JLAB Biology SOL Practice Test

These questions are part of the practice quiz. Start practicing

• In unicellular organisms like Paramecium, where is food contained after ingestion?
• What is the primary purpose of the flagellum in a cell?
• Which of the following factors can affect population dynamics in an ecosystem?
• What question could best be answered by observing food left out for 2 days?
• Darwin's explanation for evolution was dependent on which scientific concept?
• According to genetic coding, what does the codon AGC stand for?
• What is the main function of organelles within a cell?
• What type of organisms do the terms gymnosperms and angiosperms belong to?
• In a food chain, which organism provides nutrients for the largest number of other organisms?
• To which species does a wildflower with blue or purple flowers and five fused petals belong according to the identification key?
• What is the significance of the size of a bird's foot when picking up prey?
• What effect does the release of adrenaline have during stress or fear?
• In a Virginia forest, which of the following organisms acts as a decomposer?
• What part of the leaf primarily protects it from air drying?
• Which hypothesis is best supported by the observation of an animal that spends much of its time digging?
• In the context of ecological interactions, what does “energy and nutrient transfer” refer to?
• Which statement is best supported by the data regarding wheat plants and ultraviolet light?
• What does incomplete dominance indicate in snapdragons?
• In an experiment with Elodea, which change would most likely increase the volume of oxygen gas accumulating at the top of the tube?
• What is the energy-transferring molecule used by cells?
• What is the main advantage of perspiration in mammals?
• What characteristic would tissue samples from the heart and stomach of a grasshopper have in common?
• Which process is directly affected by the availability of water in plants?
• What is parental investment in regard to offspring survival?
• What caused the decrease in dissolved O2 concentration during the night in the pond?
• How does the environment affect the adaptation of species over time?
• Which part of a plant is primarily responsible for water and nutrient absorption?
• Which is an important function of the cell structure in this model?
• Which animal develops in a life cycle similar to that of a moth?
• What flaw was identified in the biology class experiment with planaria in salt water?
• How does genetic drift typically occur?
• Which reproductive strategy is characterized by producing many offspring with little to no parental care?
• Which organelle in the cell functions similarly to the circulatory system by transporting substances?
• Which of the following best describes the role of decomposers?
• A student wants to view cells under the compound microscope at a total magnification of 400X. If the eyepiece is 10X, which objective lens should be used?
• Which feature distinguishes prokaryotic cells from eukaryotic cells?
• Which experimental design could be used to support Redi's hypothesis that maggots come from flies?
• What happens to a plant cell when there is a lower concentration of water outside compared to inside the plant cell?
• In an experiment studying the effect of pH on algae growth, what should the student ensure?
• What is the greatest limiting factor for plants that grow on the floor of a rain forest?
• How did Timothy inherit attached earlobes despite both parents having free earlobes?
• In ecological studies, what does it mean if a species is more numerous in one environmental condition versus another?
• What is an essential characteristic of the lifecycle of a moth?
• Which type of flower is identified using the dichotomous key for white wildflowers in Virginia?
• How do autotrophs obtain energy?
• What term describes a group of different organisms living together in a particular area, such as a backyard?
• Based on amino acid differences in hemoglobin, which organism is most closely related to humans?
• In cows, long hair is dominant to short hair. If a cow is heterozygous for long hair, what percentage of cells undergoing meiosis will carry the dominant allele?
• Which of the following conditions primarily affects the habitats of fungi?
• Studying the differences between fossils and modern organisms helps scientists better understand the -
• Which independent variable should a student manipulate to test the hypothesis that green algae grow fastest when exposed to blue light?
• What is a common trait of toxic butterflies like the Monarch?
• What is the primary reason that the chances of developing certain diseases are higher if a family member has the disorder?
• Which component of a cell is primarily responsible for energy production?
• Erwin Chargaff's discovery regarding DNA involved ratios of which nitrogenous bases?
• What is the primary role of enzymes in cellular processes?
• What type of leaf shape is identified in the cucumber plant?
• What scientific advancement allowed for the classification of the Monera and Protista kingdoms?
• Which chromosome sequence could indicate a deletion event?
• What is essential for a valid scientific experiment?
• What procedure should have been changed to avoid errors when comparing plant transpiration rates at different humidity levels?
• Which of these functions most like the "brain" of a cell?
• Why might an organism evolve to have a high number of offspring with little care?
