Biology EOC Mock Exam: Most Missed Items

What will most likely be the result if all of the mitochondria are removed from a plant cell?

• It will be unable to carry out respiration.

• It will lose water through osmosis.

• It will break down the ribosomes in the cell.

• It will be unable to photosynthesize.

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Why is meiosis important for sexual reproduction?

• It allows the zygote formed from fertilization to have triple the chromosome number of the organism.

• It allows gametes to have twice the original number of chromosomes of the organism.

• It allows gametes to have half the original number of chromosomes of the organism.

• It allows the zygote formed from fertilization to have half the original number of chromosomes of the organism.

Which technique would most likely be used by forensic scientists?

• gene cloning

• gene therapy

• DNA fingerprinting

• karyotyping

This diagram shows a plant cell. Which structure is found in a plant cell but is absent in an animal cell?

• 1

• 2

• 3

• 4

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A freshwater plant is placed in a container of saltwater. What will most likely happen to the cells of the plant?

• They will swell because water will move into them.

• They will swell because salt will move into them.

• They will shrink because water will move out of them.

• They will shrink because salt will move out of them.

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The construction of a new coal-burning power plant would have the greatest impact on which environmental issue?

• depletion of the ozone

• production of acid rain

• release of radiation

• increase in deforestation

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The inheritance of short wings in Drosophila fruit flies is an x-linked, recessive trait. Which would most likely result if a short-winged female mates with a long-winged male?

• All offspring will be short-winged

• All females will be long-winged, and all males will be short-winged.

• All females will be short-winged, and all males will be long-winged.

• Half of the males and females will be short-winged, and half will be long-winged.

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A large population of cockroaches was sprayed with an insecticide. A few of the cockroaches survived and produced a population of cockroaches that was resistant to this spray. What can best be inferred from this example?

• A species will adapt no matter what the environment.

• The environment has no effect on the survival of an organism.

• Insecticides cause mutations that are passed on to the next generation.

• Individuals with favorable variations survive and reproduce.

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At night, moths travel toward light. Which type of behavior does this describe?

• habituation

• imprinting

• innate behavior

• learned behavior

Which environmental factor would cause the greatest decrease in the number of species of plants and animals living in some of the lakes in the United States?

• increase in dissolved oxygen levels

• global warming

• ozone destruction

• acid rain

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