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which are principle parts of a eukaroytic cell?
organelles
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The cell membrane is dscribed as a fluid mosaic. Protiens have a degree of mobility within the lipid bilayer.
The first and second setnence are true. The second is relevant to the first.
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which particle can penetrate cell membranes easily?
lipid soluble, transport protein present
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For a cell to engage in active transport processes it requires
mitochondria, appropriate fuel, ATP, and enzymes
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Which is inconsistent with the others??
Phagocytosis...the others all had to do with diffusion, filtration, osmosis, and facilitated diffusion
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Which can transport substances uphill again the concentration gradient ?
Active transport
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Caveolae
serve as repositories for some receptors, provide route for all transport into a cell, and relay signals into cells
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Which statement is true for cytoplasm ?
it lis located outside the nucleus, provides support for the organelles and is mostly water
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The retinoblastoma (Rb) protein?
is a brake in teh progress of the cell cycle , binds to gene regulatory proteins, and slows cell proliferation
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A major function of connective tissue is ?
support and binding
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Which are charateristics of epithelial tissue?
protection and secretion
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Increase cyptoplasmic calcium??
decreases permability at the junctional complex
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Cell junctions?
coordinate activities of cells within tissues and hold cells together
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The eight specialized cellular functions are:
mocement, conductivity, metabolic, absorption, secretion, excretion, respiration, reproduction, and communication
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What is ATP??
it functions as an energy transferring molecule. Energy is stored by molecules of carbs, lipids, and protein which when catabolized transefer energy to ATP
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What is oxidative phophorlation?
it occurs in the mitochondria and is the mechanism by which the energy produced from the carbs, fats, and proteins is transferred to ATP.
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The four basic types of tissue?
epithelial, muscle, nerve, and connective tissue
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What is neural tissue?
is is composed of highly specialized cells called neurons that recieve and transmit electrical impulses rapidly across junctions called synapses
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What is the purpose of epithelial tissue?
it covers mos the the internal and external surfaces of the body. It also protects, absorps, and excretes
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What is the purpose of connective tissue?
It binds and connects various tissues and organs together, supporting them in their locations and serving as storage sites for excess nutrients.
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What is the purpose of muscle cells?
it is composed of long, thin, highly contractile cells or fibers called myocytes. Muscle tissue that is attached to bone enables voluntary movement. In the internal organs it enables involuntary movement such as the heart
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