• What was a significant outcome of Pasteur's experiment?
• What adaptation do the nonpoisonous eastern scarlet snake exhibit to avoid predation?
• Which part of the plant is primarily responsible for water absorption?
• Which environmental factor is commonly associated with the decline in certain organism populations?
• What would logically follow if a key indicates a plant has blue flowers with fused petals?
• Which characteristic do most adult fungi and plants share?
• What do plants primarily need for photosynthesis?
• Where does fertilization occur in a flower?
• If a female and male offspring from a specific cross in fruit flies are allowed to mate, what is the expected ratio of their offspring?
• Which type of organism is more likely to lose a population due to the death of a few individuals?
• What hypothesis is best supported by a graph illustrating an increase in the food supply of cardinals?
• If a student observes a cell in cytokinesis under a light microscope, from which type of organism is this cell most likely derived?
• What do bacteria in deep-sea habitats utilize hydrogen sulfide for?
• What primary factor supports the spread of different species within an isolated environment?
• How do fungi obtain nutrients?
• Which cellular structure is associated with movement in motile unicellular organisms?
• According to the biological definition of species, which organisms belong to the same species?
• Which cellular structure is responsible for energy production?
• What is DNA that is derived from the DNA of two or more different species called?
• The maintenance of glucose concentration within a narrow range in vertebrates is an example of what biological concept?
• What would improve the validity of an experiment measuring the growth of bean plants using different fertilizers?
• What characteristic makes ice less dense than liquid water?
• What is a common misconception about the origin of maggots?
• Which tool would be the most precise for measuring the height of plants in millimeters?
• What could cause unrelated species to resemble each other over generations?
• Which feature do viruses share with animal cells?
• Which category best describes the organism discussed that is classified as a eukaryote?
• What is the main reason that eating salty foods makes a person thirsty?
• Which of the following best describes the concept of r-selection?
• What is the primary factor that affects the adaptation of a bird's foot for hunting?
• What is the most effective method for gathering information on local attitudes toward alternative fuels for automobiles?
• During which form of cell division does crossing over typically occur?
• Which of the following is true regarding the relationship between environmental factors and population sizes?
• What process is responsible for the accumulation of oxygen in Earth's atmosphere according to scientists?
• To maintain homeostasis, what is most crucial for an animal?
• Which of the following is a mammal that is native to Virginia?
• What is essential information needed to place the fossilized remains of a canine in the ancestral time line?
• Which method is least likely to be accomplished through fossil record studies?
• Cells from which of the following organisms would be expected to contain cell walls?
• Which of the following is NOT a function of ATP in cells?
• Why do the least specialized animals generally stand the best chance of survival in drastic environmental changes?
• The structural similarity in organisms belonging to the Phylum Chordata suggests what?
• What is the main role of mitochondria in a cell?
• What observation did Richard make about black swallowtail butterflies?
• What process in the nitrogen cycle is responsible for returning nitrogen to the atmosphere?
• What evolutionary advantage would longer legs provide for ponies in the Chincoteague National Wildlife Reserve?
• What role do mushrooms play in an ecosystem?
• Which relationship type describes a situation where both organisms benefit?
• If two heterozygous tall pea plants are crossed, what percent of the offspring will probably be short?
• What do gymnosperms and angiosperms have in common?
• A species that reproduces multiple times in its lifetime is known as what type of species?
• During which time period did the overall bluegill population experience a decline?
• What term refers to the balance maintained by an organism's internal environment?
• The x-ray diffraction of DNA contributed to the understanding that DNA has what characteristic structure?
• Which statement supports the cell theory?
• What classification level do the four different pine trees belong to?
• What was Rosalind Franklin's contribution to the understanding of DNA molecules?
• This graph shows that -
• What process is most likely responsible for the formation of five distinct frog species living in separate habitats along the Mississippi River?
• What feature of genetic information helps in identifying individuals?
• If transpiration stopped completely, what would be the first effect on a plant's homeostasis?
• What best defines the term 'haploid' in relation to gametes?
• Why is a coverslip correctly lowered onto a slide during microscopy?
• In a plant with red flower color, which alleles will be carried by the gametes if the plant is heterozygous?
• What method should scientists use to track tundra swans migrating from Virginia?
• What factor likely contributed to the evolution of different species of Hawaiian honeycreepers?
• What type of selection favors traits that enhance reproductive success in changing environments?
