bio 227 exam 2 review Questions and Answers
what is the study of cells called? ** Answ** cytology
what are the 3 components of a typical cell? ** Answ** nucleus, plasma membrane, cytoplasm
definition of cytoplasm ** Answ** all cellular components contained between the pla...
what is the study of cells called? ** Answ** cytology
what are the 3 components of a typical cell? ** Answ** nucleus, plasma membrane,
cytoplasm
definition of cytoplasm ** Answ** all cellular components contained between the plasma
membrane and nucleus
another word for cytosol ** Answ** intracellular fluid
what are 3 types of extensions of the cell surfaces? ** Answ** cilia, microvilli, flagellum
what is the barrier separating the cytoplasm from the interstitial fluid? ** Answ** plasma
membrane
what are the 3 primary components of cytoplasm? ** Answ** cytosol, organelles, inclusions
what does the word organelles mean? ** Answ** little organs
what are general cell functions? ** Answ** -maintain integrity & shape of cell
-obtain nutrients & form chemical building blocks
-dispose of wastes
what is mostly found in the plasma membrane? ** Answ** phospholipids
, what is 1 function that the phospholipid bilayer can do? ** Answ** cytosol remains inside of
the cell, interstitial fluid remains outside
what are glycolipids called? ** Answ** sugar antennae
T or F? is the plasma membrane a selectively permeable boundary? ** Answ** true
T or F? diffusion is the movement of water ** Answ** false
T or F? active transport involves the movement of a molecule DOWN its concentration gradient
** Answ** false
what does phagocytosis mean? ** Answ** cellular eating
what is contained in plasma? ** Answ** liquid substances containing dissolved proteins
examples of passive processes ** Answ** -diffusion
-osmosis
-channel-mediated
-carrier-mediated
T or F? vesicular transport requires cellular energy ** Answ** True
hypotonic solution means? ** Answ** interstitial fluid has higher water than cytosol
examples of inclusions are ** Answ** glycogen, pigments, triglycerides
the sodium-potassium pump is ** Answ** active
what does RMP mean? ** Answ** resting membrane potential
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