EOC Practice Test: Finish the test SILENTLY in the allotted time: 50 participation points Every time you are talking = minus 5 points Every correct answer = 3% bonus on a quiz grade 1.) Scientists have discovered a large number of frogs with various mutations in ponds near agricultural fields. Which investigation will best test the scientists hypothesis that the cause of the mutations is from fertilizer runoff used on crops in nearby fields? A compare the number of mutated frogs with the number of unaffected frogs B record the ph and temperature of the pond water and compare with the amount of fertilizer added to the fields C determine when the first mutations occurred and how many generations have been affected thereafter D test frogs in ponds with fertilizer against frogs in ponds without fertilizer 3.) Which macromolecule group is responsible for storing and transmitting genetic information? A carbohydrate B lipid C nucleic acid D protein 2.) Which procedure will best measure the amount of growth of a plant after adding fertilizer to the soil? A compare the color of the plant before and after adding fertilizer B compare the amount of sun exposure before and after adding fertilizer C compare the mass of the plant before and after adding fertilizer D compare the weight of the soil before and after adding fertilizer 4. ) A biology class was investigating how paramecia respond to different light intensities. The class formulated the following question. How does light affect the movement of a paramecium? What is the next step the class should take to answer the question? A record observations B analyze data C design an experiment D draw a conclusion 5.) 6.) What is the most likely outcome of an increase in the rate of sediment formation and deposition in a lake ecosystem over time? A a shift in fish species requiring high levels of dissolved oxygen B an increase in the amounts of floating water plants and algae C a successional shift in the lake becoming a field or grassland D an increase in the oxygen content of the water from additional sediments The general trend graph below represents the changes in the deer population on an island over time. Which best explains the decrease in the number of deer from 1925 to 1940? A decreased number of predators B decreased number of competitors C decreased number of parasites D decreased number of producers 1
7.) Which cellular structure is present in all prokaryotic cells? 8.) Energy is used by the cell to produce the illustrated change. A endoplasmic reticulum B plasma membrane C chloroplast D lysosome Because energy is spent, the illustrated change is classified as A osmosis. B facilitated diffusion. C active transport. D passive transport. 9.) Which organelle increases the plant cell size and surface area to increase the absorption of ions? A mitochondrion B lysosome C vacuole D nucleus 10.) A team of engineers built a wind turbine using the following steps. 1. research turbines that currently exist 2. brainstorm ideas on a new design of the turbine 3. design the blades, body, and tail of the turbine 4. produce a workable prototype of the turbine When finished, the prototype did not spin correctly. The engineers determined that the turbine blades were too small for the body. Which step in the design process needs to be corrected? A Step 1 B Step 2 C Step 3 D Step 4 11.) Which substance should a student use to test for the presence of lipids? A Lugol s iodine B Sudan III C biuret reagent D Benedict s solution 13.) A student makes a chart to compare aerobic and anaerobic respiration. Which statement should be listed on both sides of the chart? A synthesizes ATP B occurs in mitochondria C requires oxygen to occur D requires sunlight to occur 12.) Researchers use differences in amino acid sequences to determine A the environment in which an organism lives. B the rate of mutation during protein synthesis. C the genetic relatedness among species. D the adaptive traits that species have acquired. 14.) Which pair of trees is most closely related? A Sabal mexicana and Prunus mexicana B Fraxinus americana and Cornus florida C Acer floridanum and Acer rubrum D Juglans nigra and Salix nigra 2
15.) A student conducted a controlled experiment to determine the optimal temperature for an enzyme to work effectively in a reaction. 16.) An energy flow diagram is shown. The student repeated the experiment several times. She concluded that the optimal temperature was 37 Cn with a large decrease in activity after 40 Cn as the enzyme broke down. Which best explains why this student s conclusion is free from bias? A The conclusion suggests another possible experiment. B The conclusion incorporates the opinions of the researcher. C The conclusion involves a graph of the data collected. D The conclusion is based on results from a controlled experiment. Which statement most accurately describes this diagram? A Heat is maintained and recycled within the system. B Waste products are only produced by the decomposers. C Decomposers directly flow the energy to producers and consumers. D Solar energy is required for the system to function. 17.) A student created this diagram to provide a general overview of a cellular process. 18.) Which process is responsible for synthesizing new strands of DNA from a supply of nucleotides in the nucleus? A replication B translation C respiration D transcription Which cellular process is represented in the diagram? A respiration B cytokinesis C chemosynthesis D photosynthesis 3
