EOC Practice Test #3

35 Questions | Total Attempts: 247

SettingsSettingsSettings
Please wait...
EOC Practice Test #3

Questions and Answers
  • 1. 
    Which molecule is paired with its correct role in protein synthesis?
    • A. 

      Nucleus - forms peptide bonds

    • B. 

      Ribosome - carries DNA instructions

    • C. 

      MRNA - joins amino acids

    • D. 

      TRNA - transfers amino acids

  • 2. 
    Which cellular process converts solar energy into chemical energy?
    • A. 

      Respiration

    • B. 

      Transpiration

    • C. 

      Photosynthesis

    • D. 

      Chemosynthesis

  • 3. 
    Which best explains why a bacterial cell is classified as a prokaryote?
    • A. 

      The presence of a nucleus

    • B. 

      The absence of a nucleus

    • C. 

      The presence of a cell wall

    • D. 

      The absence of a cell wall

  • 4. 
    In certain species of roses, white roses and red roses are incompletely dominant to each other. When a red rose and a white rose are crossed, a pink rose is produced. What is the probability of producing a white rose when a red rose is crossed with a pink rose?
    • A. 

      100%

    • B. 

      75%

    • C. 

      25%

    • D. 

      0%

  • 5. 
    Proteins are synthesized in which numbered organelle?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 6. 
    The diagram below shows the feeding relationship for four coral reef organisms. Humans sometimes kill giant tritons in order to collect their attractive spiral shells. If humans kill most of the giant tritons in the coral reef, the coral population will most likely
    • A. 

      Decrease due to a decrease in the parrot fish population.

    • B. 

      Increase due to an increase in the parrot fish population.

    • C. 

      Increase due to a decrease in the crown-of-thorns sea star population.

    • D. 

      Decrease due to an increase in the crown-of-thorns sea star population.

  • 7. 
    In the late 1800s, Christiaan Eijkman studied a disease called beriberi, which is caused by a vitamin deficiency. A disease similar to beriberi occured in chickens that were fed polished rice, which is rice that has the bran layer removed. Chickens that ate unpolished rice did not get the disease. Eijkman convinced officials of a prison experiencing an outbreak of the disease to start feeding the prisoners unpolished rice. The rate of beriberi decreased dramatically. Which procedure would best convince other scientists who questioned his results?
    • A. 

      Feed prisoners chickens that ate only unpolished rice.

    • B. 

      Provide the same number of prisoners with polished rice as with unpolished rice.

    • C. 

      Study other types of animals that had a disease similar to beriberi.

    • D. 

      Compare chickens that ate polished rice to prisoners who ate the polished rice.

  • 8. 
    What is the primary function of DNA in organisms?
    • A. 

      Binds to specific active sites

    • B. 

      Stores genetic information

    • C. 

      Transports amino acids to the ribosomes

    • D. 

      Produces chromosomes for sexual reproduction

  • 9. 
    The roots of some plant species have a special coating to help resist rotting in exteremly wet weather. In which environment is it most beneficial for plants to have rot-resistant roots?
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 10. 
    An ecologist performed a study to determine how the rate of photosynthetic activity in a lake changed from month to month. The results of the study are shown in the graph below. Which conclusion is best supported by the evidence?
    • A. 

      Photosynthetic organisms were dormant during the months of April through August.

    • B. 

      The rate of photosynthesis increased from June through December.

    • C. 

      The rate of photosynthesis was greatest during the months of May through July.

    • D. 

      Photosynthetic organisms experienced die-off during the months of January through June.

  • 11. 
    Which piece of equipment is best for measuring the change in the mass of potato slices after placing them in different concentrations of salt water?
    • A. 

      Beaker

    • B. 

      Metric ruler

    • C. 

      Graduated cylinder

    • D. 

      Triple beam balance

  • 12. 
    Students conducted an investigation using Biuret reagent to determine the presence of proteins in different foods. The results are shown in the table below. According to the data, which foods tested by the students contained proteins?
    • A. 

      Honey and Potato

    • B. 

      Potato and Chicken broth

    • C. 

      Cottage cheese and water

    • D. 

      Cottage cheese and yogurt

  • 13. 
    Which best describes how enzymes function in the body?
    • A. 

      Enzymes are converted into products by the reactions they catalyze.

    • B. 

