OSAT Biological Sciences (110) Practice Exam

These questions are part of the practice quiz. Start practicing

• What is a frameshift mutation?
• What is the main function of enzymes in biochemical reactions?
• Which type of mutation results in a different amino acid being incorporated into a protein?
• What is the term for a mutation involving a piece of a chromosome that breaks off and reattaches in reverse orientation?
• What is an example of pollution mitigation that reduces environmental impact before it occurs?
• What is the process of grouping organisms into categories known as?
• How do food webs compare to food chains in terms of biodiversity and complexity?
• Which process maintains homeostasis of fluid levels in the body?
• During which mitotic phase do sister chromatids separate?
• What is the outcome of hybrid infertility?
• Which term refers to the preparation of desired organic compounds from readily available starting materials?
• In scientific terms, what does the dependent variable depend on?
• What is the process called by which organisms maintain a stable internal environment?
• Which process describes the shedding of the uterine lining?
• Which of the following statements is true regarding speciation?
• Which isolation mechanism leads to the failure of fertilization due to differences in mating behaviors?
• Which two scientists described the structure of DNA in 1953?
• What term describes hybrids that are sterile or have low fertility?
• Which of the following is NOT a function performed by the liver?
• Cells that have limited potential to develop into many types of differentiated cells are classified as?
• Which phase of the ovarian cycle is characterized by the secretion of estrogen?
• What type of cells are responsible for surrounding stomata, thus regulating their opening and closing?
• What fundamental laws of inheritance did Mendel develop through his experiments?
• What is the outcome factor that may change in response to manipulations of the independent variable called?
• How can new evidence impact existing scientific knowledge?
• What effect does low nutrient availability have on cell division?
• What does osmoregulation primarily involve?
• What is the result of a cell being placed in a hypotonic solution?
• What pattern of evolution is characterized by long stable periods interrupted by brief periods of more rapid change?
• What is the purpose of gel electrophoresis in biological research?
• Which term defines an environmental impact as a consequence of human activity that leads to detrimental ecological changes?
• Which category does not fall under the three domains of life?
• What is peristalsis?
• In the food chain, what is typically the role of primary producers?
• Suberin is primarily found in which type of tissue within plant structures?
• What year did Alfred Wallace publish his paper on natural selection?
• What did Alfred Wallace contribute to the theory of evolution?
• What defines totipotent stem cells in terms of differentiation potential?
• What type of speciation is characterized by peripheral populations becoming geographically isolated and undergoing genetic divergence?
• What is defined as a mutation that does not change the amino acid created?
• What is the primary focus of scientific inquiry?
• Which type of mutation is characterized by a simple substitution of one base for another?
• What describes the importance of maintaining a stable internal environment?
• What type of stem cells can develop into most, but not all, of the body's cell types?
• Which of the following is a contributing factor to desertification?
• In the context of reproductive isolation, which of the following typically occurs first?
• Which type of speciation occurs when new species form in populations that inhabit the same geographic area?
• What is the term for the process where genetic material is moved from one location to another?
• What is the primary purpose of the epidermis in plant structures?
• Which of the following is true regarding the classification of organisms?
• In a food chain, which level typically has the highest energy availability?
• Which term refers to an aspect of an experiment that changes during the course of the experiment?
• Which term describes stem cells with the potential to differentiate into any type of cell?
• What is the term for a mutation that occurs in gametes?
• What function do helper T-cells serve in the immune system?
• In what type of solution do cells tend to swell and potentially burst?
• Which evolutionary pattern describes multiple species evolving from a single ancestral species?
• What concept is supported by the idea that amino acids can appear from meteor strikes?
• Which process involves a change in genetic variability of a population due to physical events?
• What is the initial cell called that results from the fertilization of an egg by a sperm?
• What critical patterns of inheritance did Gregor Mendel observe in his experiments?
• Which sections of the brain make up the brain stem?
• What was a significant outcome of Gregor Mendel's research on pea plants?
• What does an adaptation in an organism primarily enhance?
• What process allows for the division of one cell into two cells of equal size in single-celled organisms?
• What is a key characteristic of the arid climate that contributes to desertification?
• What is the term for a substance produced by the body that can destroy or inactivate antigens?
• What type of gene mutation involves a change in a single base pair in DNA?
• Which form of reproductive isolation involves differences in courtship rituals?
• Which environmental phenomenon involves the introduction of species by humans?
• What is the primary function of ribosomes in cells?
• Which hypothesis suggests that life could arise from nonliving matter?
• What process describes the gradual evolution of species through the selection of adaptive traits by nature?
• Which concept describes the evidence for evolution that includes fossil records and comparative anatomy?
• What is the key feature of a hypotonic solution?
• Which trophic level directly consumes producers?
• What type of speciation results from geographical isolation between populations?
