Keystone Biology Practice Exam

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• What energy transformation most likely occurs first in a plant cell organelle?
• Which of the following describes the function of agriculture?
• What is the name for a sequence of nucleotides in DNA that codes for a specific hereditary trait?
• Which molecular process directly follows the transcription of a gene?
• What genetic process occurs during anaphase I of meiosis that increases genetic variability?
• What constitutes a polymer?
• What is the most likely outcome of a mutation in genes affecting coat color in deer?
• In genetics, what term refers to the expression of both alleles in a heterozygous genotype?
• Which type of cellular transport occurs against the concentration gradient?
• What is the term for a complex network of interrelated food chains showing the flow of energy between organisms?
• What is the process called when a cell releases substances to the extracellular environment?
• What is a variation of a gene's nucleotide sequence known as?
• What term describes a series of predictable and orderly changes within an ecosystem over time?
• What is the function of the Rough Endoplasmic Reticulum?
• Which scientific study focuses primarily on the principles of inheritance?
• What molecule provides energy for cellular reactions and processes?
• Which term describes a pattern of inheritance in which offspring have a blended phenotype?
• What process involves the transformation of chemical energy from food into adenosine triphosphate (ATP)?
• During which part of cell division does cytokinesis occur?
• What does crossing-over contribute to in the process of meiosis?
• What characterizes a macromolecule?
• Which biological macromolecule encodes genetic information and can self-replicate?
• Which term describes a substance that speeds up a chemical reaction without being consumed in the process?
• Which of the following terms best describes organisms in an ecosystem that are dependent on water?
• Which process requires energy input to move substances against a concentration gradient?
• Which process describes how organisms with certain inherited traits have better chances of survival and reproduction?
• What is the process by which solar radiation is captured by chlorophyll to produce energy in the form of carbohydrates?
• What does the increase in a field's nitrogen content followed by increased producer productivity likely indicate?
• What role does the rough endoplasmic reticulum play in assisting the Golgi apparatus?
• What causes capillary action in plants?
• What is the process called when mRNA is decoded to produce a sequence of amino acids for protein synthesis?
• Which of the following is a potential concern regarding genetically modified plants?
• Which component of the cell is primarily responsible for the synthesis of proteins?
• What is the primary role of carrier proteins in cellular membranes?
• How does carbon's ability to form four bonds make it uniquely suited to form macromolecules?
• In which process is RNA decoded to synthesize a polypeptide chain?
• What structural role does glycerol play in lipids?
• What type of inheritance results in one allele's effect being expressed fully in both homozygous and heterozygous genotypes?
• What is the scientific study of life referred to as?
• What occurs during interphase in the cell cycle?
• Which of the following describes the series of events that leads to cell division and duplication?
• What is the term for a molecule that can react with other molecules to form a polymer?
• What term describes the area where an organism typically can meet its basic needs for survival?
• Which term describes a nonliving factor in an ecosystem?
• Which cellular process involves the replication of DNA and the division of the nucleus?
• What is referred to as a limiting factor in an ecosystem?
• What is the process by which particles move from an area of low concentration to an area of high concentration using energy?
• What term describes a simplified path that illustrates the transfer of potential chemical energy from one organism to another?
• What is the process called that results in the formation of gametes with half the normal number of chromosomes?
• Which biological process allows an organism to maintain a stable internal environment?
• Which of the following components is NOT typically found in prokaryotic cells?
• Which process primarily occurs in the ribosomes during protein synthesis?
• What refers to the failure of sister chromatids to separate during mitosis or meiosis?
• During which phase do chromosomes condense and the nuclear envelope breaks down?
• Which statement describes a cell process common to both eukaryotic and prokaryotic cells?
• What is the outcome of active transport across a plasma membrane?
• What is the term used to describe an organism that is associated with a water environment?
• What helps to preserve genetic information during DNA replication?
• What branch of zoology studies the early development of living organisms?
• What property of water is described as the attraction between like molecules?
• What term refers to the deliberate insertion, alteration, or deletion of genes in cells for therapeutic purposes?
• What likely caused the variations in mammalian forelimbs that were present in their common ancestor?
• What type of organism is specifically defined as a consumer?
• What type of biological macromolecule carries genetic information and is composed of elements such as carbon, hydrogen, nitrogen, oxygen, and phosphorus?
• Which type of organism is characterized by having a simple cell structure without a membrane-bound nucleus?
• What does it mean for water to be polar?
• What kind of bonds does ATP have that release energy when broken?
• What kind of trait is controlled by two or more genes located at different loci?
• What activity is most likely used by a fish to maintain homeostasis?
• Which term is used to describe molecules that are the building blocks of proteins?
• Which term describes a system composed of organisms and nonliving components of an environment?
• What term refers to the observable characteristics of an organism resulting from the interaction of its genotype with the environment?
