Protruding papulae on the surface of echinoderms improve respiratory efficiency by ______.
A. increasing the concentration difference
B. increasing the surface area for diffusion
C. decreasing the distance for diffusion
D. changing the diffusion constant
B. increasing the surface area for diffusion
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The gene locus governing flower color in snapdragons exhibits ____ because heterozygous individuals appear pink
while homozygous individuals are either white or red.
a. codominance b. equilibrium c. autosomal dominance d. complete dominance e. incomplete dominance
Which of the following is associated with Marfan syndrome?
a. lanky, loose jointed skeleton b. reduced eye sight
c. calcium deposits in the liver d. excessive production of red blood cells e. skin becomes elastic
What results when nitrogen dioxide and hydrocarbons react in the presence of sunlight?
a. photochemical smog b. industrial smog c. a thermal inversion d. acid rain e. particulate fallout
Select the phosphorylation reaction:a
glucose + fructose ? sucrose + H2O b. glucose + ATP ? glucose-P + ADP c. glucose-P + fructose ? sucrose + Pi d. glucose + glucose ? maltose e. sucrose + H2O ? glucose + fructose