• What is the feedback loop that causes a system to change further in the same direction?
• What is the term for an inherited characteristic that enhances an organism's chances of survival?
• What describes precipitation containing a high concentration of harmful acids?
• During which phase of meiosis do tetrads form?
• What phenomenon describes a change in allele frequency due to random chance?
• During which phase does ovulation occur in the menstrual cycle?
• In a food chain, what is the series of steps that involves organisms transferring energy through consumption?
• What is the highest taxonomic rank in the hierarchy?
• Which type of mutation occurs in cells of the body other than gametes?
• What term describes the process in which a population becomes divided into two or more groups that evolve independently?
• What regulatory mechanism can influence the activity of an enzyme through a change in conformation?
• What does postzygotic isolation refer to?
• Which trophic level is supported by the least amount of energy in an ecosystem?
• What is the main function of nodes in plants?
• Which of the following factors is a characteristic of a disturbance that impacts the rate of recovery?
• Which type of reproductive isolation could lead to speciation as a result of different mating seasons?
• During which phase of mitosis does the mitotic spindle form?
• What is the relationship between buds and plant growth?
• What component is located at the 5' end of a nucleotide?
• What are the three domains of life?
• In which type of mutation is the total amount of DNA in a chromosome reduced?
• What best describes Monera?
• Which statement best describes a scientific law?
• What type of DNA sequence can exert its effects on the expression of a gene from a distance?
• Metabolism in living organisms refers to what process?
• What concept in biology describes a gradual change in a species over time?
• Who was the French chemist that discovered that heat can kill bacteria that spoil liquids?
• What is the mode of evolution when two or more species with a common ancestor become increasingly different?
• Which of the following is a nitrogenous base found in DNA?
• Which speciation pattern involves populations that develop new species while remaining in contact along a common border?
• An organism that directly eats producers is known as what type of consumer?
• Which type of potency refers to stem cells that can only develop into one specific cell type?
• What is the term for a group of various species that interact with each other in a specific environment?
• What type of isolation occurs when two populations occupy different habitats and do not meet?
• What is the main function of phellem, commonly known as cork?
• In the biological classification system, what does the domain represent?
• What is the name given to the solid ball of 16 cells that forms during early embryonic development?
• What term describes the process in which elements and compounds are exchanged within an ecosystem?
• What groundbreaking experiment did Stanley Miller conduct in 1953?
• What is the final phase of mitosis where chromosomes begin to uncoil, spindles break down, and a new nuclear membrane forms?
• What form of reproductive isolation occurs when two populations reproduce at different times?
• What describes the functional relationship between an enzyme and a substrate during feedback inhibition?
• What is the end result of meiosis and cytokinesis?
• Which of the following is an example of biomolecules?
• Which term is associated with analyzing the genetic similarities and differences among species at the molecular level?
• Which base is NOT found in RNA?
• What type of mutation changes an amino acid codon to one of the three stop codons?
• Which technique uses the absorption of light to determine the concentration of a substance?
• What process is primarily characterized by the alignment of chromosomes at the cell's equator?
• What is the consequence of a point mutation?
• What process is used to remove dissolved gases from water by bubbling air through it?
• Which type of isolation occurs when species breed at different times of the day or year?
• Which type of RNA carries genetic information from the DNA to the ribosome?
• What is the best definition of an estrous cycle?
• Which of the following best describes habitat isolation?
• What initiates a cellular self-destruct process at the G2 checkpoint?
• What is the first step in gene expression?
• What cellular structure is involved in the synthesis of lipids and proteins?
• What term is used to describe herbivores in ecological terms?
• What is the main characteristic of the digestive tract in animals with a complete digestive system?
• In which phase of mitosis do chromosomes line up in the middle of the cell?
• Which scientist is often referred to as the "father of genetics" for his work with pea plants?
• What is the term for an ecological event that disrupts an ecosystem significantly?
• In which part of a eukaryotic cell is DNA transcribed?
• What is the relationship between DNA fragments and gel electrophoresis?
• What theory suggests that life originated from organic compounds from outer space?
• What is a feedback mechanism?
• Which of the following is true regarding the impact of road building and development on habitats?
• Which of the following best describes a secondary consumer?
• Which mutation is most likely to lead to severe changes in protein function?
• Where does translation occur in a eukaryotic cell?
• What term describes the idea that simple life forms appeared spontaneously through chemical reactions long ago?
• Who is primarily known for independently developing a theory of natural selection similar to Darwin's?
• During which stage of zygote formation do cells migrate to create a cavity?
• What is the term for a variable that is kept constant during a controlled experiment?
• Which type of mutation does not result in a change to the amino acid sequence?
• What distinguishes the domain classification system from the kingdom classification system?
• Which of the following is NOT a function of the liver?
• Which type of adult stem cells gives rise to only one specialized cell type?
