What would be strong evidence to suggest a protist is phototrophic?
A. Locomotion via several flagella
B. A benthic lifestyle
C. The presence of chloroplasts
D. Silicon dioxide cell walls
E. Many lysosomes
Answer: C
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The appearance of air breathing organisms was most dependent upon:a
the accumulation of methane gas in the atmosphere. b. the survival of cyanobacteria on the primitive earth. c. the accumulation of ozone in the upper atmosphere. d. the survival of organisms around undersea thermal vents. e. the absence of predators on the first land masses
Which of the following structures will be the most immediate precursor of the brain?
a. neural tube b. neural groove c. neural crest d. neural folds e. neural plate
Sugar dissolves readily in water because it is a(n) ____ substance
a. adhesive b. cohesive c. hydrophilic d. hydrophobic e. evaporative
What hormone produced in the kidneys stimulates production of red blood cells?
A. erythropoietin B. lipase C. adrenaline D. prolactin E. carbonic anhydrase