Biology EOC Practice Questions - Bank 1

37 Questions | Total Attempts: 61

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Biology EOC Practice Questions - Bank 1

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Questions and Answers
  • 1. 
    Which of the following is not an example of a scientific model?
    • A. 

      A diagram of a plant cell

    • B. 

      A Styrofoam solar system made by a 6th-grade science student

    • C. 

      A 3-D computer image of an atom

    • D. 

      A data table from a plant-growth experiment

  • 2. 
    Which of the following is the best example of biodiversity?
    • A. 

      Birds have feathers of different colors.

    • B. 

      There are only 400 Siberian Lynx left in the wild.

    • C. 

      There are 75 different kinds of cells in the body.

    • D. 

      There are over a million different species in the jungles of Africa.

  • 3. 
    ___ is the process of maintaining proper internal conditions such as water balance, blood sugar levels, and pH.
    • A. 

      Homeostasis

    • B. 

      Protein synthesis

    • C. 

      Biodiversity

    • D. 

      Adaptation

  • 4. 
    Finch species in the Galapagos Islands have a wide variety of beak shapes. The theory of natural selection suggests that these differences arose because
    • A. 

      Changes occurred over a short period of time.

    • B. 

      The birds on different islands have different food sources.

    • C. 

      Conscious decisions let certain finches survive.

    • D. 

      Some finches nest on rocks.

  • 5. 
    A scientist wants to know how a certain fertilizer affects the growth of tomato plants growing in two different soils. What conclusion can be drawn from the graph shown here?
    • A. 

      Soil 1 and Soil 2 are the same

    • B. 

      The fertilizer has a greater effect in Soil 1

    • C. 

      The fertilizer has a greater effect in Soil 2

    • D. 

      Soil 1 absorbed more fertilizer than Soil 2

  • 6. 
    Which of the following groups is most important for bringing energy into an ecosystem?
    • A. 

      Consumers

    • B. 

      Producers

    • C. 

      Decomposers

    • D. 

      Generalists

  • 7. 
    What would most likely result if nitrogen-fixing bacteria in an area were destroyed?
    • A. 

      Vegetation in the area would grow at a faster rate.

    • B. 

      Vegetation in the area would grow at a slower rate.

    • C. 

      Vegetation in the area would not be affected.

    • D. 

      Vegetation in the area would find other nutrient sources.

  • 8. 
    A scientist wants to measure the size of a cactus population in a desert valley. What method should she use?
    • A. 

      Radio telemetry

    • B. 

      Mark-recapture sampling

    • C. 

      Quadrat sampling

    • D. 

      Computer modeling

  • 9. 
    In which direction does energy flow through this energy pyramid?
    • A. 

      1,2,3,4

    • B. 

      4,3,2,1

    • C. 

      3,1,4,2

    • D. 

      1,3,4,2

  • 10. 
    In the carbon cycle, through what process does carbon move from an abiotic resource into organic matter?
    • A. 

      Combustion

    • B. 

      Decomposition

    • C. 

      Respiration

    • D. 

      Transpiration

  • 11. 
    This food web shows the relationships between organisms in an ecosystem. Which type of organism not shown in this food web is important to the stability of the ecosystem?
    • A. 

      Decomposer

    • B. 

      Tertiary consumer

    • C. 

      Photoautotroph

    • D. 

      Heterotroph

  • 12. 
    In many parts of the United States, native plants that once grew on the forest floor have been replaced by garlic mustard, an invasive species that thrives in cool forest understories. This situation is an example of ___.
    • A. 

      Parasitism between species.

    • B. 

      Primary succession between species.

    • C. 

      Predation between species.

    • D. 

      Competition between species.

  • 13. 
    Archaeologists find that the disappearance of a large mammal occurred shortly after the arrival of hominids in a certain area. What most likely occurred between these two species?
    • A. 

      Dispersion

    • B. 

      Predation

    • C. 

      Parasitism

    • D. 

      Commensalism

  • 14. 
    What is the function of autotrophs in the carbon cycle?
    • A. 

      To use oxygen to produce glucose

    • B. 

      To take in excess water

    • C. 

      To use carbon dioxide to produce glucose

    • D. 

      To feed on herbivores

  • 15. 
    Which of these best completes the concept map?
    • A. 

      Extreme drought

    • B. 

      Acid rain

    • C. 

      An earthquake

    • D. 

      Pollution

  • 16. 
    A student constructs several terrariums like the one shown. Each terrarium is exposed to a different amount of sunlight each day. In order to determine the ideal amount of sunlight, which of the following variables must be held constant?
    • A. 

      Types of plants

    • B. 

      Wavelengths of light

    • C. 

      Growth rate of plants

    • D. 

      Amount of sunlight

  • 17. 
    Bacteria adapt more quickly to environmental changes than elephants. Which best explains this difference?
    • A. 

      Individual bacteria have more genes

    • B. 

      Bacteria reproduce more rapidly

    • C. 

      Individual bacteria grow more steadily

    • D. 