      Enzymes lower the activation energy of reactions.

    • C. 

      One enzyme can catalyze many different reactions.

    • D. 

      An enzyme is used once and then destroyed by the cell.

  • 14. 
    The graph represents the relationship between an oraganism's oxygen consumption and body mass. Which statement is supported by the information shown in the graph?
    • A. 

      The oxygen consumption of an organism is one-half its body mass.

    • B. 

      The oxygen consumption of an organism is not related to its body mass.

    • C. 

      As the body mass of an organism increases, oxygen consumption decreases.

    • D. 

      As the body mass of an organism decreases, oxygen consumption decreases.

  • 15. 
    An energy pyramid is shown below. Which best explains why an pyramid is used to represent energy flow within an ecosystem?
    • A. 

      Available energy increases when moving up an energy pyramid.

    • B. 

      Available energy decreases when moving up an energy pyramid.

    • C. 

      The size of the organisms decreases when moving up an energy pyramid.

    • D. 

      The population size of the organisms increases when moving up an energy pyramid.

  • 16. 
    Which molecules store and transmit genetic information?
    • A. 

      Lipids

    • B. 

      Proteins

    • C. 

      Nucleic Acids

    • D. 

      Carbohydrates

  • 17. 
    A student notices that the lettuce in a salad wilts soon after salt is added. Wilting most likely occurs because the lettuce cells
    • A. 

      Swell when exposed to salt.

    • B. 

      Absorb the extra salt.

    • C. 

      Release water in the presence of salt.

    • D. 

      Lose oxygen when in contact with salt.

  • 18. 
    The pedigree chart below shows the transmission of genetic traits over several generations. How is this trait inherited?
    • A. 

      Autosomal recessive

    • B. 

      Autosomal dominant

    • C. 

      Sex-linked recessive

    • D. 

      Sex-linked dominant

  • 19. 
    A diagram showing the evolution of eight bird species is shown below. The differences in the species are most likely a result of
    • A. 

      Length of mating season.

    • B. 

      Population size.

    • C. 

      Color of feathers.

    • D. 

      Available food sources.

  • 20. 
    In active transport, carrier proteins
    • A. 

      Move substances across the cell membrane without the use of ATP.

    • B. 

      Move from low concentration to high concentration by diffusion.

    • C. 

      Move small molecules through the cell membrane by osmosis.

    • D. 

      Move substances from low concentration to high concentration through the use of energy.

  • 21. 
    An isolated population of termites lives in a forest surrounded by mountains. These termites feed on dead wood, grasses, and seeds. This food is broken down by species of microorganism that lives inside the intestines of the termites. Without the microorganisms, these termites cannot obtain the nutrients they need to survive. One winter, a virus causes most of these microogranisms to die. As a result of the microorganism's absence, these termites will most likely
    • A. 

      Eat different food.

    • B. 

      Decrease to a level near extinction.

    • C. 

      Evolve immediately into a new species.

    • D. 

      Develop a new species of microorganism.

  • 22. 
    A researcher is studying the damage that predators cause to wings of butterflies. Which tools are best to use to determine the percentage of butterflies with damaged wings?
    • A. 

      Triple beam balance and microscope

    • B. 

      Hand lens and triple beam balance

    • C. 

      Catch net and hand lens

    • D. 

      Microscope and graduated cylinder

  • 23. 
    Diagrams of a bent pinky finger and a straight pinky finger are shown below. The allele for having a bent pinky finger is dominant to the allele for having a straight pinky finger. If two people who are both heterzygous for the trait of a bent pinky finger have a child, what is the percent proabability that the child will have straight pinky fingers?
    • A. 

      0%

    • B. 

      25%

    • C. 

      75%

    • D. 

      100%

  • 24. 
    Which best describes the role of enzymes in a chemical reaction?
    • A. 

      Absorb excess energy

    • B. 

      Release unused energy

    • C. 

      Increase the reaction rate

    • D. 

      Regulate product reactivity

  • 25. 
    Which best describes how meiosis contributes to genetic variation?
    • A. 

      Increases the rate of reproduction with each generation

    • B. 

      Produces a new individual different from either parent

    • C. 

      Decreases the risk of lethal mutations being transmitted

    • D. 

      Forms new DNA that can resist environmental change

Back to Top Back to top