BIOL 1201 GREGG COMPREHENSIVE UPDATED QUESTIONS
AND ANSWERS SURE A+
✔✔In eukaryotic flagella, the fibers that slide past one another due to the activity of
dynein proteins are _______ - ✔✔microtubules
✔✔Many cell organelles, most notably the nucleus, are anchored by ____________
which are assembled from a diverse class of proteins. - ✔✔intermediate filaments
✔✔Centrosomes are sites where protein dimers assemble into ________ -
✔✔microtubules.
✔✔The extension of pseudopodia in amoeba is due to the regulated assembly and
destruction of _________ - ✔✔microfilaments.
✔✔The only cytoskeletal fibers not associated with intracellular movement or whole cell
locomotion are the ___________ - ✔✔intermediate filaments.
✔✔During muscle contractions, myosin motor proteins move across tracks of
____________ - ✔✔microfilaments.
✔✔Which of the following proteins are synthesized by bound ribosomes? - ✔✔ER
protein, insulin, lysosomal enzyme
✔✔the path a secretory protein follows from synthesis to secretion - ✔✔protein
synthesis, endoplasmic reticulum, cis golgi, medial golgi, trans golgi, plasma
membrane, extracellular space
✔✔phagocytosis - ✔✔A type of endocytosis in which a cell engulfs large particles or
whole cells (lysosomes)
✔✔in osmosis, water molecules move towards... - ✔✔higher solute concentration
✔✔hypertonic solution - ✔✔A solution in which the concentration of solutes is greater
than that of the cell that resides in the solution
✔✔hypotonic solution - ✔✔Solute concentration is less than that inside the cell; cell
gains water
✔✔isotonic solution - ✔✔a solution whose solute concentration is equal to the solute
concentration inside a cell
✔✔Crenation - ✔✔shrinking of red blood cells
, ✔✔hemolysis - ✔✔the rupture or destruction of red blood cells.
✔✔Which of the following factors does not affect membrane permeability? - ✔✔The
polarity of membrane phospholipids
✔✔How can a lipid be distinguished from a sugar? - ✔✔Lipids are mostly nonpolar.
✔✔True or false? Osmosis is a type of diffusion. - ✔✔true
✔✔What property of dishwashing liquid (detergent) makes it useful to wash grease from
pans? - ✔✔Amphipathic nature
✔✔Which of the following particles could diffuse easily through a cell membrane? -
✔✔oxygen
✔✔True or false? The water-soluble portion of a phospholipid is the polar head, which
generally consists of a glycerol molecule linked to a phosphate group. - ✔✔true
✔✔If a red blood cell is placed in a salt solution and bursts, what is the tonicity of the
solution relative to the interior of the cell? - ✔✔hypotonic
✔✔started pH = 7, [H+] is increased by 1000, what will be your new pH? - ✔✔4
✔✔pOH = -log[OH-]
pH = -log[H+] - ✔✔inverse relationships
✔✔equation to find pH - ✔✔pH + pOH = 14
✔✔start at pH = 8, increase [OH-] by 100, what is your new pH? - ✔✔10
✔✔non polar bond - ✔✔a covalent bond in which electrons are shared equally
✔✔polar bond - ✔✔a covalent bond in which electrons are shared unequally
✔✔polarity, dissolved by water - ✔✔polar likes polar
nonpolar likes nonpolar
✔✔Is water polar or non-polar? - ✔✔polar
✔✔electronegativity values - ✔✔x < 0.5 = non polar bond
0.5 < x < 1.6 = polar covalent
x > 1.6 = ionic bond
AND ANSWERS SURE A+
✔✔In eukaryotic flagella, the fibers that slide past one another due to the activity of
dynein proteins are _______ - ✔✔microtubules
✔✔Many cell organelles, most notably the nucleus, are anchored by ____________
which are assembled from a diverse class of proteins. - ✔✔intermediate filaments
✔✔Centrosomes are sites where protein dimers assemble into ________ -
✔✔microtubules.
✔✔The extension of pseudopodia in amoeba is due to the regulated assembly and
destruction of _________ - ✔✔microfilaments.
✔✔The only cytoskeletal fibers not associated with intracellular movement or whole cell
locomotion are the ___________ - ✔✔intermediate filaments.
✔✔During muscle contractions, myosin motor proteins move across tracks of
____________ - ✔✔microfilaments.
✔✔Which of the following proteins are synthesized by bound ribosomes? - ✔✔ER
protein, insulin, lysosomal enzyme
✔✔the path a secretory protein follows from synthesis to secretion - ✔✔protein
synthesis, endoplasmic reticulum, cis golgi, medial golgi, trans golgi, plasma
membrane, extracellular space
✔✔phagocytosis - ✔✔A type of endocytosis in which a cell engulfs large particles or
whole cells (lysosomes)
✔✔in osmosis, water molecules move towards... - ✔✔higher solute concentration
✔✔hypertonic solution - ✔✔A solution in which the concentration of solutes is greater
than that of the cell that resides in the solution
✔✔hypotonic solution - ✔✔Solute concentration is less than that inside the cell; cell
gains water
✔✔isotonic solution - ✔✔a solution whose solute concentration is equal to the solute
concentration inside a cell
✔✔Crenation - ✔✔shrinking of red blood cells
, ✔✔hemolysis - ✔✔the rupture or destruction of red blood cells.
✔✔Which of the following factors does not affect membrane permeability? - ✔✔The
polarity of membrane phospholipids
✔✔How can a lipid be distinguished from a sugar? - ✔✔Lipids are mostly nonpolar.
✔✔True or false? Osmosis is a type of diffusion. - ✔✔true
✔✔What property of dishwashing liquid (detergent) makes it useful to wash grease from
pans? - ✔✔Amphipathic nature
✔✔Which of the following particles could diffuse easily through a cell membrane? -
✔✔oxygen
✔✔True or false? The water-soluble portion of a phospholipid is the polar head, which
generally consists of a glycerol molecule linked to a phosphate group. - ✔✔true
✔✔If a red blood cell is placed in a salt solution and bursts, what is the tonicity of the
solution relative to the interior of the cell? - ✔✔hypotonic
✔✔started pH = 7, [H+] is increased by 1000, what will be your new pH? - ✔✔4
✔✔pOH = -log[OH-]
pH = -log[H+] - ✔✔inverse relationships
✔✔equation to find pH - ✔✔pH + pOH = 14
✔✔start at pH = 8, increase [OH-] by 100, what is your new pH? - ✔✔10
✔✔non polar bond - ✔✔a covalent bond in which electrons are shared equally
✔✔polar bond - ✔✔a covalent bond in which electrons are shared unequally
✔✔polarity, dissolved by water - ✔✔polar likes polar
nonpolar likes nonpolar
✔✔Is water polar or non-polar? - ✔✔polar
✔✔electronegativity values - ✔✔x < 0.5 = non polar bond
0.5 < x < 1.6 = polar covalent
x > 1.6 = ionic bond
