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B lymphocytes are responsible for cell-mediated immunity.
The primarily hydrophilic leader sequence of secretory proteins allows it to be inserted
into the cisterna of the endoplasmic reticulum.
Pseudopods can be used for both amoeboid movement and phagocytosis.
Neutrophils and monocytes are able to leave the blood and enter tissues via diapedesis.
Mutation of the gene encoding for cholecystokinin would limit pancreatic bicarbonate
secretion.
All axons in the PNS have a myelin sheath.
A molecule that gains a hydrogen is also oxidized.
At saturation, enzyme activity is maximal.
Fats and carbohydrates are the primary energy stores in the body.
In the complete process of aerobic respiration, the major source of reduced NAD and
FAD is glycolysis.
Hormone receptors have a high capacity and a low affinity.
Diarrhea often results when the osmolarity of the fecal matter in the colon is increased.
Renal insufficiency often results from dialysis.
All mitochondria that an individual has came solely from the mother's fertilized egg
cell.
Increasing arterial blood temperature decreases the affinity of hemoglobin for oxygen.
The kidneys provide short term adjustments to maintain body pH.
Damaging the diencephalon would inhibit detection of sensory stimuli.
Theoretically, complete catabolism of glucose generates a maximum of 32 ATP.
Phasic receptors adapt rapidly to maintained stimuli.
Proteins that combine with other molecules are said to be condensed.
Immunoglobulins are synthesized and secreted by B lymphocytes.
Lymphatic vessels form a complete, closed circuit around the body.
Individuals with an increased hematocrit would probably be anemic.
One mole of solute per liter depresses the freezing point of water by -1.86C.
The capillaries' function is exchange of gases, nutrients, and wastes with the tissues.
Veins carry blood away from the heart.
Renal clearance is decreased by reabsorption and increased by secretion.
ADH secretion is stimulated when osmoreceptors in the hypothalamus detect a decrease
in blood osmolality.
The proximal convoluted tubule reabsorbs approximately 65% of water and ions salt
entering it.
If the effects of sympathetic and parasympathetic stimulation are similar, then the
effects would be cooperative.
Adrenergic receptors are found on the surface of postganglionic sympathetic neurons.
Epigenetic changes can not be passed on to a zygote.
Proprioceptors allow for individuals to determine the position of a limb or body part.
The anterior pituitary gland is also called the neurohypophysis.
Endocrine glands secrete their products into ducts.
As the pH of the blood decreases, the amount of hydrogen ions in the blood would
decrease.
Glycolysis is an endergonic reaction.
Drugs that are useful for treating asthma are
A.COX-2 inhibitors.
B.anti-leukotrienes.
C.COX-3 inhibitors.
D.COX-1 inhibitors.
__________ is a steroid hormone secreted by the adrenal cortex which stimulates
kidney salt reabsorption in the kidneys.
A.ADH
B.Aldosterone
C.Renin
D.Angiotensin
In response to increased internal temperature blood flow to the skin will
A.increase.
B.decrease.
C.remain unchanged.
The process of blood cell formation is
A.leukocytosis.
B.polycythemia.
C.hematopoiesis.
D.hemogenesis.
What provides intrinsic regulation of the GI tract?
A.hormones
B.autonomic nervous system
C.enteric nervous system
D.All of the choices are correct.
A measure of the distensibility of the lungs is
A.compliance.
B.elasticity.
C.surface tension.
D.None of the choices are correct.
FAD is derived from vitamin
A.B-12.
B.B-3, niacin.
C.B-2, riboflavin.
D.B-6.
Meiosis is only observed in the _____________ and ___________.
A.skin, finger nails
B.ovaries, breasts
C.testes, skin
D.ovaries, testes
What type of intravenous fluid would be given to reduce edema?
A. hypertonic
B. isotonic
C. hypotonic
Energy can change forms, but cannot be created or destroyed is a statement of the
A.first law of thermodynamics.
B.second law of thermodynamics.
C.law of mass action.
D.third law of thermodynamics.
The softest sound which could be heard would have an intensity of
A.0 decibels.
B.0.1 decibels.