• Which of these events is NOT a natural occurrence that can change an ecosystem?
• The weakness of hydrogen bonds between the bases of DNA allows what to occur during transcription and replication?
• Which of the following conditions could effectively be treated with antibiotics?
• How do scientists classify organisms into the same species?
• Which type of organism primarily produces energy through photosynthesis?
• What term is used to describe a symbiotic relationship in which one organism benefits and the other is harmed?
• According to the theory of dinosaur extinction, what adaptation of mammals likely helped them survive?
• In what way are viruses considered unique among biological entities?
• In terms of cell organelles, which part is responsible for processing and packaging proteins?
• Tall land plants have requirements different from those of aquatic plants. Which of these must tall land plants have that aquatic plants do not need?
• What is the significance of DNA replication in the life of a cell?
• What group of organisms is generally classified based on similar hemoglobin sequences?
• Which observation about beetle populations supported Charles Darwin's theory of evolution?
• What is the first step a scientist should take after observing changes in insect population during different weather conditions?
• Between May 12 and May 16, what was the difference in the mean number of sparrows and jays observed at Willow Point?
• What is the main function of a cell wall in plant cells?
• Which of the following statements best describes the pace of evolution?
• Why is photosynthesis crucial for nearly all life on Earth?
• The processes of meiosis and fertilization help ensure the survival of species by maintaining the same number of what?
• What primary role do leaves play in plants regarding sunlight?
• For the growth curve to keep increasing, what must occur?
• Which macromolecule is prominent in animal tissues and functions in insulation?
• Which organism is capable of quick movement in response to its environment?
• In studying cell responses to salt solutions, which concentration would cause no change in the size of cells?
• At which level of the energy pyramid is the most energy found?
• In what way does albinism affect the appearance of individuals?
• Which pollutant category did trees show a significant ability to remove?
• What aspect of early life forms did Alexander Oparin hypothesize about?
• Why can only water molecules enter the cell during osmosis?
• What conclusion can be drawn from the discovery of giant fossil ferns in Canada?
• What scientific advancement is attributed to Louis Pasteur’s experiments?
• In 1847, what observation did a scientist make regarding handwashing by physicians?
• What is the significance of the reduction of chromosome numbers during meiosis?
• Which of the following experiments helped support hypotheses about the origin of life?
• Which adaptation is most effective in helping rain forest plants maximize sunlight absorption?
• What conclusion can be drawn if a species of plant grew best between 18°C and 26°C?
• Which of the following statements best summarizes Lamarck's views on evolution?
• Which of the following is a characteristic of K-selected species?
• How do plants and fungi differ in terms of nutrition?
• A mushroom and a humpback whale are alike because both are?
• What evidence supports the conclusion that hadrosaurus was a plant eater?
• What allows DNA to fit inside the nucleus of a cell?
• Recognizing that bacteria can cause diseases changed the following aspect of medicine:
• Which macromolecule is essential for storage of genetic information in living organisms?
• What does Francesco Redi's experiment in 1668 demonstrate about the origin of fly larvae?
• What is the significance of genetic diversity in a population?
• Why is photosynthesis critical for life on Earth?
• Which factor is likely to have contributed to the rise in the Rocky Mountain mule deer population in the early 20th century?
• What is the best classification of clams, which are known to filter food particles from the water?
• Based on the observations made, which kingdom does the unknown organism most likely belong to?
• Based on DNA fingerprints, which horse is most likely the father?
• Animals that live in soft sandy areas have large wide feet compared to their body size. What is the advantage of these large feet?
• What environmental condition would likely decrease plant growth?
• In ecological terms, what do we call the balance of various organisms in a given environment?
• What is the primary function of lipids in living organisms?
• Which components of DNA provide the coding for proteins?
• When do fungi primarily obtain nutrients through decomposition?
• What might be a key factor affecting plant growth in an experiment?
• What physiological process contributes to maintaining fluid balance within cells?
• Which of the following substances has a pH of about 3?
• What is the main benefit of homeostasis in living organisms?
• What ratio of offspring will be homozygous recessive for the trait of tallness in a specific genetic cross, given the results?
• What physiological adjustment does the jackrabbit’s circulatory system make during hot days?
• To what advantage does endothermic metabolism provide mammals during extreme environments?
• What is a common adaptation for mammals living in an aquatic environment?