19.) A student wanted to investigate how an increase of a particular nutrient would affect the biodiversity of an area. She planted 100 plants each of three species in five equally sized tracts of land. To each tract of land, she added increasing amounts of the nutrient. Her data are shown below. 20.) Which is an accurate statement regarding cell growth and reproduction? A Cells must triple in size before they divide. B Cells divide once and then stop growing in size. C Cell division occurs continuously regardless of size. D Cell division is triggered when cells reach a certain size Which of these best describes the relationship between the amount of nutrient and the biodiversity of the habitat? A As the amount of nutrient increased, the biodiversity of the habitat increased. B As the amount of nutrient increased, the biodiversity of the habitat decreased. C As the amount of nutrient increased, the biodiversity of the habitat remained the same. D There is no relationship between the amount of nutrient and the biodiversity of the habitat. 21.) Two energy transformation processes that occur in living cells are represented. I. CO 2 + H 2 O + Light Energy Glucose (C 6 H 12 O 6 ) + O 2 22.) This setup involves a system of transport that does not use energy. Larger solutes cannot pass through the membrane. II. O 2 + Glucose (C 6 H 12 O 6 ) ATP Energy + CO 2 + H 2 O Which statements correctly describe the two processes? A I. Sunlight energy is converted into the chemical energy found in glucose. II. Energy from glucose is used to produce high energy bonds in ATP. B I. Energy from glucose is used to produce high energy bonds in ATP. II. Sunlight energy is converted into the chemical energy found in glucose. C I. Energy from ATP is used to produce a high energy molecule of glucose. II. Energy from the sun is converted into high energy bonds in ATP. Which diagram best represents the end result of the system setup? (answers on the next page) D I. Energy from the sun is converted into high energy bonds in ATP. II. Energy from ATP is used to produce a high energy molecule of glucose. 4
37.) One role of trna during the translation phase of protein synthesis is to A transfer mrna to trna. B transfer DNA to mrna. C transport nucleotides out of the nucleus. D transport amino acids to the ribosome. 23.) Light energy is transformed into chemical energy during A anaerobic respiration. B cellular respiration. C photosynthesis. D chemosynthesis. 24.) A scientist studied a pond ecosystem to understand why a frog population had disappeared from that area. The scientist discovered that certain organisms had decreased dramatically over a two month period. The decrease of which organisms most likely led to the extinction of the frog species in that ecosystem? A fish and ducks B snakes and birds C bacteria and snails D zooplankton and grasshoppers 25.) Once the cell completes the process of synthesizing the protein, to which organelle is the protein sent for modification and packaging? A the nucleus B a ribosome C a mitochondrion D the Golgi apparatus 26.) Thomas Malthus (1766 1834) wrote an essay that included the idea that if a population grows too large, the environment will no longer be able to support that population. Which statement also supports Malthus s idea? A Asexual reproduction ensures a high level of biodiversity in a population. B The amount of available energy in an environment determines its carrying capacity. C Environmental conditions determine genetic variation within individuals in a population. D Consumers dictate the amount of energy available at the 5
producer level in a population. 27.) The bar graph shown represents the energy content of the trophic levels found in a forest ecosystem. 28.) Scientists evaluated four new pesticides for agricultural use. Their initial test results are shown in the table. Based on the initial results of cost to benefit, which pesticide should be chosen for further evaluation? A Pesticide 1 because the average increase in yield is greatest B Pesticide 2 because it stays active in the soil for months C Pesticide 3 because the yield to cost ratio is greatest D Pesticide 4 because it remains in the water for months Which bar represents primary consumers? A W B X C Y D Z 29.) An early sign that a eukaryotic cell is undergoing cell reproduction is when the A cell engulfs foreign material. B plasma membrane begins to thin. C cell chemically bonds with a coenzyme. D replication of genetic material occurs in the nucleus. 30.) Southeast Asian coral reefs have the highest levels of biodiversity among the world s marine ecosystems. Dynamite fishing is the practice of using explosives to stun or kill large schools of fish. However, it is very destructive to the surrounding ecosystems, such as the coral reefs. What will most likely happen if the practice of dynamite fishing continues and intensifies over time? A decrease in many species living in the coral reefs B increase in biodiversity as the coral reefs are replaced by other habitats C decrease in water salinity as the coral reef fragments dissolve D increase in other marine species as more habitats become available 31.) Students are setting up an investigation to compare the mass of pepper plants grown with different types of fertilizers. Which tool or tools should be used to measure the mass of each pepper plant so that an accurate change in mass is calculated? A different balances to compare measurements B the same digital balance for each measurement C spring scales that measure in microunits 32.) Which cellular process will directly use the information contained in a strand of DNA? A protein synthesis B active transport C cytokinesis D respiration 6
D recently calibrated dial spring scale 33.) The diagram represents some feeding relationships in the African savanna. 34.) Students measured the mass of potato slices and placed them in solutions with different sugar concentrations. Twenty four hours later, students removed the slices and determined their final mass. Students calculated an average percent change for each set of potato slices. Their data are shown in the line graph below. What would most likely happen to the herbivore population if the primary producers in the food web were destroyed? A The herbivores would become meat eaters. B The herbivore population would decrease, resulting in a decrease in other organisms. C The herbivores would begin to make their own energy through cellular processes. D The herbivore population would quickly become extinct while the carnivores would survive. According to the graph, which concentration of sugar caused the potato slices to lose the highest percentage of mass? A 2 M B 4 M C 6 M D 8 M 7
35.) The graph represents a reaction before and after the addition of an enzyme. 36.) The structure shown represents a macromolecule. According to the graph, the addition of the enzyme A lowered the overall energy change in the reaction. B decreased the amount of product produced. C increased the potential energy of the products. D lowered the activation energy needed to speed up the reaction. The presence of which element indicates that this molecule should be classified as a protein rather than a lipid? A oxygen B hydrogen C carbon D nitrogen 8