• What is binary fission?
• Which type of tissue is made up of phellem cells along with other specialized cells?
• Which describes the relationship between feedback mechanisms and homeostasis?
• Which selection method is primarily influenced by human choice in the development of domesticated species?
• Which process describes the conversion of light energy into chemical energy in plants?
• What could cause punctuated equilibrium in an ecosystem?
• What is known as positive cooperativity in enzyme interactions?
• What term describes the process by which unrelated organisms independently evolve similarities when adapting to similar environments?
• What effect does a somatic mutation typically have?
• What does thermoregulation primarily refer to?
• In plants, what are the two primary organ systems?
• In which phase of the cell cycle does apoptosis typically get evaluated?
• What can adaptive radiation lead to in evolutionary terms?
• What is the main impact of a germline mutation?
• What is the primary function of the follicular phase in the human menstrual cycle?
• What type of stem cells can differentiate into only a few specialized cell types?
• A sperm cell is most likely the result of which process?
• In ecological interactions, what term describes the role of an organism in relation to its environment?
• Which process involves examining the embryonic development of various organisms to provide evidence for evolution?
• What role do phagocytes play in the immune system?
• What type of structure in plants gives rise to new plant structures?
• What hormones control the follicular phase in the ovarian cycle?
• What kind of mutation would likely result in a shorter, nonfunctional protein?
• What is one impact of overfishing on aquatic ecosystems?
• In the context of evolutionary biology, what does negative feedback typically maintain?
• Which term refers to a community of organisms connected by interrelated food chains?
• In the context of cellular differentiation, which term is used to describe cells that exhibit the ability to differentiate into many but limited cell types?
• Why can reproductive isolation lead to speciation?
• What is the most common form of speciation that occurs due to a physical geographic barrier between two populations?
• Which of the following is NOT a function of the respiratory system in humans?
• A mutation that results in the addition of one or more nucleotides to a gene is called what?
• What concept did Louis Pasteur confirm regarding the origin of cells?
• Which is the first and largest category used to classify organisms?
• What type of substance found in cell walls contributes to the protective qualities of cork tissue?
• In Miller's experiment, what was produced after simulating conditions of early Earth?
• What characterizes a hypertonic solution?
• What is an example of human-caused environmental impact characterized by precipitation with a high concentration of acids?
• What term describes the process in which a stimulus produces a response that opposes the original stimulus?
• Which type of cell is responsible for producing antibodies in the immune response?
• What kingdom of organisms is characterized by the absence of a membrane-bound nucleus?
• Which type of mutation results from the deletion of one or more nucleotides from a specific sequence?
• What is a scientific fact?
• What is the primary driver of natural selection?
• Which of the following is not a type of mutation?
• Which phase of the human menstrual cycle lasts roughly from days 1 to 14?
• How did Louis Pasteur experimentally disprove the concept of spontaneous generation?
• Which type of speciation takes place when two populations are separated by a physical barrier, leading to genetic divergence over time?
• What is the structural unit that makes up nucleic acids?
• In parapatric speciation, populations that are in contact tend to diverge due to:
• What term describes a small habitat located a short geographic distance from a larger habitat?
• Which of the following levels is found immediately below the kingdom level in the taxonomic hierarchy?
• What term describes a descriptive statement or equation that reliably predicts events under certain conditions?
• In enzyme kinetics, what does negative cooperativity refer to?
• What is the role of tRNA in translation?
• What is the typical diet of a primary consumer?
• What term is used to denote the embryonic stage that follows the morula, characterized by a formation of a hollow cavity?
• What is the main goal of green buildings?
• What is an example of a direct interaction in an ecological community?
• What term refers to a carnivore that feeds on other carnivores?
• What type of cell is a stem cell classified as?
• Which term refers to the classification system used to organize living organisms?
• Which reproductive isolation mechanism involves mating attempts that are unsuccessful due to morphological differences?
• What condition would likely stop a cell from committing to division?
• Which process helps a body adapt to changes in its external environment?
• Which of the following is an example of cellular respiration?
• What describes an isotonic solution?
• What is gene flow?
• Which type of biomolecule is primarily responsible for storing genetic information?
• Which cycle is essential for the movement of carbon through the ecosystem?
• Which component is commonly measured in spectrophotometry?
• How does thermoregulation contribute to homeostasis?
• What are the chemicals added to cooling water to control algae and fouling called?
• What function is NOT associated with the epidermis in plants?
• Which of the following is an example of fungi?
• Which term refers to a statement that can be proved?
• During which phase does DNA replication occur?
• What occurs during anaphase of mitosis?
• The experiment conducted by Stanley Miller aimed to simulate conditions of which environment?
• What is a Nerve Net in the context of biology?
• What method involves burning solid waste to generate steam for heating or electricity?