• In deep-sea ecosystems, what role do bacteria that convert hydrogen sulfide to sugars play?
• Which of the following is not considered a virus?
• How would scientists determine if genetically modified wheat is resistant to moths?
• Which group of organisms exhibits the highest metabolic rate?
• Which feature do viruses share with animal cells?
• What is a potential consequence of introducing a new pest into an ecosystem?
• What is the expected phenotypic ratio from a cross between two heterozygous pink snapdragons?
• What is the function of the long, trailing vines of the cucumber plant?
• What is the end result of spermatogenesis?
• What implication does the presence of fossil evidence suggest about a region's historical climate?
• Students research unicellular, prokaryotic organisms that live in harsh environments. Which group are they most likely researching?
• Why are animals from foreign countries quarantined before entering the United States?
• What was the main contribution of Miller and Urey's experiment in relation to the origin of life?
• Which of the following processes is primarily responsible for the conversion of light energy into chemical energy in plants?
• What conditions should be optimal for plant growth when testing rainwater versus bottled water?
• What characteristic is true of filter feeders like clams?
• Which characteristic is indicative of the kingdom Fungi?
• Why must gametes be haploid?
• What distinguishes prokaryotic organisms from eukaryotic organisms?
• If a student is researching heredity for a science project, which resource is likely the most reliable?
• Which plant is most closely related to the cucumber based on its family characteristics?
• What does albinism in individuals primarily represent in genetic terms?
• What conclusion can be drawn from testing four disinfectants on bacterial growth?
• Among the causes of wetland loss, which one do people have the least control over?
• What observation led a geneticist to hypothesize that short wings in fruit flies are a recessive trait?
• Which process is primarily responsible for creating genetic diversity in a population?
• What was the approximate density of Rocky Mountain mule deer in the Grand Canyon National Forest Reserve by 1923?
• What is the primary reason why the experiment with seeds is invalid?
• What component of a cell is mainly responsible for protein synthesis?
• Which of these processes is carried out in the same way in both plants and animals?
• Which kingdom would a newly discovered organism, multicellular and with eukaryotic cells but lacking photosynthesis, belong to?
• A genetic pedigree showing that only males are affected by a certain disorder is evidence of what type of inheritance?
• What is one main characteristic of fungi?
• Why can't fungi produce their own food like plants?
• What discovery led to the understanding that all life forms consist of cells?
• Why are Monarch butterflies toxic to birds?
• What type of organism can be classified as a producer in an ecosystem?
• What characteristic is common among one-celled eukaryotic organisms found in freshwater ponds?
• Most cellular activities are primarily regulated by which type of biological molecules?
• Which of the following is not a method for preventing bacterial illnesses in a meat-processing plant?
• What characteristic of bacteria allows the rapid development of antibiotic-resistant strains?
• Which cellular structure is involved in protein synthesis?
• Which explanation best accounts for the differences in resistance to Dutch Elm Disease among elm trees?
• When determining the classification of an animal, what method can be used?
• According to historical data, what was the carrying capacity for sheep in Tasmania between 1840 and 1920?
• What cellular process involves the movement of water across a semi-permeable membrane?
• What is the primary role of the cell membrane?
• Which of the following best describes the role of earlobes in inheritance?
• How do bacteria typically reproduce?
• What has likely contributed to the increased resistance of Mycobacterium tuberculosis to streptomycin?
• What term did Robert Hooke use to describe the structures he observed in cork?
• During which month did trees remove the greatest amount of pollutants?
• What could be a potential hypothesis for insects being more numerous in dry summers?
• Which two frog species are most likely to interbreed?
• The discovery that chromosomes are involved in inheritance was made possible by the invention of the -
• What can the study of embryos reveal about living organisms?
• Which organism serves as a decomposer in a Virginia forest ecosystem?
• In what way do all living organisms exchange gases?
• What type of data would best help evaluate the effect of the hemlock woolly adelgid on trees?
• What happens to enzyme activity when the temperature increases beyond the optimal range?
• How do fungi, such as mushrooms and molds, obtain their nutrition?
• Which set of materials would be best to prepare a wet mount slide of onion skin cells?
• What property of water allows ice to float on it?
• What does the interaction indicate about energy and nutrient transfer?
• Why are algae and multicellular plants classified as autotrophs?
• What factor would exclude overharvesting as the cause of the decline in edible fungi species?
• Which type of organism typically produces few offspring while providing parental care?