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...