      Bacterial populations are more isolated

  • 18. 
    The structures labeled B are called ___.
    • A. 

      Glycerides

    • B. 

      Fatty acids

    • C. 

      Amino acids

    • D. 

      Phosphate groups

  • 19. 
    The ___ form of this molecule is found in animals and is ___ at room temperature.
    • A. 

      Saturated… solid

    • B. 

      Unsaturated… liquid

    • C. 

      Unsaturated… solid

    • D. 

      Saturated… liquid

  • 20. 
    If you ate bacon and fried eggs for breakfast, the largest component of the energy would come from the ___.
    • A. 

      Carbohydrates

    • B. 

      Proteins

    • C. 

      Sugars

    • D. 

      Lipids

  • 21. 
    Organic compounds ALL contain the element carbon. Which organic compound, used for stored chemical energy, contains carbon, hydrogen, oxygen, and often phosphorous?
    • A. 

      Carbohydrates

    • B. 

      Lipids

    • C. 

      Sugars

    • D. 

      Proteins

  • 22. 
    Water (H2O) is an example of a molecule whose atoms are held together by which of the following?
    • A. 

      Hydrogen bonds

    • B. 

      Covalent bonds

    • C. 

      Ionic bonds

    • D. 

      Metallic bonds

  • 23. 
    The specific chemical that an enzyme will act on is called a(n)___.
    • A. 

      Protein

    • B. 

      Catalyst

    • C. 

      Substrate

    • D. 

      Amino acid

  • 24. 
    A bond that is formed when two atoms share electrons is called a ___.
    • A. 

      Covalent bond

    • B. 

      Ionic bond

    • C. 

      Hydrogen bond

    • D. 

      James bond

  • 25. 
    The picture at the right is an example of a(n) ___.
    • A. 

      Bonding model

    • B. 

      Super model

    • C. 

      Atomic model

    • D. 

      Molecular model

  • 26. 
    Gametes must be haploid because ___.
    • A. 

      Gametes are small and can hold only the haploid number of chromosomes

    • B. 

      Fertilization results with a haploid zygote

    • C. 

      Two gametes will unite during fertilization to create a diploid cell

    • D. 

      The gametes’ chromosomes will be replicated prior to cell division

  • 27. 
    What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
    • A. 

      0 in 4

    • B. 

      1 in 4

    • C. 

      2 in 4

    • D. 

      4 in 4

  • 28. 
    What is the probability that a heterozygous black-fur rabbit will produce white-fur offspring if its mate is a homozygous recessive rabbit?
    • A. 

      P = 1/4

    • B. 

      P = 1/2

    • C. 

      P = 3/4

    • D. 

      P = 1

  • 29. 
    The picture shows a student’s experiment with a common aquatic plant. Which change in this experiment is most likely to increase the volume of oxygen gas that accumulates in the top of the tube?
    • A. 

      Use fewer plants

    • B. 

      Replace the beaker with a larger container

    • C. 

      Move the light source closer to the beaker

    • D. 

      Reduce the amount of water

  • 30. 
    Both male and female rats have genotype Bb. Based on a Punnett square, Carol concluded that the phenotypic ratio of the monohybrid cross is 2:1:1. What mistake did Carol make?
    • A. 

      The ratio should be 2:1

    • B. 

      The ratio should be 1:2:1

    • C. 

      The ratio should be 3:1

    • D. 

      The ratio should be 1:1:1:1

  • 31. 
    In which phase of meiosis would certain gene segments of the homologous pairs of chromosomes "cross over" and exchange genetic information?
    • A. 

      Prophase II

    • B. 

      Anaphase I

    • C. 

      Prophase I

    • D. 

      Metaphase II

  • 32. 
    All the individuals of a species that live in a particular area are called a ___.
    • A. 

      Population

    • B. 

      Fossil

    • C. 

      Genus

    • D. 

      Group

  • 33. 
    The total permanent disappearance of a species from Earth is called ___.
    • A. 

      Extinction

    • B. 

      Coevolution

    • C. 

      Equilibrium

    • D. 

      Natural selection

  • 34. 
    What is the term for a molecule that combines with enzymes, undergoes a chemical reaction, and changes into new substances?
    • A. 

      Substrate

    • B. 

      Synthetic

    • C. 

      Peptide

    • D. 

      Protein

  • 35. 
    DNA is composed of nucleotide subunits, each of which contains a ___.
    • A. 

      Ribose molecule

    • B. 

      Phosphate group

    • C. 

      Uracil base

    • D. 

      Protein

  • 36. 
    Which process produces the greatest amount of ATP?
    • A. 

      Aerobic respiration

    • B. 

      Fermentation

    • C. 

      Anaerobic respiration

    • D. 

      Photosynthesis

  • 37. 
    In the ladder-like model of DNA, the vertical “backbones” consist of ___.
    • A. 

      Nucleotides

    • B. 

      Nitrogen bases

    • C. 

      ATP

    • D. 

      Sugar and phosphate groups