When air is no longer moving through the respiratory tract and the airway is open to the environment, the pressure within the lung is equal to
A) end-diastolic pressure.
B) transpulmonary pressure.
C) atmospheric pressure.
D) intrapleural pressure.
E) systolic blood pressure.
Answer: C) atmospheric pressure.
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All eukaryotic photosynthesizers are oxygenic.
Answer the following statement true (T) or false (F)
The symbiotic relationship between green algae or cyanobacteria and fungi produce _________________.
Fill in the blank(s) with the appropriate word(s).
The Michaelis constant (Kw) of an enzymatic reaction is _____.
a) a measure of the maximum number of substrate molecules that can be converted to products b) none of the choices is correct c) a measure of the infinity of the enzyme for the substrate under specific reaction conditions d) a measure of the substrate concentration at exactly one half of Vmax
Facilitated diffusion of magnesium ions (Mg++) would occur out of a cell if the Mg++ concentration was ________ outside the cell than inside, and ________.
A) higher; Mg++ could move directly through the phospholipid bilayer of the membrane B) lower; Mg++ could move directly through the phospholipid bilayer of the membrane C) the same; Mg++ could move directly through the phospholipid bilayer of the membrane D) higher; Mg++ could move through a transport protein across the membrane E) lower; Mg++ could move through a transport protein across the membrane