4/21 Review 2

The chemical equation below shows the reaction between glucose and oxygen.

What process does this equation represent?

• Photosynthesis

• Aerobic respiration

• Anaerobic respiration

• Nitrogen fixation

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NGSS.HS-LS1-7

NGSS.HS-LS2-3

Ocean waters have varying carrying capacities for phytoplankton and other organisms that perform photosynthesis. The carrying capacity is very high near the surface and then decreases with depth. It is zero in the deepest ocean waters.

Which statement about the water is most useful for explaining this variation?

• Temperature decreases with depth

• Brightness decreases with depth

• Salinity increases with depth

• Dissolved carbon dioxide decreases with depth

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

Human activities that disrupt the carbon cycle include the burning of fossil fuels.

Which statement best summarizes this disruption?

• Burning fossil fuels increases the energy stored in carbon compounds.

• Burning fossil fuels adds carbon compounds to all Earth systems.

• Burning fossil fuels transforms carbon from compounds to its element form.

• Burning fossil fuels shifts carbon compounds from the geosphere to the

  atmosphere.

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NGSS.HS-ESS2-6

A flock of one species of bird arrives on a group of sparsely populated islands. With little or no competition, different species of birds evolve from the original species.

This is an example of

• divergent evolution

• convergent evolution

• dynamic equilibrium

• graduated equilibrium

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NGSS.HS-LS4-4

NGSS.HS-LS4-5

A forest area is being harvested for specific types of plants, causing a reduction of resources for organisms. The organism most likely to become extinct as a result of this activity is

• one with a specialized diet

• one with a high rate of reproduction

• one that feeds from a variety of sources

• one that has a great amount of genetic variation

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NGSS.HS-LS2-7

NGSS.HS-LS4-5

A researcher presented the results from an experiment on the effectiveness of a new type of eyedrops. The eyedrops were designed to prevent contact lenses from drying out and irritating the eyes. The researcher tested the eyedrops over a two-year period using subjects who wore various types of contact lenses. The results of the research showed that the eyedrops did prevent contact lenses from drying out. Before manufacturing the new drops, the researcher must verify that his results are free of bias by

• extending his research for three more years

• investigating similar products and their results

• testing a larger population of subjects using different brands

• having an independent research company perform the same investigation

A single sensory neuron cell extends from a person's large toe to an area adjacent to the spinal canal of the central nervous system. Which process is responsible for the length of this cell?

• Cell reproduction

• Cell division

• Cell growth

• Cell diffusion

A cell is completing DNA replication. What phase of the cell cycle is it in?

• G1

• S

• G2

• Mitosis

What phase of mitosis is this cell in?

• Prophase

• Metaphase

• Anaphase

• Telophase

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NGSS.HS-LS1-4

Which of the following enzymes breaks the hydrogen bonds between the two DNA strands during DNA replication and transcription?

• helicase

• DNA polymerase

• RNA polymerase

• telomerase