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advanced pathophysiology exam 1 with correct answers

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advanced pathophysiology exam 1 with correct answers

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advanced pathophysiology exam 1 |||\\\ |||\\\ |||\\\ |||\\\




with correct answers |||\\\ |||\\\




What are the properties of a eukaryotic cell - correct answer✔✔• Well define nucleus.
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• cells are larger and have more extensive intracellular anatomy and organization than do
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prokaryotes. |||\\\




• cells bind with deoxyribonucleic acid (DNA) and are involved in the super coiling of DNA.
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• cells have several chromosomes, protein production or synthesis
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. it consists of three components: outer membrane called plasma membrane, a fluid filling
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called cytoplasm, and the intra cellular organs or organelles |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




How do cells communicate with each other and the environment outside the cell - correct
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answer✔✔Cells communicate by using hundreds of signal molecules. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




-they display plasma membrane-bound signaling molecules (receptor) that affect the cell itself
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and other cells in direct physical contact
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-they affect receptor proteins inside the target cell and the signal molecule has to enter the cell
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to bind to them
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-they form protein channels (gap juctions) that directly coordinate the activities of adjacent
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cells.



responsable for cellular respiration and energy production - correct answer✔✔mitocondria |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




they provide sites for cellular protein synthesis - correct answer✔✔ribosome
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is the largest membrane bound organelle and is usually found in the cell center, main function
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




is cell division and control of genetic information - correct answer✔✔nucleus
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,is a small dense structure composed largely of RNA and combine it with proteins - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




answer✔✔nucleolus



are saclike structures that originate from the golgi complex and contain digestive enzymes -
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correct answer✔✔lysosomes |||\\\ |||\\\




specializes in the synthesis and transport of the protein and lipid components of most of the |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




cells organelles - correct answer✔✔endoplasmic reticulum
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proteins from the endoplasmic reticulum are processed and packaged into small membrane -
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correct answer✔✔Golgi apparatus or complex |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




membrane organelles that contain several oxidative enzymes such as catalase and urate |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




oxidase. those enzymes use oxygen to remove hydrogen in an oxidative reaction that produces
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




hydrogen peroxide. - correct answer✔✔peroxisomes |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




it is the gelatinous, semiliquid portion of the cytoplasm. functions include: intermediary
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metabolism involving enzymatic biochemical reactions; ribosomal protein synthesis and storage |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




of carbohydrates, fat and secretory vesicles - correct answer✔✔cytosol
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maintains the cell's shape and internal organization - correct answer✔✔cytoskeleton |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




cells secrete local chemical mediators that are quickly absorbed, destroyed and immobilized. -
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




correct answer✔✔paracrine |||\\\ |||\\\




cancer cells use this form of signaling to stimulate their survival and proliferation. it function as
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




a component of normal growth regulatory mechanism. - correct answer✔✔autocrine
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diffuses across the synaptic cleft and acts on the postsypnaptic target cells - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




answer✔✔neurotransmitter

, are released by one set of cells and travel through the tissue and through the bloodstream to
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produce a response in other set of cells - correct answer✔✔hormone |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




proteins float in the fluid lipid bilayer. is a membrane structure that consists of a variety of |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




individual protein molecules moving and shifting within a fluid bilayer of phospholipids. - |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




correct answer✔✔fluid mosaic model |||\\\ |||\\\ |||\\\ |||\\\




second messenger - correct answer✔✔are molecules that relay signals received at receptors|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




on the cell surface |||\\\ |||\\\ |||\\\




are generated in large numbers when the membrane bound enzyme is activated, and they then
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rapidly diffuse away from their source, broadcasting the signal throughout the cell. The two
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major pathways are cyclic adenosine monophosphate (AMP, CAMP) and Ca. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




• a signal molecule such as epinephrine binds to a cell surface receptor, it activate a G protein
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




inside the cell |||\\\ |||\\\




• The G protein stimulates adenylyl cyclase to produce large amounts of cyclic AMP from ATP
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• Then cAMP binds to and activate a target protein such as a-kinase which adds phosphate to
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




specific protein within the cell |||\\\ |||\\\ |||\\\ |||\\\




How does oxidative phosphorylation work? - correct answer✔✔Occurs in the mitochondria
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and is the mechanism by which the energy produce from cahydrates, fats, and proteins is
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transferred to ATP. The process by which ATP is formed |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




: is the passive movement of a solute from an area of higher solute concentration to an area of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




lower solute concentration. - correct answer✔✔diffusion |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




is the movement of water across a semipermeable membrane from a region of lower solute
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\




concentration to a region of higher solute concentration. - correct answer✔✔Osmosis |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\

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