The correct answer is: [D]:
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"Eukaryotic cells have a more complex cellular organization."
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Antibiotics are ineffective against viruses<span> because </span>viruses<span> do not have cells.</span>Viruses<span> are infectious agents that live within the cells of other living things. </span>Antibiotics<span>work by breaking down the cell walls of bacteria or interfering with the bacteria's ability to repair its cell's DNA, according to How Stuff Works.</span>
The answer is skeletal muscles. Skeletal
muscle—multinucleated, striated, long cylindrical cells called fibers; located
in deltoid, gastrocnemius, biceps brachii, etc. There are three types of muscle
tissue. Skeletal muscle—multinucleated, striated, long cylindrical cells called
fibers; located in deltoid, gastrocnemius, biceps brachii, etc. Smooth
muscle—no striations, spindle-shaped cells, single nucleus located centrally;
located in wall of arteries, arrector pili muscle, iris, walls of hollow
organs.