1) match the correct subatomic particle with the statement about it. answers may be
used once, more than once, or not at all.
a. proton(s)
b. neutron(s)
c. electron(s)
1>an ion has gained or lost ________.
2> isotopes of the same element differ by having different numbers of ________.
3> the identity of an element can be determined by the number of ________.
2) which of these is matched incorrectly?
a) innate immunity – nonspecific responses
b) acquired immunity – responses directed toward specific invaders
c) active immunity – an immune response started and developed by the cells
d) actively acquired immunity – immunity passed via the placenta or milk to offspring
e) each of these is correctly described.
3) match each leukocyte to its normal percentage in a differential cell count.
a. 50-70%
b. 20-40%
c. 2-8%
d. 1-4%
e. < 1%
monocytes
4) immunoglobulins that are found on the surface of b lymphocytes and may play a role
in regulation of the humoral immune response are
a) iga.
b) igd.
c) ige.
d) igg.
e) igm.
5) each amino acid differs from others in the
a) number of central carbon atoms.
b) size of the amino group.
c) number of carboxyl groups.
d) chemical structure of the r group.
e) number of peptide bonds in the molecule.
6) signal molecule receptors exhibit
a) specificity only.
b) competition only.
c) saturation only.
d) competition and saturation only.
e) specificity, competition, and saturation.
7) an integrating center
a) is the disturbance or change that sets the pathway in motion.
b) is an electrical and/or chemical signal that travels to the effector.
c) evaluates incoming signals and compares it with the setpoint.
d) is the minimum stimulus that must be achieved to set the reflect response in motion.
8) most reflex movements are integrated by
a) the brain.
b) the spinal cord.
c) central pattern generators.
d) proprioceptors.
e) effectors.
9) why is there a range of 30-32 atp molecules produced from one glucose molecule?
a) sometimes the electron transport system is more efficient than other times.
b) the nadh molecules produced during glycolysis are in the cytoplasm; occasionally,
electrons are carried by the lower energy fadh2 instead of nadh.
c) individual variation is normal among cells.
d) any of these answers may work under different cellular conditions.
10) thyroid hormones
a) are lipophilic.
b) are hydrophilic.
c) must bind to plasma proteins for transport to target cells.
d) are lipophilic and must bind to plasma proteins for transport to target cells.
e) are hydrophilic and must bind to plasma proteins for transport to target cells.
11) which of the following will best increase the conduction rate of action potentials?
a) increase the diameter of the axon, decrease the resistance of the axon membrane to
ion leakage.
b) increase the diameter of the axon, increase the resistance of the axon membrane to
ion leakage.
c) decrease the diameter of the axon, decrease the resistance of the axon membrane to
ion leakage.
d) decrease the diameter of the axon, increase the resistance of the axon membrane to
ion leakage.
12) after stretching an intrafusal fiber, the next event is
a) an increase in action potentials along the associated sensory neuron.
b) a decrease in muscle tension.
c) a decrease in muscle tone.
d) decreased sensitivity to stretching.
e) all of the answers are correct.
13) human gametes contain ________ chromosomes.
14) the tail of the sperm is actually a(n) ________.
15) compare and contrast primary active transport and secondary active transport,
noting any special differences.
16) in comparison to skeletal muscle, smooth muscle cells function over a ________
range of muscle lengths and exhibit a speed of contraction that is ________ than
skeletal muscle.
17) carl is suffering from hypothyroidism. what is hypothyroidism? how could his
physician determine whether the malfunction is in the hypothalamus and pituitary or at
the level of the gland itself?
18) jerry is in an automobile accident that severs his spinal cord at waist level. after his
recovery, he wonders if he will still be able to have an erection, enjoy sex, and father a
child. what would you tell him?
19) name two cytokines involved in hematopoiesis. what is the name of the cytokine
that plays an important role in the immune system?
20) the muscle layer of the heart wall is the ________.
21) human eyes are sensitive to light in the visible spectrum between the wavelengths
of ________.