Germinal cells can most likely divide indefinitely due to the activity of an enzyme
called
A.caspases.
B.telomerase.
C.DNA polymerase.
D.RNA transferase.
In smooth muscle cells, ______________ functions in a manner analogous to troponin.
A.myoglobin
B.calmodulin
C.tropomyosin
D.titin
The effects of glucagon are _____________ by insulin.
A.enhanced
B.opposed
C.synergized
D.agonized
Which of the following is NOT an auditory ossicle?
A.incus
B.malleus
C.otolith
D.stapes
Which of the following is true for the first 30 minutes of heavy exercise?
A. Most energy is derived from glycogen and plasma glucose.
B. The percentage of energy obtained from plasma free fatty acids exceeds that of mild
exercise.
C. The percentage of energy obtain from plasma glucose is less than that of moderate
exercise.
D. All apply.
What chemical is released by mast cells that aids in the inflammation process by
causing vasodilation and increased vascular permeability?
A.cytokines
B.heparin
C.histamine
D.proteases
The obligatory water loss needed to excrete metabolic wastes is _____ per day.
A.300 mL
B.400 mL
C.600 mL
D.800 mL
What type of cerebellar cells provide communication to other brain areas?
A. Purkinje cells
B. reticular cells
C. supraoptic cells
D. pyramidal cells
The potential produced by sensory receptors is called a
A. local potential.
B. generator potential.
C. receptor potential.
D. Both generator and receptor potentials are correct.
Ablation of the amygdala and limbic system would primarily result in
A. loss of voluntary muscle contraction.
B. attenuation of aggressive behaviors.
C. loss of ability to detect olfactory inputs.
D. no noticeable effects.
Male androgens
A.stimulate protein synthesis and muscle growth.
B.stimulate bone growth.
C.stimulate erythropoiesis.
D.All of the choices are correct.
Which type of cell lines the ventricles of the brain and help produce cerebrospinal
fluid?
A. microglia
B. satellite cells
C. ependymal cells
D. oligodendrocytes
Blood pressure is measured with a
A.sphygmomanometer.
B.electrocardiograph.
C.spirometer.
D.stethoscope.
A raised area on the cerebral cortex is a
A.sulcus.
B.fissure.
C.gyrus.
D.mirror neuron.
Nitric oxide released by endothelial cells in vascular smooth muscle is responsible for
smooth muscle relaxation and therefore responsible for which of the following?
A.reduced blood flow to bronchioles
B.increased blood flow in placenta
C.increased blood flow to the fetus
D.penile erection
Which of the following is NOT a function of the hypothalamus?
A. controls hunger and thirst
B. controls reactions to odors
C. controls body temperature
D. controls the autonomic nervous system
What keeps the HCN channels open?
A.G-proteins
B.cAMP
C.ATP
D.Ca2+
____________ binds and inactivates the sodium-potassium ATPase pumps of
myocardial cell leading to increased intracellular calcium concentrations and stronger
myocardial contractions.
A.Epinephrine
B.Digitalis
C.Nicotine
D.Caffeine
The ____________ is a cerebral lobe that is involved in memory and integration of
sensory information (mostly pain) with visceral responses.
A.temporal
B.frontal
C.parietal
D.insula
Oxidized nicotinamide adenine dinucleotide (NAD) has ______________ two
hydrogens.
A.lost
B.gained
C.shared
_________ are molecules with the same ratio of atoms but different arrangements of
atoms.
A.Isotopes
B.Structural isomers
C.Stereoisomers
D.Radioactive isotopes
Which of the following is NOT a structure of the small intestine that increases its
surface area?
A.rugae
B.villi
C.plicae circularis
D.microvilli
Viagra is a drug that creates penile erection by
A.indirectly decreasing the breakdown of cGMP.
B.indirectly increasing cGMP production.
C.directly decreasing nitric oxide levels.
D.directly increasing nitric oxide levels.
Particulate matter is nonspecifically taken into cells by the process of
A. exocytosis.
B. phagocytosis.
C. pinocytosis.
D. receptor-mediated endocytosis.
Proteins that extend from the cytoskeleton within the cell, through the plasma
membrane, and into the extracellular matrix are
A. lysosomal proteins.
B. metallo proteins.
C. receptor proteins.
D. integrin proteins.
Loop diuretics such as Lasix
A.inhibit the actions of ADH.
B.add extra solutes to the filtrate.
C.inhibit active transport of salt out of the ascending loop of Henle limb.
D.inhibit salt transport in the first section of the distal tubule.
Polycythemia would be induced by
A.decreased oxygen in the blood.
B.increased oxygen in the blood.
C.decreased carbon dioxide in the blood.
D.increased infection in the blood.
What organ has the most insulin-stimulated glucose uptake in the absorptive state?
A.skeletal muscle
B.brain
C.liver
D.cardiac muscle
Formation of new sarcomeres and growth of myofibrils requires which of the following
proteins?
A. titin
B. nebulin
C. obscurin
D. All apply.
Urea transport in the collecting duct is a(n) __________ process.
A.active
B.passive
C.exocytosis
D.endocytosis
The transport maximum is related to the property known as
A. competition.
B. saturation.
C. specificity.
D. inhibition.