The placental hormone which stimulates glucose sparing by maternal tissues is
A.chorionic somatomammotropin.
B.chorionic gonadotropin.
C.progesterone.
D.estrogen.
Phagocytosis is important for
A. body defense against foreign organic matter.
B. promoting inflammation.
C. removal of old and dying cells.
D. All apply.
ATP and adenosine can act as neurtransmitters
A. by being released from astrocytes.
B. as cotransmitters.
C. as paracrine regulators.
D. All apply.
The organelle that acts as enzymes for protein synthesis is the
A.mitochondrion.
B.ribosome.
C.nucleolus.
D.lysosome.
The inability of muscle cells to relax due to high frequency stimulation is termed
A. treppe.
B. recruitment.
C. twitch.
D. tetanus.
John has blood type B. In an emergency, John could receive which of the following
blood types?
A.B only
B.AB only
C.O only
D.B or O
A solution freezing at -1.98C
A. is hypotonic to plasma.
B. is isotonic to plasma.
C. is hypertonic to plasma.
D. is not related to plasma.
ATP formation in glycolysis and the citric acidcycle is called
A. substrate level phosphorylation.
B. oxidative phosphorylation.
C. direct phosphorylation.
D. Both substrate level phosphorylation and direct phosphorylation are correct.
The cardiac control center of the _______ coordinates the autonomic innervation of the
heart.
A.pons
B.cerebrum
C.medulla oblongata
D.midbrain
Membranes can be formed by ____________ tissue.
A.nervous
B.muscular
C.neuroglial
D.epithelial
The form of hemoglobin with iron in an oxidized state is
A.oxyhemoglobin.
B.deoxyhemoglobin.
C.methemoglobin.
D.carboxyhemoglobin.
Phagocytosis differs from endocytosis in that with phagocytosis
A. the plasma membrane invaginates to produce a furrow that pinches off inside the
cell.
B. the plasma membrane extends outwards with pseudopods to surround the substance.
C. specific membrane receptors bind to the molecules to be brought into the cell.
D. None apply.
Which is true of immediate hypersensitivity reactions?
A. B cells are involved.
B. IgE antibodies are the immune effectors.
C. Antihistamines can be used to treat them.
D. All of the choices are correct.
The sounds heard during the first phase of blood-pressure measurement are
A.murmurs.
B.snapping sounds.
C.thumping sounds.
D.muffled thumping sounds.
The most numerous of all cells of CNS nervous tissue are the
A. astrocytes.
B. neurons.
C. Schwann cells.
D. microglia
___________________ comprise an important family of enzymes that can break down
extracellular matrix proteins but require a zinc ion cofactor.
A. Matrix metallohydrolases
B. Matrix phosphokinases
C. Matrix metalloproteinases
D. None apply.
Left side heart failure results in pulmonary congestion and edema.
Dominant retinitis pigmentosa is characterized by
A.deterioration of the striate cortex.
B.degeneration of photoreceptors.
C.degeneration of the optic nerve.
D.degeneration of the cornea.
Mutation in complement protein number 1 would directly
A.prevent complement recognition.
B.prevent complement fixation.
C.prevent opsonization.
D.prevent complement activation.
0.12 to 0.20 second is the duration of the _________ in a normal heart.
A.diastole
B.QRS wave
C.Q-T interval
D.P-R interval
The movement of chromosomes during mitosis is due to
A.spindle fibers.
B.telomeres.
C.chromatids.
D.actin and myosin.
The structure for hearing is the
A.vestibular apparatus.
B.spiral organ.
C.organ of Corti.
D.Both the spiral organ and the organ of Corti are correct.
The ____________ has a medulla derived from ectoderm and a cortex derived from
mesoderm.
A.adrenal gland
B.pancreas
C.thyroid gland
D.pituitary gland
Fatty acid metabolism
A.occurs via glycolysis.
B.occurs via oxidative deamination.
C.occurs via the Cori cycle.
D.occurs via beta-oxidation.
Telomeres serve to
A.increase apoptosis.
B.cap the ends of DNA and protect it from damage.
C.break DNA and cause it to degrade.
D.cause replication of genes.
_________________ is a disorder in which acidic gastric juice travels up the
esophagus.
A.Gastroenteritis
B.Gastroesophageal reflux disease
C.Pernicious anemia
D.Gastritis
What type of nerve fibers are stimulated by capsaicin that causes apnea, then rapid,
shallow breathing?
A.myelinated A fibers
B.unmyelinated C fibers
C.unmyelinated B fibers
D.myelinated C fibers
The ___________ lobe is involved in converting short-term memory to long-term
memory.
A. inferior temporal
B. inferior lateral
C. prefrontal
D. medial temporal
Which of the following is a characteristic of smooth muscle?
A.The cells are branched.
B.These cells are attached to skeletal bones by tendons.
C.Intercalated discs connect adjacent cells.
D.These cells are found in the digestive tract.
Alpha and beta interferons will inhibit
A.growth of cancer cells.
B.viral replication and assembly.
C.activity of natural killer cells.
D.All of the choices are correct.
Energy lost during the process of aerobic cell respiration is given off as
A. carbon dioxide.
B. water.
C. oxygen.
D. metabolic heat.