In _________________, substances move from an area of high concentration to an area of lower concentration. In ____________, water is the substance that is moving from a high to a low concentration of water. A. osmosis, diffusion B. diffusion, osmosis C. active transport, passive transport D. diffusion, filtration Which of the following best describes the function of hepatic portal circulation? A. circulatory route to allow the passage of arterial blood form the GI tract to the liver B. circulatory route to allow venous blood to bypass the liver on its way back to the ingerior vena cava c. circulatory route to allow for venous blood form the GI tract to be routed to the liver before returning to the inferior vena cava D. Circulatory route allowing for the delivery of oxygenated blood from the liver to the GI tract organs. The myelin sheath in the central nervous system is provided by which of the following neuroglial cells? A. Schwann cells B. Microglial cells C. Oligodendrocytes D. Ependymal cells In _______________ metabolism, the conversion of glucose to pyruvate releases ATP. This type of metabolism provides energy when there is a reduction of _____________ available for the cell. A. anaerobic, oxygen B. anergic, carbonic acid C. aerobic, glucose D. anaerobic, ADP Why do most cells in the body require oxygen molecules? A. Glucose cannot be broken down without oxygen. B. Oxygen is generated by the conversion of pyruvic acid to oxaloacetic acid in the Kreb\'s cycle. C. The electron transport system must pump oxygen through the inner membrane for chemiosmosis. D. ATP synthase uses oxygen to add a phosphate ion to ADP in order to make ATP. E. Oxygen accepts electrons from the electron transport chain in oxidative phosporylation. F. All of the above A. osmosis, diffusion B. diffusion, osmosis C. active transport, passive transport D. diffusion, filtration Which of the following best describes the function of hepatic portal circulation? Solution 1] In diffusion, substances move from an area of high concentration to an area of lower concentration. In osmosis, water is the substance that is moving from a high to a low concentration of water. Example of diffusion is opening a perfume bottle and the smell spreads across the room 2] Which of the following best describes the function of hepatic portal circulation? C. circulatory route to allow for venous blood form the GI tract to be routed to the liver before returning to the inferior vena cava Another name for the hepatic portal system is the portal venous system. The purpose of hepatic portal circulation is to deliver blood from some parts of the gastrointestinal tract to the liver. In other words, blood is drained from the digestive organs and the spleen, gall bladder, and pancreas and the blood is then delivered to the liver. The vein that is used for this process is the hepatic portal vein. 3] The myelin sheath in the central nervous system is provided by which of the following neuroglial cells.

1. In _________________, substances move from an area of high concentration to an area of lower
concentration. In ____________, water is the substance that is moving from a high to a low
concentration of water.
A. osmosis, diffusion
B. diffusion, osmosis
C. active transport, passive transport
D. diffusion, filtration
Which of the following best describes the function of hepatic portal circulation?
A. circulatory route to allow the passage of arterial blood form the GI tract to the liver
B. circulatory route to allow venous blood to bypass the liver on its way back to the ingerior
vena cava
c. circulatory route to allow for venous blood form the GI tract to be routed to the liver before
returning to the inferior vena cava
D. Circulatory route allowing for the delivery of oxygenated blood from the liver to the GI tract
organs.
The myelin sheath in the central nervous system is provided by which of the following neuroglial
cells?
A. Schwann cells
B. Microglial cells
C. Oligodendrocytes
D. Ependymal cells
In _______________ metabolism, the conversion of glucose to pyruvate releases ATP. This type
of metabolism provides energy when there is a reduction of _____________ available for the
cell.
A. anaerobic, oxygen
B. anergic, carbonic acid
C. aerobic, glucose
D. anaerobic, ADP
Why do most cells in the body require oxygen molecules?
A. Glucose cannot be broken down without oxygen.
B. Oxygen is generated by the conversion of pyruvic acid to oxaloacetic acid in the Kreb's
cycle.
C. The electron transport system must pump oxygen through the inner membrane for
chemiosmosis.
D. ATP synthase uses oxygen to add a phosphate ion to ADP in order to make ATP.

2. E. Oxygen accepts electrons from the electron transport chain in oxidative phosporylation.
F. All of the above
A. osmosis, diffusion
B. diffusion, osmosis
C. active transport, passive transport
D. diffusion, filtration
Which of the following best describes the function of hepatic portal circulation?
Solution
1]
In diffusion, substances move from an area of high concentration to an area of lower
concentration. In osmosis, water is the substance that is moving from a high to a low
concentration of water.
Example of diffusion is opening a perfume bottle and the smell spreads across the room
2]
Which of the following best describes the function of hepatic portal circulation?
C. circulatory route to allow for venous blood form the GI tract to be routed to the liver before
returning to the inferior vena cava
Another name for the hepatic portal system is the portal venous system. The purpose of hepatic
portal circulation is to deliver blood from some parts of the gastrointestinal tract to the liver. In
other words, blood is drained from the digestive organs and the spleen, gall bladder, and
pancreas and the blood is then delivered to the liver. The vein that is used for this process is the
hepatic portal vein.
3]
The myelin sheath in the central nervous system is provided by which of the following neuroglial
cells?
C. Oligodendrocytes
Oligodendrocytes form myelin sheaths around axons in the CNS; Schwann cell forms myelin
sheaths around axons in the PNS
4]
In aerobic metabolism, the conversion of glucose to pyruvate releases ATP. This type of
metabolism provides energy when there is a reduction of glucose available for the cell.
Aerobic, glucose
5]
Why do most cells in the body require oxygen molecules?

3. F. All of the above
Glucose cannot be broken down without oxygen. Oxygen is generated by the conversion of
pyruvic acid to oxaloacetic acid in the Kreb's cycle. The electron transport system must pump
oxygen through the inner membrane for chemiosmosis. Oxygen accepts electrons from the
electron transport chain in oxidative phosporylation.