Which Statement Below Is Correct

question 29

Multiple Choice

Which statement below is correct?

• A) In order for fusion to be sustained, the critical mass must be exceeded.
• B) Fission reactions with light nuclei, such as helium are easily controlled but do not produce as much energy as with heavy nuclei.
• C) Breeder reactors are able to convert fissile nuclides into fertile ones, thus "breeding" more fuel.
• D) In a pressurized water reactor, cadmium metal usually acts as the moderator.
• E) requires energetic neutrons in order to undergo fission and subsequently produces .

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Definitions:

Sponges

Simple aquatic animals with a porous body that water flows through, belonging to the phylum Porifera.

Nerve Fibers

Long, thin extensions from neurons that transmit nerve impulses to other cells.

Muscle Fibers

The cells of muscles that contract to produce movement. Muscle fibers are long, cylindrical cells that make up skeletal muscle.

Amoeboid Cells

Cells that move or feed by forming extensions of their cytoplasm, known as pseudopodia, typical of amoebas.