Topics: Bacteria, Protein, Cell membrane Pages: 2 (296 words) Published: September 7, 2012
Indicate whether the sentence or statement is true or false.

____1.Eukaryotic cells are characterized by a lack of a distinct nucleus, whereas prokaryotic cells have intracellular compartments bordered by membranes and a well-defined nucleus.

____2.Lipids and proteins are the major components of the plasma membrane.

____3.Lysosomes remain fully active by maintaining an acid pH created by pumping hydrogen ions into their interiors.

____4.The chief function of ribosomes is to provide sites for lipid synthesis.

____5.If cells are deprived of communication from extracellular chemical messengers, most cells experience apoptosis.

____6.Non-dividing cells, such as myocardial fibers, are capable of hypertrophy, but not hyperplasia.

____7.Dysplasia is a common type of normal cellular adaptation.

____8.Hypertrophy and hyperplasia rarely occur together.

____9.Noise, illumination, and prolonged vibrations can cause cellular injury.

____10.Irreversible damage to the myocardium can be detected by elevation in the contractile protein called troponin, which is released from the myocardial muscle.

____11.Chemical injuries initiate biochemical reactions that damage cell membrane by decreasing the permeability of the plasma membrane.

____12.Aging is the result of a genetically controlled development program or built-in self-destructive processes.

____13.Chromosome abnormalities are the leading cause of mental retardation and miscarriages.

____14.The main function of natural killers cells is recognition and elimination of bacteria.

____15.The inflammatory response is the body’s first line of defense.

____16.Neutrophils are involved in activation of the adaptive immune system.

____17.Several bacteria, such as Mycobacterium tuberculosis, are resistant to killing by granulocytes and can survive inside macrophages.

____18.Resolution is best defined as the restoration of original...
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