Chapter 6 Cell
resolving power (minimum distance 2points can be separated and still be distinguished)
resol. 0.02 um
scanning (surface of specimen)
transmission (internal ultrastructure
Eukaryotic (double membrane bound nucleus)
both surrounded by plasma membrane
allows nutrients, waste, and oxygen to pass
needs large surface area to volume ratio for efficient transfer
flagella (some plant sperm do)
contains most genetic material (chromosomes in chromatin DNA and protein) and nucleolus (ribosome subunit synthesis)
surrounded by double membrane (nuclear envelope, protein filaments called nuclear lamina that keeps shape of nucleus)
continuous with nuclear envelope
two types (rough and smooth)
lipid synthesis (phospholipids, oils, steroids)
carbohydrate metabolism (mobilization of glucose from glycogen in liver)
detoxification of drugs in liver
calcium ion storage
muscle cells contain enzymes that pump calcium ions from cytosol to cisternae
nerve impulse stimulate a muscle cell calcium goes from ER to cytosol triggering contraction
enzymes pump calcium back readying cell for next stimulation
contain lipid vesicles
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