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chapt3 review

QuestionAnswer
the smallest unit capable of life by itself is the cell
the major types of lipid found in the plasma membranes are cholesterol and phospholipids
membrane junctions that allow nutrients or ions to flow from cell to cell are gap junctions
the term used to describe the type of solution in which cells will lose water to their environment is hypertonic
osmosis always involves selectively permeable membrane, a difference in solvent concentration and diffusion (abc)
psychologist observes that the concentration of sodium inside a cell is decidedly lower than that outside of cell.what cellular function tht is lacking in dead ells explains the difference? active transport (solute pumping)
the solute-pumping type of active transport is accomplished by changes in shape and position of carrier molecules in the plasma membrane
endocytotic process in which a sampling of particulate matter is engulfed and brought into the cell is called phagocytosis
which is not true of centrioles? they are membrane walled barrels lying parallel to each other
nuclear substance composed of histone proteins and DNA is chromatin
information sequence that determines the nature of a protein is the gene
mutations may be caused by all of these
pahse of mitosis during which centrioles reach the poles and chromosomes attach to the spindle is prophase
final preparations for cell division are made during the life cycle subphase called g2
a nerve cell and a lymphocyte are presumed to differ in their specialized structure and suppressed enes and embryonic history
a pancreas cell makes proteins which it releases to the small intestine. which of the following best describes the path of these proteins from synthesis to exocytosis at the pancreatic cell;s plasma membrane (PM) rough ER-Golgi-PM
Created by: 1607566894
 

 



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