Biology End Of Course Practice Test #2

35 Questions | Total Attempts: 158

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Biology End Of Course Practice Test #2

35 questions; 45 minutes This test will randomly select 35 questions from a test bank of EOC-type questions.


Questions and Answers
  • 1. 
    Chan wants to determine how much the mass of fungus growing on a nutrient agar plate changes over an 8 hr period. What is the most appropriate unit of measure for him to use?
    • A. 

      Kilogram

    • B. 

      Kilometer

    • C. 

      Milligram

    • D. 

      Millimeter

  • 2. 
    What is the best definition of a scientific theory?
    • A. 

      An explanation of how and why a natural phenomenon behaves teh way it does

    • B. 

      A description of an invariable relationship that exists in nature

    • C. 

      A speculation or guess about how nature works

    • D. 

      An unproven fact

  • 3. 
    A scientist studies the effects that barnyard grass, a weed, has on the growth of rice, other weeds, and insects. The barnyard grass and other weeds, rice, and insects make up whihc level of biological organization?
    • A. 

      Population

    • B. 

      Community

    • C. 

      Ecosystem

    • D. 

      Biome

  • 4. 
    Lydia works in a flower shop after school. She notices that the hydrangeas in Container 1 have pink blossoms, while the hydrangeas in Container 2 have blue blossoms. She makes sure they all recieve the same amount of light and water. Her boss tells her that the flowers were all grown from the same seed variety. Lydia discovers, after testing the soil, that although the same type of soil was used, the soil in Container 1 has a pH of 6.0, and the soil in Container 2 has a pH of 5.0. Lydia most likely conducted her investigation to answer what question about hydrangeas?
    • A. 

      How does the chemistry of the soil affect the color of hydrangea blossoms?

    • B. 

      What role do genetic factors play in hydrangea color?

    • C. 

      Do varying degrees of light affect hydrangea color?

    • D. 

      What type of soil will produce a hydrangea with both pink and blue blossoms?

  • 5. 
    Which experimental design would provide scientists with the best data for investigating which type of feed yields the greatest gain in lean muscle mass in cattle?
    • A. 

      Test 5 different types of cows with the same feed mixture and measure their weight gain at the end of a 6-week trial.

    • B. 

      Test 5 similar groups of cows with 5 different feed mixtures and measure their weight gain at the end of a 6-week trial.

    • C. 

      Test 5 similar groups of cows with the same feed mixture, give each group varying amounts of feed, and measure their weight gain at the end of a 6-week trial.

    • D. 

      Test 5 different types of cows with 5 different feed mixtures, give each group varying amounts of feed, and measure their weight gain at the end of a 6-week trial.

  • 6. 
    Shown below is a growth curve for Paramecium grown in a 1.0 L flask containing pond water at 20oC. The pond water is continually filtered to remove waste products, and nutrients are added at a constant rate. How could the experiment be modified to determine whether the temperature influences the population size of Paramecium?
    • A. 

      Repeat the procedures described using 1 flask, and increase the temperature to 25oC for Days 10-15.

    • B. 

      Repeat the procedures described using 1 flask, and vary the temperature randomly during the entire incubation time.

    • C. 

      Repeat the procedures described using 2 flasks; incubate 1 flask at 15oC and the other at 25oC.

    • D. 

      Repeat the procedures described using 2 flasks; incubate both flasks at 20oC.

  • 7. 
    Scientists collected data on the height and weight of individuals in a population. They recorded their results in this scatterplot. What is the most accurate conclusion regarding the relationship between height and weight?
    • A. 

      Tall individuals are always heavier than short individuals.

    • B. 

      There is no relationship between height and weight.

    • C. 

      There is a negative relationship between height and weight.

    • D. 

      There us a positive relationship between height and weight.

  • 8. 
    Paul and Simon want to determine who is more fit. They decide to run in place for 5 minutes and then measure their blood pressures to see whose returns to notrmal most quickly. They record the data in this table.   Paul told Simon that the heart pumps more blood during exercise than at rest. How do the experiment’s results support Paul’s statement?
    • A. 

      Exercise increases only the pulse.

    • B. 

      Exercise increases only the systolic pressure.

    • C. 

      Exercise increases both the systolic and diastolic pressure.

    • D. 

      Exercise increases both the pulse and the systolic pressure.

  • 9. 
    A researcher counted the number of eggs a single fruit fly laid in 24 hrs for 5 days and recorded the findings in this table. What is the average number of eggs laid per day over the 5 days?
    • A. 

      5

    • B. 

      10

    • C. 

      25

    • D. 

      50

  • 10. 
    The graph represents the average fastest speed of 5 animals recorded in one study. Based on the graph, which species is approximately 1/3 as fast as the cheetah?
    • A. 

      Elephant

    • B. 

      Kangaroo

    • C. 

      Lion

    • D. 

      Snake

  • 11. 
    Ella told her sister the sun would set at 6:30 p.m. and there would be a full moon on Thursday night. Under which basic assumption of science is she operating?
    • A. 

      Nature is orderly.

    • B. 

      Knowledge is superior to ignorance.

    • C. 

      Nothing is self-evident.

    • D. 

      All phenomena have natural causes.

