EOC Review

1. EOC Review Mrs. Stewart Biology Standard

2. What would most likely result if nitrogen-fixing bacteria in an area were destroyed? Vegetation in the area would find other nutrient sources Vegetation in the area would not be affected Vegetation in the area would grow at a faster rate Vegetation in the area would grow at a slower rate

3. In certain species of guinea pigs, black fur is dominant to white fur. If a white male guinea pig is crossed with a black homozygous dominant female, what is the probability of having offspring with black fur? 25% 50% 75% 100%

4. Which factor is most likely to initiate the process of succession in which a deep freshwater lake becomes a woodland area? Increase in the invertebrate population Change in the pH of the lake water Growth of microorganisms Accumulation of sediment

6. What is the mode of inheritance for this disorder? A nonsex-linked dominant trait A sex-linked trait carried on the Y chromosome A nonsex-linked recessive trait A sex linked trait carried on the X chromosome

7. A growth curve for a population of crabs is shown. What is happening at Point A? A Intro. Of a new predator is causing a decline in population growth of crabs Destruction of habitat is causing a decline in the population of the crabs Population growth decreases as individual crabs get older The population is stabilizing as it approaches carrying capacity

8. Meiotic cell division results in gametes that produce sperm & egg cells by: Increasing the daughter chromosome number by 75% Increasing the daughter chromosome number by 50% Reducing the daughter chromosome number by 75% Reducing the daughter chromosome number by 50%

9. An ecosystem has a stable population of white-tailed deer. What is the most likely outcome if a new species of deer that competed for the same resources were introduced? The predator population would decrease The white tailed deer population would not be affected The white tailed deer population would increase The producer population would decrease

10. Which process most contributes to genetic variation in a population? Duplication of chromosomes in asexual reproduction Cytokinesis during cellular division Chromsome replication during mitosis Crossing over during meiosis

11. Scientists have developed a way to analyze and compare DNA sequences between humans. Using this genetic info would be most beneficial for: Determining proteins produced in skin cells Creating new gene sequences Dating the age of fossils Identifying individuals

12. According to the data table, which statement best supports the student’s conclusion? Subjects S and T are the same gender Subjects Q and S have the same resting blood pressure Subjects Q and R are different ages Subjects R and T have different resting blood pressure

13. C6H12O6 + 6O2 6CO2 + 6H20 + 36 ATPWhich process does this equation represent? Nitrogen fixation Anaerobic respiration Photosynthesis Aerobic respiration

14. One species of bird arrives on an island chain. Different species evolve from the original species to adapt to different available niches. This is an example of: Graduated equilibrium Dynamic equilibrium Convergent evolution Divergent evolution

15. Based on the name alone, which macromolecule category would “Lactase” belong? Lipids Nucleic Acids Carbohydrates Proteins

16. Based on the data table, which molecules are present in the unknown solution? Lipids and proteins Starches and lipids Proteins and starches Sugars and proteins

17. A forest area is being harvested, causing a reduction in resources. The organism most likely to become extinct as a result is: One that has a great amount of genetic variation One that feeds from a variety of sources One with a high rate of reproduction One with a specialized diet

18. Which statement identifies the cells correctly? Both cells are eukaryotic Both cells are prokaryotic Cell 1 is eukaryotic; cell 2 is prokaryotic Cell 1 is prokaryotic; cell 2 is eukaryotic Cell 1 Cell 2

19. What is the most likely reason the species shown have similar limb structures? Adapted to the same environment Occupy the same level in a food pyramid Use their limbs for the same functions Share a common ancestor

20. Which two birds are most closely related? Robin and ovenbird Western kingbird and eastern bluebird Western kingbird and ovenbird Eastern bluebird and robin

21. How will a researcher verify that his results are free from bias? Extending his research for three more years Testing a larger population of subjects using different brands Investigating similar products and their results Having an independent research company perform the same investigation

22. Antibodies are composed primarily of amino acids. In which class of biomolecules would antibodies belong? lipids Nucleic acids carbohydrates proteins

23. Which organism on the energy pyramid receives the least amount of energy from the producer? krill herring seals whales

24. An inventor builds and markets a product. Which step has he neglected to do? Identify a need Narrow the research Define the problem Verify the results

25. The physical differences among the fish are most likely: A respiration adaptation due to different oxygen levels An osmotic adapation due to salinity levels A swimming adaptation due to water temperature A feeding adaptation due to competition for food

26. Which tool is best for a student to use to observe mitosis in an onion root tip? flask Gel electrophoresis Triple beam balance microscope

27. What would most likely result if a waterborne bacteria caused the death of most of the minnow population? Decrease in both algae and zooplankton population Increase in both perch and hawk population Increase in both zooplankton and perch population Decrease in both perch and hawk population

28. Which statement best describes the interdependence of photosynthesis and cellular respiration? The products of photosynthesis are the same as the products of cellular respiration The reactants of photosynthesis are sugar and oxygen to be used in cellular respiration The products of photosynthesis are carbon dioxide and water to be used in cellular respiration The reactants of photosynthesis are the products of cellular respiration

29. During protein synthesis, a section of the DNA molecule is copied into which other molecule? Transfer RNA Nucleic DNA Cytoplasmic DNA Messenger RNA

30. Which set of chromosomes shows a mutation? 2 16 11 23

31. The enzyme catalase is involved in the breakdown of hydrogen peroxide into water and oxygen. During this reaction, catalase: Is formed into a new enzyme Is changed into a product Is used up Is unchanged

32. Enzymes… Provide CO2 for chemical reactions Absorb excess heat so that reactions occur at lower temperatures Heat up molecules so they can react Are biological catalysts

33. Zebra mussels have spread quickly through the Great Lakes region. They reproduce quickly and have few natural predators. What will most likely happen to other native mussel species in that region? Native species will mutate to become less similar to zebra mussels Native species will mutate to become more similar to zebra mussels Native species will begin to interbreed with zebra mussels Native species will decrease in areas with large zebra mussel populations

34. Animals store glucose in the form of… cellulose lipids wax glycogen

35. The graph below represents which type of reaction? Exergonic Exothermic Endothermic

36. In the reaction below, which stage is decreased by the addition of a catalyst? AH kJ EA

37. The structure below is most likely found in… Nucleic acids carbohydrates proteins Fatty acids

38. TIE BREAKER1st to answer correctly is the winner.

39. The original DNA strand for the gene, lactase, undergoes a deletion mutation in the first codon. Lactase is responsible for the breakdown of lactose (found in dairy products). Explain the effect produced on that enzyme.