Factors that affect the rate of diffusion through a

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SP19-BIOL2451WX-cellular organization.doc

1 .   ____________ cells are thin , flat , and often have a bulge where the nucleus is .
a . Polygonal
b . Spheroid
c. Stellate
d . Squamous
e . Columnar
2 .   Which structure increases cell surface area ?
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3 .   The glycolipids and glycoproteins function to
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4 .   Which of the following structures is most closely related to moving particulate matter along the surface of epithelium ?
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5 .   The larger particles do not move across the membrane because
a . The concentration gradient is too small
b . The concentration gradient is too large
c . The membrane is impermeable
d . The membrane is selectively permeable
6 .   Factors that affect the rate of diffusion through a membrane include
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7 .   Which tonicity describes a solution that has a lower concentration of nonpermeating solutes than the intracellular fluid ?
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8 .   Which of the following organelles can be compared to a powerhouse because it supplies the cell with energy ?
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9 .   The nucleus of the cell
a . Is the site of RNA synthesis
b . Is the largest organelle in eukaryotes
c . Has a double membrane
d . All of the above
10 .   Endoplasmic reticulum can be smooth or rough . The rough endoplasmic reticulum is different from the smooth because it has _______ embedded in it .
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11 .   Membrane phospholipids arrange themselves with their hydrophilic ends toward the _ ________ of the membrane and their hydrophobic ends toward the _ _______ of the membrane
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12 .   A protein that adheres to the intracellular face of the plasma membrane is called a ( n )
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13 .   Membrane proteins that aid in communication from other cells are
a . Clonal proteins
b . Motor molecules
c . Receptors
d . Glycocalyx
14 .   When blood pressure in capillaries forces water and dissolved solutes out into the tissue fluid , this is called
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15 .   Blood cells in a hypotonic solution will
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6.Factors that affect the rate of diffusion through a membrane includea.Molecular weight of particleb.Concentration gradientc.Membrane permeabilityd.All of the above
7.Which tonicity describes a solution that has a lower concentration of nonpermeating solutes than the intracellular fluid?
8.Which of the following organelles can be compared to a powerhouse because it supplies the cell with energy?
9.The nucleus of the cell
10. Endoplasmic reticulum can be smooth or rough. The rough endoplasmic reticulum is different from the smooth because it has _______ embedded in it.a.Ribosomesb.Lysosomesc.Peroxisomesd.chromatin
11.Membrane phospholipids arrange themselves with their hydrophilic ends toward the _________ of the membrane and their hydrophobic ends toward the ________ of the membrane
12.A protein that adheres to the intracellular face of the plasma membrane is called a(n)
13.Membrane proteins that aid in communication from other cells are
14.When blood pressure in capillaries forces water and dissolved solutes out into the tissue fluid, this is calleda.Filtrationb.Diffusionc.Osmosisd.Osmotic pressure
15.Blood cells in a hypotonic solution will

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