C.1 decibel.
D.10 decibels.
An atom with 5 protons, 5 neutrons, and 6 electrons would have a net charge of
A. -1.
B. -2.
C. +1.
D. +2.
The decline in physical strength of older persons is due to
A. decreased size of fast-twitch fibers.
B. reduced density of blood capillaries.
C. reduced muscle mass.
D. All apply.
Where does the bicarbonate secreted by the pancreas come from?
A.bicarbonate in the blood
B.CO2 in the blood
C.acini cells
D.pancreatic islets
A decrease in total peripheral resistance would cause blood flow to
A.increase.
B.decrease.
C.remain unchanged.
What type of cell signaling occurs through the extracellular matrix to nearby target
cells?
A. endocrine signaling
B. synaptic signaling
C. gap junctions
D. paracrine signaling
Which of the following statements is true of the cerebral cortex?
A.Sensations from the feet would be on the most inferior area of the somatesthetic
cortex.
B.Areas of the body with the greatest density of receptors will have larger areas on the
somatesthetic cortex.
C.The hands have a very small area on the motor cortex.
D.The left side of the motor cortex controls muscles on the left side of the body.
The movement of the troponin-tropomyosin complex requires
A. ATP.
B. Ca2+.
C. acetylcholine.
D. Na+.
What action produces an IPSP on the postsynaptic membrane?
A. influx of Na+ ions
B. opening of Ca2+ channels into the neuron
C. outflow of K+ ions
D. opening of Cl- channels into the neuron
One of the factors that increases body heat during adaptive thermogenesis is the
production of ___________ by skeletal muscle. This product causes leakage of protons
from the intermembrane space of the mitochondria.
A.uncoupling protein
B.insulin
C.glycogen
D.glucagon
The second messenger mediating the effects of norepinephrine on the heart would be
A.increased intracellular Ca2+.
B.decreased Ca2+.
C.increased cyclic AMP.
D.decreased intracellular cyclic AMP.
A codon codes for a(an)
A. mRNA.
B. fatty acid.
C. carbohydrate.
D. amino acid.
Immunological competence develops
A.during gestation.
B.at the onset of puberty.
C.at birth.
D.shortly after birth.
Which of the following minerals is needed only in trace amounts by the body?
A.sodium
B.potassium
C.iron
D.calcium
About 60% of the volume of semen is produced by the
A.seminal vesicles.
B.prostate gland.
C.bulbourethral glands.
D.testes.
Genetic disorders can be detected earliest by
A.amniocentesis.
B.chorionic villus biopsy.
C.newborn screening.
D.ultrasound.
The lymphatic system can help cancer _________ since cancer cells may enter,
circulate, and later exit porous lymphatic capillaries.
A.treatment
B.reversion
C.metastasize
D.lymphedema
What hormone stimulates uterine contractions during labor and milk-ejection during
lactation?
A.prolactin
B.ADH
C.oxytocin
D.luteinizing hormone
The disease ______________ is characterized by destruction of CNS myelin sheaths
and the formation of hardened scars.
A. Parkinson's
B. Alzheimer's
C. multiple sclerosis.
D. myasthenia gravis
Tissue damage by free radicals is prevented to some extent by all of the following
EXCEPT
A.beta-carotene.
B.vitamin C.
C.vitamin D.
D.vitamin E.
Drugs such as Zantac and Tagamet helps to gastritis and ulcers by
A. blocking H2histamine receptors.
B. blocking H1histamine receptors.
C. inhibiting proton pumps.
D. killing bacteria.
People with diabetes mellitus have polyuria because
A.they have inadequate amounts of ADH.
B.they have greater oncotic pressure in the kidney tubules.
C.they have inadequate amounts of aldosterone.
D.they drink a lot of water.
Which of the following is NOT true of dendrites?
A. transmits action potentials toward the cell body
B. are thin extensions of the cell body
C. transmit graded electrochemical impulses toward the cell body
D. contain receptive areas
Central fatigue is caused by
A. decreased H+ concentration in the muscle cells.
B. increased glycogen in muscle cells.
C. changes in the CNS.
D. All apply.