• Which type of macromolecule serves as the main energy source for living organisms?
• What is the basic unit of structure and function for all living organisms?
• What best describes ecological succession?
• What is the effect of the low density of frozen water in a lake?
• What is the role of a decomposer in an ecosystem?
• During which stage of protein synthesis is the mRNA used to synthesize a protein?
• Which organelle is responsible for processing proteins in eukaryotic cells?
• What is true regarding an isotonic solution?
• What type of transport requires energy to move substances across a cell membrane?
• What is the term for a subunit within a cell that performs a specialized function?
• What is the final phase of the cell cycle known for dividing the cytoplasm?
• What does it mean when a substance is described as impermeable?
• What is the primary purpose of cellulose in plants?
• What is the main function of DNA?
• What is the process in which a cell engulfs extracellular material by inwardly folding its plasma membrane?
• What defines the Smooth Endoplasmic Reticulum?
• What is the lowest taxonomic level of biological classification that includes organisms capable of reproduction resulting in fertile offspring?
• Which process involves the conversion of chemical energy into usable energy in cells?
• What macromolecule contains the principal components of living organisms and serves various structural and regulatory roles?
• What term describes organisms that contain a membrane-bound nucleus and specialized organelles?
• What term describes molecules that are the building blocks of polymers?
• Which structure in a cell is responsible for energy production?
• What do we call the phase of the cell cycle where the cell prepares for division?
• What is an example of a vestigial structure in humans?
• Which organelle is responsible for photosynthesis in plant cells?
• What concept describes the interaction of energy flow and nutrient cycles within ecosystems?
• What is the process of transporting materials across a plasma membrane without the use of energy called?
• What is an organelle?
• What is the term for the competition between organisms for resources like territory, mates, and food?
• What is the genotype of a red-flowering plant in a species where red flower color is dominant?
• Which type of selection favors individuals at both extremes of a trait continuum?
• How do sodium and potassium ions move across a cell membrane compared to glucose?
• What does a frame-shift mutation most likely cause in the resulting protein?
• Which of the following statements best characterizes lipids?
• What process describes the movement of particles from high to low concentration?
• Which component is vital for the function of enzymes as biological catalysts?
• Which process is involved in transitioning organic materials into usable fuel?
• Which process refers to the change in allele frequencies within a population over generations?
• What is the major role of lipids in biological systems?
• Which phase of the cell cycle lasts the longest and allows the cell to prepare for division?
• What mutation occurs when one or more nucleotides are added or removed in a way that is not divisible by three?
• What term describes the observable expression of a genotype?
• Which process involves the changing of organic matter into other chemical forms, such as fuels?
• What is the primary benefit of biodiversity in ecosystems?
• What is the primary function of ribosomes in a cell?
• Which statement represents a testable hypothesis about a pond ecosystem?
• What is the primary function of the nucleus in eukaryotic cells?
• What process involves using a nucleotide sequence of a gene to produce a functional product like protein or RNA?
• In the context of ecology, what does an ecosystem primarily encompass?
• Which statement is true about active transport?
• What is the role of decomposers in an ecosystem?
• What cellular structure distinguishes eukaryotic cells from prokaryotic cells?
• Which process best describes the maintenance of internal conditions despite external changes?
• What term defines the position of an organism in relation to the flow of energy and inorganic nutrients in an ecosystem?
• What type of genetic mutation results in a change in the amino acid sequence of a protein without altering its function?
• What role does an enzyme play in a metabolic reaction?
• What is the term for the process in which genetic material is passed from parents to offspring?
• What is the overall process called in which amino acids are arranged to form proteins?
• In a biological context, what is the definition of 'species'?
• What term describes the measure of the relative frequency of an allele at a genetic locus in a population?
• What is one of the primary functions of the mitochondrion?
• What is the focus of the study known as bioenergetics?
• What is the primary role of the cell membrane?
• How can a change in pH affect an enzyme activity?
• What is the definition of meiosis?
• Which term describes the movement of abiotic factors between living and nonliving components within ecosystems?
• In a hypertonic solution, water moves ____ the cell.
• During which phase of cell division do chromosomes line up in the middle of the cell?
• Which characteristic is shared by all prokaryotes and eukaryotes?
• What type of interaction occurs between a snapping turtle and small fish, given that the turtle uses its tongue to attract them?
• What term describes a species that no longer has any known living individuals?
• What kind of proteins are synthesized by ribosomes attached to the rough endoplasmic reticulum?
• In genetics, what represents two alleles that are neither dominant nor recessive?
• What occurs during the anaphase of mitosis?
• What field of study focuses on the relationships between organisms and their interactions with the environment?
• A polymer with a high molecular mass that includes carbohydrates, lipids, proteins, and nucleic acids is known as what?
• Which term refers to the zone of life on Earth comprising the sum total of all ecosystems?
