2Which characteristic of prokaryotic organisms makes them different from eukaryotes? Prokaryotic cells do not have membrane-bound organelles.Prokaryotes do not have chromosomes.Prokaryotes are made of cells.Prokaryotes have DNA.What is A?
3Enzymes only work with specific substrates because each substrate- has a specific activation site for enzyme attachmentcan only use a specific ionic bond with the enzymedestroys its specific enzymeactively interferes with other substrates around itWhat is A?
5Which of these could be successfully treated with antibiotics? Common ColdInfluenzaHIVStrep throatWhat is D?
6Proteins are formed from monomers (subunits) called- amino acidsfatty acidsnucleic acidsnucleotidesWhat is A?
7In order to maintain homeostasis, it is most important for an animal to be able to- respond to its environmenthide from its predatorsincrease its prey populationchange its habitatWhat is A?
8Which skull belongs to a herbivore? D)B)What is D?
9Which bird’s foot is best adapted to flying into a region and picking up prey? What is D?
10Richard was observing black swallowtail butterflies in the field Richard was observing black swallowtail butterflies in the field. Which one of these is an observation he made about a black swallowtail butterfly?The black swallowtail is closely related to the spicebush swallowtail.The black swallowtail belongs to the class Insecta.The black swallowtail likes to fly more than anything else.The black swallowtail laid its eggs on a parsley plantWhat is D?
12The process of meiosis and fertilization help ensure the survival of the species by providing each generation with the same number of-body cellschromosomesoffspringgametesWhat is B?
13Which of the following best explains why a student researching genetics should use the most recent textbooks available?Research in Mendelian genetics began very recently.Older textbooks are more difficult to understand.New discoveries frequently add to older knowledge in genetics.No technologies from more than ten years ago are still in use.What is C?
14According to the biological definition of a species, which organisms listed below would belong to the same species?Plants that have flowers with the same structures that attract the same pollinatorsProtists that are the same shape and have the same structures for movementAnimals that can breed and produce fertile offspringMushrooms that are the same color and can grow on treesWhat is C?
15A genetic pedigree showing that only males are affected by a certain disorder is evidence of what type of inheritance?DominantSex-linkedRecessivePassiveWhat is B?
16An experiment is designed to clear an oak-hickory forest and replant the area with pines. Which of the following species would be most threatened by this experiment?Field sparrowCardinalSummer tanagerHooded warblerWhat is D?
17In the table, which item of data is most likely to be invalid? Plot 1 on July 1Plot 2 on June 15Plot 3 on May 15Plot 4 on May 30What is B?
18The diagram shows a simplified nitrogen cycle The diagram shows a simplified nitrogen cycle. Which process is responsible for returning nitrogen to the air?ExcretionDecompositionPhotosynthesisNitrificationWhat is B?
19Which variable appears to control leaf production in these plants? The temperatureThe number of daylight hoursThe amount of waterThe relative humidityWhat is A?
20Which is the body’s first line of defense against disease? EnzymesBloodAntibodiesSkinWhat is D?
21All of these are common shapes of bacteria EXCEPT- rodspiralsquaresphericalWhat is C or square?
22Which of the following came first in the scientific study of living things? Light microscopeCell theoryElectron microscopeModel of DNAWhat is A?
23An organism that causes infections in plants and animals, but cannot be seen with a light microscope similar to that used in a high school biology course, is most likely a-virusbacteriumfungusprotozoanWhat is A?
28Early classification systems consisted of two kingdoms; Plantae and Animalia. What scientific development allowed taxonomists to establish the Monera and Protista kingdoms?Discovery of DNACreation of electrophoresisInvention of electron microscopeDevelopment of Koch’s postulatesWhat is C?
29Some sphinx moth caterpillars are called tomato hornworms Some sphinx moth caterpillars are called tomato hornworms. These large caterpillars do a tremendous amount of damage to tomato plants. Which method of moth control would be most dangerous to the honeybee, which is needed for plant pollination?Using moth scents to attract the moths to trapsReleasing caterpillar parasitesSpraying plants with insecticidesPlanting moth-repelling plantsWhat is C?
30In plants, gymnosperms have cones and angiosperms have flowers In plants, gymnosperms have cones and angiosperms have flowers. Both of these plant structures are specialized for-sexual reproductionfood productionwater absorptionphotosynthesisWhat is A?
31Orchids were studied to determine if the amount of humidity affected the flowering of these plants. Which of these was the independent variable in this study?The percentage of humidityThe amount wateredThe length of time required for floweringThe number of flowers on each plantWhat is A?
32Which characteristic supports the hypothesis that this animal spends a great deal of time burrowing through the soil?The shape of its bodyThe position of its noseThe length of its tailThe size of its clawsWhat is D?
33The skulls below belong to different animals The skulls below belong to different animals. Which skull belongs to the animal that is probably unrelated to the other three?CADBWhat is D?
35The picture shows a segment of DNA from a cat The picture shows a segment of DNA from a cat. Which of these is the most likely the kitten of the cat?1234What is D or 4?
36Inversions in chromosomes occur when part of a chromosome breaks out and is reinserted upside down. Which of the diagrams below represents an inversion?What is C?
37The process of DNA replication is necessary before a cell- makes a proteincodes for RNA moleculesdivides into two cellsmodifies lysosome enzymesWhat is C?
38What conclusion can be drawn from the genetic information below? The white parent carried a dominant allele.All the rabbits carried the recessive allele.All the white rabbits are heterozygous.All the black rabbits in the F2 generation are homozygous.What is B?
39Based on the method by which they get food, organisms are classified as autotrophs or heterotrophs. Which organism listed below is correctly paired with its metabolism?Mushroom-autotrophHuman-heterotrophGrass-heterotrophFish-autotrophWhat is B?
40According to the diagram, during the last 40 million years, the structure of the horse’s foot has- lost its toesbecome smallergrown toesremained the same sizeWhat is A?
41Cowbirds often lay eggs in the nests of other songbirds Cowbirds often lay eggs in the nests of other songbirds. The young cowbirds grow up hearing the songs of their foster parents but sing cowbird songs when they are adults. This is an example of-imprintinginstinctmimicrycamouflageWhat is B?
42Increased surface area increases the number of molecules that can be collected from the air. According to this information, which beetle antenna is best adapted for chemically sensing the air?B)D)A)C)What is A?
43Which of the following methods would provide the most accurate information for students collecting data about local attitudes concerning the use of alternative fuels for automobiles?Take an opinion poll of drivers.Listen to speeches given by politicians.Study newspaper articles.Track prices at nearby gas stations.What is A?
44A student is trying to determine the effect of pollutants on the growth of three groups of seeds. The results will not be valid because the experiment has no-conclusionhypothesiscontrolvariableWhat is C?
45The unique properties of water enable life to exist on Earth The unique properties of water enable life to exist on Earth. Which of these is a property of pure water?Its solid form is more dense than its liquid.It has a low heat absorption capacity.It is slightly more acidic than air.It dissolves many substances.What is D?
46According to this data, what percentage of vitamin supplement should be added to the turkey’s diet for maximum weight gain?6%20%10%14%What is C?