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BMS 300 Exam 4 CSU – questions with answers
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BMS 300 Exam 4 CSU – questions with answers
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BMS 300 Exam 4 CSU – questions withanswers
Maltase, Lactase and Sucrase are all ________________________ that function as enzymes to break
down their respective disaccharide. - ** VERIFIED ANSWERS **✔✔transmembrane proteins
Where would you expect to find blood that is Oxygen poor, but nutrient rich? - ** VERIFIED
ANSWERS **✔✔hepatic portal vein
How does glucose get into the hepatic portal system? - ** VERIFIED ANSWERS **✔✔Glut2 on the
basilar side of the enterocytes
Lipase converts triglycerides into a monoglyceride and 2 molecules of fatty acids in the unstirred
layer of the small intestines. (t or f) - ** VERIFIED ANSWERS **✔✔False
The Na+ driven co-transporters for glucose and amino acids are located on what side of the
membrane? - ** VERIFIED ANSWERS **✔✔apical
The ability to digest the milk sugar lactose is unique to mammals. At the time of weaning, this gene
is normally turned off by a regulatory gene located upstream from the lactase gene. A single base
change in the regulatory gene can prevent it from inactivating the lactase gene and permit the
persistence of lactase expression into adulthood. These spontaneous mutations in the regulatory
gene have occurred independently in several human populations. About 8000 years ago such a
mutation occurred in one individual in central Norther Europe. This individual and his or her
offspring had such a selective advantage that in some Northern European populations 90- 95% of the
population have the mutant regulatory gene. In two East African cultures, singl nucleotide changes
in the regulatory gene, which are distinct from one another and different from the European
mutation, have imparted lactase persistence in these populations. - ** VERIFIED ANSWERS
**✔✔duct, from the lumen into epithelial cell
The products of the disaccharideas described in the statement enter the ______________ and are
converted to _________________ in hepatocytes. - ** VERIFIED ANSWERS **✔✔hepatic portal
blood, glycogen
, Smooth muscle concentration in the _______________ would decrease Glomerular Filtration Rate
(GFR) - ** VERIFIED ANSWERS **✔✔afferent arteriole
Blocking the Na+/K+/2Cl- transporter with the diuretic furosemide (Lasix) would occure in the - **
VERIFIED ANSWERS **✔✔thick segment of ascending limb
In the pulmonary capillaries, carbonic anhydrase in erythrocytes predominantly generates: - **
VERIFIED ANSWERS **✔✔CO2 from HCO3- and H+
The diaphragm is innervated by _________________________ whose neuronal cell bodies are
located in the ____________________ and innervate ______________________. - ** VERIFIED
ANSWERS **✔✔lower motor neurons, spinal cord, skeletal muscle
Following a pneumothorax where a penetrating wound has opened the pleural sac the lung collapses
because the intrapleural pressure is _________________ the atmospheric pressure. The effect is the
result of ____________________. - ** VERIFIED ANSWERS **✔✔same as, elastic recoil
The peripheral chemosensors that can affect breathing rate monitor CO2 and O2 in _____________
blood - ** VERIFIED ANSWERS **✔✔arterial
Much of the autonomic innervation of the gastrointestinal system is parasympathetic. You would
expect the preganglionic neurons that help modulate smooth muscle activity in this system to have
their cell bodies in the __________________ and release ________________. - ** VERIFIED
ANSWERS **✔✔brainstem, ach
In the absorption of fat, ___________________ are released from the basilar membranes of
enterocytes and taken up by __________________ capillaries in the villi. - ** VERIFIED ANSWERS
**✔✔chylomicrons, lymphatic
In the Bohr effect, blood pH falls, and is most pronounced in __________________ where the
_________ is higher than ______________________. - ** VERIFIED ANSWERS **✔✔the tissues,
PCO2, in the lung
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