Chemicals used to attract mates are called
A. hormones.
B. allomones.
C. pheromones.
D. allelopaths.
E. None of these choices are correct.
C. pheromones.
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It is thought that the oldest stage of cellular respiration from an evolutionary perspective is
A. the krebs cycle. B. the electron transport chain. C. fermentation. D. glycolysis.
Uptake of low-density lipoproteins (LDLs) occurs by
A) simple diffusion. B) bulk-phase endocytosis. C) facilitated transport. D) receptor-mediated endocytosis. E) pinocytosis.
Which of the following is NOT a characteristic of
some mollusks? a. radula b. mantle c. gills d. pseudocoel e. shell
From an evolutionary standpoint, which of the following structures is considered the oldest, most primitive division of the brain?
A) forebrain B) midbrain C) hindbrain D) cerebrum E) corpus callosum