.,
....
"
.it
'S
ty
of
North
Texas
Dept.
of
8,o,cg.ca Sce"ces
An
i
mal
PhysIoIoO
Fall
2003
Name:
__________
~
J
__________
_
BIOLOGY 3800
ANIMAL PHYSIOLOGY -
Fall 2003, Exam 1
Section
1: True /False
1
point
each
1.
During synaptic activity, the postsynap
ti
c potential lasts longer than the postsynaptic
current
.. ..
....
..
..
...............
.....
...........
.....
...........
.
...........
........
..
..........
.............
...
.;
=
2.
Diffusion transport requires heat (mole
cu
lar
mo
tion)
as
the direct source
of
energy
.....
....
.
r
=
3.
Diffusion of molecules
is
not defined unless a membrane
is
present...
..
..
....
............
..
........
-
r
4.
Microglia are resident macrophages
in
the
ce
ntral nervous system
.....
...............
..
.......
-
=
5.
The bond strength between carbon ato
ms
in a sugar molecule at room temperature is
between than 10 and 16 kcal/moL
..........
..
.....................................
..
.........
...
.....
...
...........
..
...
-
.
6.
Gap junctions are epefled by calcium ions
..
.
....
!
..
...
•
...
.....
......
..........
.........
.
.....
....
.....
..
.
.......
..
-
=
7.
Cells-swell and may even lyse
in
a 0.9 osmolar solution
.....
:;.
.
~
....
':<:
......
..
........
..
........ ..
.....
....
-
=
8.
The serosal and mucosal sides of an
ep
ithe
li
um must be symmetric for
all
functions
.....
..
. -
=
9.
Sucrose and glucose
in
water form an electrolyte
....................................
..
...........
..
...........
-
=
10.
The intermediate filaments in
ce
ll
s are composed of phospholipids
...........
..
..........
..
......
..
..
T
=
1'1.
Aleons
of motor neurons are very specific:
th
ey fo
rm
onty one (large) synapse
with one musde fiber (or musde
ce
ll
)
..
..........
..
.........
..
..
..
.................
..
...............
..
..
..............
-
F
12.
The
water molecule is a neutral
bu
t polarized molecule
..
....................
..
............................
-
F
13.
The smooth endoplasmic reliculum
in
the axon participates
in
Ca++
regulation
..
..
.
0
=
14.
Tetrodotoxin causes
an
immediate (le
ss
than 10 sec) loss of membrane
po
tential
in all nerve cells
..............
..
..........................
...
..................................................
..
...........
.
F
15.
The rising phase
of
the action pote
nti
al
is
generated primarily by the influx
of
potassium ions.
..
..
.......
...
....
..
..
........
.....
........
....
............................
......
...
..
..
..
...........
..
...
-
F
16
.
The falling phase of the action poten
ti
al is generated by the influx
of
negative chloride
ions which retum the potential to a negative value inside neurons.
.......
..
.............
..
T
F
17.
Graded potentials are generalty
set
f-propagating and travel long distances without
decrement.
.................
..
............................................
..
...................
..
.................
...
..
...
.. .
F
18.
Without the sodium pump, individual ac
ti
on potentials cou
ld
not retum to the rest
in
g
potential level.
...........
..........
...........
..
...........................
.. ..
..................... ........
..
. T
F
19.
The vestibular apparatus consists of the semicircular canals, utriculus, and saccu
lu
s
.....
i
F
20
.
If a depola
ri
zation at the axon hillock reaches threshold,
an
action potential must
follow
...............
..
.
..
..
............................................
..
.
..
...
...
..
..
.
..
...................
..
..
................
..
T
F
21.
The conduction velocity of
an
action potential along an axon depends primarily on
the axon length and on myelinati
on
...............................................
...
..
........................
...
T
f
22.
Microtubules have a diameter of approximately 250 Angtroms
..
.........
..
.......................
..
..
..
cr>
F
23.
The process
of
synthesizing messenger RNA from DNA
is
ca
l
led
"Translation· ...
..
............
T
24.
The
primary structure of a protein deals with the grouping and binding of large
protein subunits .
..
..
............
..
.
......
................................
...
........................
..
..
...
..
................
..
. T
._
25.
Because of their hydrophobic structure, none of the different dasses of lipids are able
If
If
to interact
with
wa
ter .
...
..
........................
...
....................................
..
...............................
.
T
F
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University
of
North Texas
Dept.
of
BiOlogical Sciences,
Animal Physiolog
Fall 2003
Section 2:
Identity
or
Match
1
pt
each
use the following for questions 26-32;
use
(0)
if
no
match
is
possible
(1)
tight junction;
(2)
desmosome;
(3)
zonula adherens;
(4)
paracellular;
(5)
transcellular;
(6)
synaptic junction;
(7)
serosal;
(8)
mucosal;
(9)
gap
junction;
(10)
microvilli;
(11)
endocytosis:
(12)
exocytosis.

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- Spring '03
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