January 2019 Living Environment Regents Questions 31-40 Question Preview (ID: 56846)

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Which factor contributed least to the extinction of the passenger pigeon species?

a) laws that banned the hunting of passenger pigeons to sell in new markets

b) improved communication technology, which tracked the pigeon flocks

c) expansion of the railroads, which opened up new markets for selling pigeons

d) increased use of the passenger pigeons as a food source for humans

A direct result of the rapid decline of the passenger pigeon population was most likely

a) an increase in owl and falcon populations

b) an increase in chipmunk and squirrel populations

c) a decrease in fox and chipmunk populations

d) a decrease in squirrel and chestnut tree populations

The extinction of the passenger pigeon illustrates that

a) humans are the only cause of species extinctions

b) it takes hundreds of years for a species extinction

c) the benefits of technology always outweigh the ecological risks

d) human activities can irreversibly affect ecosystems

After 24 hours, the results represented by the diagram demonstrate

a) which of these antibiotics most effectively stopped bacterial growth

b) the nutrient source that resulted in the most bacterial growth

c) whether the bacteria were resistant to most antibiotics or not

d) that these bacteria were harmful to antibiotics

In this experiment, the purpose of using a disc treated with water is that it

a) serves as the conclusion for the experiment

b) is needed to provide additional moisture

c) serves as a control for the experiment

d) is needed as a standard safety procedure

Stage 2 represents a cell that

a) contains half the genetic material of an adult cell

b) shows clear evidence of tissue differentiation

c) has the complete genetic information to form an adult

d) is genetically identical to one of the parents that produced it

The two most likely factors contributing to the decline in the number of these 115 sparrows during year 1 were

a) favorable climate and a rapid reproduction rate

b) lack of predators and an expanding habitat

c) lack of mating and loss of nesting sites

d) disease and predation

The diagnostic test for HIV, the virus that causes AIDS, involves testing the blood for antibodies associated with this pathogen. Antibodies are produced when the body

a) stimulates enzyme production

b) secretes specific hormones

c) detects foreign antigens

d) synthesizes microbes

Which statement best compares the DNA normally found in these two types of cells in an individual?

a) The two cells have identical DNA sequences and use the same section of the DNA to make these two proteins.

b) The two cells have identical DNA sequences, but use different sections of the DNA to make these two proteins.

c) The two cells have different DNA sequences, but use the same section of the DNA to make these two proteins.

d) The two cells have different DNA sequences and use different sections of the DNA to make these two proteins.

An accurate prediction that could be made regarding the information shown in the chart is that

a) a total change from gasoline to ethanol as a fuel would have no effect on greenhouse gas emissions

b) fossil fuels emit the least amount of greenhouse gases

c) the use of any one of the ethanol sources for fuel will each produce less greenhouse gases than the use of gasoline for fuel

d) the use of biomass-based fuels instead of fossil fuels will greatly increase the production of greenhouse gases

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