The figure illustrates
a. a pyramid of energy.
b. a pyramid of biomass.
c. a grazing food web.
d. a detrital food web.
e. the recycling of energy in an ecosystem.
C
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The club fungi are members of which of the
following? a. Ascomycetes b. Basidiomycetes c. Glomeromycetes d. Chytrids e. Zygomycetes
Which of the following cell types would be associated with the greatest concentration of low-density lipoproteins (LDLs)?
A) skin B) muscle C) connective tissue D) blood E) liver
Atmospheric pressure at sea level is equal to a column of 760 mm Hg. Oxygen makes up 21 percent of the atmosphere by volume. The partial pressure of oxygen ( ) in such conditions is _____
A) 160 mm Hg B) 16 mm Hg C) 21/760 D) 760/21
How many protons are translocated across the inner mitochondrial membrane by complex IV for every pair of electrons passing through the electron transport chain?
A) 0 B) 1 C) 2 D) 3 E) 4