Practice Quiz

NAEP Science Grade 12 - Question List

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146.
The Calvin cycle is the process by which:
  1. Carbon dioxide is fixed and converted into carbohydrates.
  2. Hydrogen ions are generated and used to make NADPH.
  3. Electrons become excited and are used to produce ATP.
  4. Oxygen is removed from water molecules and released as a gas.
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147.
The mechanism by which ATP provides energy for the metabolic processes of a cell involves the:
  1. Generation of heat by hydrolysis of a phosphate group.
  2. Transfer of a phosphate group to other molecules.
  3. Lowering of the activation energy required for phosphorylation.
  4. Absorption of light by pigments during phosphorylation.
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148.
Which of the following situations best demonstrates phagocytosis?
  1. A bacterium is surrounded by a plasma membrane, engulfed, and enclosed by a vacuole.
  2. An antigen binds to a specific receptor on the surface of a plasma membrane, which invaginates around the antigen.
  3. A food particle is surrounded by a plasma membrane, engulfed, and diffuses through the lipid bilayer.
  4. An antibody within the cell is enclosed in a vesicle that fuses with the plasma membrane and releases the antibody from the cell.
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149.
Unlike mitosis, binary fission:
  1. Occurs in prokaryotic cells.
  2. Requires formation of a spindle.
  3. Increases genetic variability.
  4. Results in identical daughter cells.
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150.
One application of gene therapy is the delivery of p53 genes to cells. These genes cause cells that malfunction to undergo programmed death. This method would be most effective at:
  1. Preventing cancer from being inherited.
  2. Treating polygenic disorders related to cancer.
  3. Inhibiting the development of cancerous tumors.
  4. Improving the response of healthy cells to chemotherapy.
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