• Which statement describes a similarity between photosynthesis and cellular respiration?
• Which process synthesizes messenger RNA (mRNA) using genetic information from DNA as a template?
• What are coiled DNA structures associated with proteins called?
• What is the final stage of cell division where the nucleus reforms and DNA loosens?
• What occurs during anaphase of cell division?
• What is the artificial cultivation of food, fiber, and other goods called?
• Which of the following represents the sum of all ecosystems on the planet?
• What is the primary purpose of gene therapy?
• What is DNA replication?
• G1 phase is primarily about cells _______________.
• What best describes the role of the rough endoplasmic reticulum in the cell?
• Which of the following elements is NOT a component of nucleic acids?
• What is the longest phase of the cell cycle?
• Which term best characterizes the scientific study that encompasses all forms of life?
• What does the concentration gradient refer to in a solution?
• Which term refers to organisms that feed on dead and decaying matter?
• What is the pH scale used to measure?
• What do we call a physical characteristic in organisms that appears to have lost its original function through evolution?
• What is the role of mRNA in the process of transcription?
• Which of these processes is involved in the formation of gametes?
• Which process is responsible for increasing genetic variation in a population?
• What effect does agricultural runoff containing fertilizers most likely have on algae populations in lakes and streams?
• What is the role of the Golgi apparatus in a eukaryotic cell?
• Which functional characteristic distinguishes proteins from carbohydrates?
• How does nitrogen typically return from the soil to the atmosphere?
• What is a homologous structure?
• What type of cellular respiration occurs in the absence of oxygen?
• What type of nuclear division results in two somatic cells with the same genetic complement as the original cell?
• What process involves the development of new species from preexisting species?
• What type of organic compounds are primarily composed of carbon and hydrogen and serve as a source of stored energy?
• What term describes the permanent movement of genes into or out of a population, leading to changes in allele frequencies?
• What type of mutation involves a loss of a segment of a chromosome?
• What type of chemical reaction do catalysts influence?
• Which type of mutation does NOT change the amino acid sequence of the resulting protein?
• Which molecule is the primary carrier of genetic information?
• What is the term for the intermolecular attraction between unlike molecules?
• What do you call a permanent, transmissible change in genetic material?
• Which molecule was most likely used by a protein in a cell membrane as an energy source to move sodium and potassium ions?
• What does not occur during prophase?
• What term refers to the total surroundings of an organism or a group of organisms?
• Which of the following correctly defines osmosis?
• Which of the following is an example of a trophic level?
• Which two monomers combine to create lipids?
• Which term refers to a physical structure that is similar in function but different in form and inheritance across multiple species?
• Which protein increases the rate of a chemical reaction without being consumed in the process?
• What important energy molecule allows active transport to occur?
• Which term describes a community of living organisms and their interactions with the environment?
• What is the main focus of studying ecological succession?
• Which two structures are common to both prokaryotic and eukaryotic cells?
• Which organelle in eukaryotic cells is responsible for maintaining the integrity of genetic material?
• What term describes the genetic makeup of an organism with respect to one or more traits?
• If a child has type A blood and the father has type AB blood, which are all the possible phenotypes of the mother?
• Which term refers to a scientifically testable explanation for an observed phenomenon?
• What defines the ecological role of a species in its environment?
• Facilitated diffusion needs the help of what to move large/charged molecules?
• Which statement best describes a difference between mitosis and meiosis?
• What type of specialized cell is used in sexual reproduction and contains half the normal number of chromosomes?
• What type of macromolecule contains atoms of carbon, hydrogen, and oxygen in a 1:2:1 ratio?
• Diffusion moves molecules from a ___ concentration to a ____ concentration.
• What mechanism is most likely responsible for preventing eastern and western spotted skunks from interbreeding?
• Which term refers to traits passed down from parents to offspring?
• How is an organic compound defined?
• What term best classifies the observations made by the student about grey wolves, moose, trees, and a pond?
• What is the primary role of ATP in the cell?
• Which organelle is primarily responsible for cellular respiration in most eukaryotic cells?
• Which term describes a living or once-living organism in an ecosystem?
• What happens during the telophase stage of mitosis?
• Which term describes an organism that derives its energy from consuming other organisms or their remains?
• What process involves the transport of substances across a plasma membrane with the assistance of carrier proteins, but does not require energy?
• What is a significant outcome of evolution over long periods?
• What is the outcome when a cell is placed in a hypotonic solution?
• During which process does genetic variation most commonly increase due to the introduction of new genes?
• What are proteins embedded in the plasma membrane that facilitate movement of substances in and out of cells called?
• When a researcher describes sunlight, precipitation, and soil type in an ecosystem, which factors are being identified?
• Which of the following is an organic catalyst that speeds up chemical reactions in biological systems?
• Which statement best describes a difference between prokaryotic cells and eukaryotic cells?