  • 12. 
    Ming is having trouble sleeping and decides to participate in a study to determine whether a certain medication helps people sleep. There are 30 volunteers, each of whom is assigned to 1 of 2 groups. Volunteers in group 1 are given the medication, and volunters in group 2 are given a placebo (a pill with no medication). Which step is important in order to ensure scientifically valid results?
    • A. 

      Assigning the subjects to groups at random

    • B. 

      Assigning all of the subjects with sleeping problems to the placebo group

    • C. 

      Telling subjects if they are receiving the medicine or the placebo

    • D. 

      Ensuring that the researchers can determine which subjects are getting the medicine

  • 13. 
    Edison studies the effects of temperature on starch digestion in a test tube. He adds 2 g of starch and 1 mL of enzyme suspension to a test tube and incubates it at 25oC for 20 min. To accurately test the effects of temperature, Edison should begin a second test with 2 g of starch in a test tube and continue with which set of conditions?
    • A. 

      1 mL of enzyme suspension incubated at 25oC for 10 min

    • B. 

      1 mL of enzyme suspension incubated at 37oC for 20 min

    • C. 

      2 mL of enzyme suspension incubated at 25oC for 20 min

    • D. 

      2 mL of enzyme suspension incubated at 37oC for 10 min

  • 14. 
    A student wants to determine whether temperature affects the rate at which mold grows on bread. The student puts one piece of bread inside a Petri dish, closes the lid, and places the Petri dish in the refrigerator. Which treatment would be the best comparison for this experiment?
    • A. 

      Placing another piece of bread in an open Petri dish in the same refrigerator

    • B. 

      Placing another piece of bread in a closed Petri dish in the same refrigerator

    • C. 

      Placing another piece of bread in an open Petri dish on the countertop

    • D. 

      Placing another piece of bread in a closed Petri dish on the countertop

  • 15. 
    What key factor distinguishes organic compounds from inorganic compounds?
    • A. 

      Organic compounds contain carbon.

    • B. 

      Organic compounds contain hydrogen.

    • C. 

      Organic compounds provide energy for cells.

    • D. 

      Organic compounds are the building blocks of cells.

  • 16. 
    Megan examines a liver cell and observes an organelle with many smooth-sided channels. Which activity would identify this organelle as the Golgi apparatus?
    • A. 

      Digestion of macromolecules and old organelles

    • B. 

      Detoxification of poisonous molecules within the cell

    • C. 

      Harvesting of energy from organic molecules to make ATP

    • D. 

      Processing and packaging of cellular materials prior to export

  • 17. 
    Which process generates most of the ATP produced during cellular respiration?
    • A. 

      Electron transport chain

    • B. 

      Fermentation

    • C. 

      Glycolysis

    • D. 

      Krebs cycle

  • 18. 
    Which solution has the greatest concentration of hydroxide ions (OH-)?
    • A. 

      Urine (pH 6.0)

    • B. 

      Rainwater (pH 5.5)

    • C. 

      Tomato juice (pH 2.0)

    • D. 

      Gastric juice (pH 2.0)

  • 19. 
    Which functional group found in amino acids is absent from monosaccharides, polysaccharides, fatty acids, and glycerol?
    • A. 

      -COOH

    • B. 

      -NH2

    • C. 

      -OH

    • D. 

      -PO4

  • 20. 
    Jenna's favorite breakfast food, papaya, contains significant amounts of the enzyme papain (a protease). What substances does papain help digest?
    • A. 

      Carbohydrates

    • B. 

      Fatty acids

    • C. 

      Nucleic acids

    • D. 

      Proteins

  • 21. 
    How do enzymes speed up chemical reactions?
    • A. 

      By reducing activation energy

    • B. 

      By reducing energy produced by the reaction

    • C. 

      By increasing activation energy

    • D. 

      By increasing energy produced by the reaction

  • 22. 
    The presence of which structure indicates that cells are NOT photosynthetic bacteria?
    • A. 

      Cell wall

    • B. 

      Chloroplast

    • C. 

      DNA

    • D. 

      Ribosome

  • 23. 
    Naomi adds cyclohexamide to cells grown in a test tube. Within minutes, she identifies short incomplete segments of proteins in the cells. On which organelle does cyclohexamide act?
    • A. 

      Endoplasmic reticulum

    • B. 

      Golgi apparatus

    • C. 

      Nucleus

    • D. 

      Ribosome

  • 24. 
    A scientist places a cell in a solution, and over time the cell gains mass and swells. What is the most likely explanation for the cell's gain in mass?
    • A. 

      The solution is hypertonic to the cell.

    • B. 

      The solution is hypotonic to the cell.

    • C. 

      The solution and the cell have equal concentrations of solutes.

    • D. 

      The solution and the cell have equal concentrations of water.

  • 25. 
    The diagram shows a cell membrane composed of a phospholipid bilayer with a channel protein. Each X represents the same type of molecule inside or outside the cell. Facilitated diffusion moves these molecules across the cell membrane. In what direction do these molecules move and through which structure?
    • A. 

      Into the cell through the channel protein

    • B. 

      Into the cell through the phospholipid bilayer

    • C. 

      Out of the cell through the channel protein

    • D. 

      Out of the cell through the phospholipid bilayer

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