    Prepare for your Biology End of Course (EOC) exam with these flashcards covering essential concepts. Explore key terms such as activation energy, active transport, and adaptation, along with their definitions. This resource will help reinforce your understanding of biological principles and improve your exam readiness.

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