Chemicals that play the dominant role in protecting plants from being eaten by herbivores or predators are called
A. primary compounds.
B. secondary compounds.
C. poisons.
D. oils.
E. amino acids.
B. secondary compounds.
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The ____ are limited to three groups of proteobacteria
a. chemoautotrophs only b. chemoheterotrophs c. photoautotrophs d. photoheterotrophs only e. chemoautotrophs and photoheterotrophs
What is the result of crossing over?
a. mutation b. sex selection c. recombination d. gene linkage
The integration site for sensory and motor information in humans is the
A. basal nuclei. B. cerebellum. C. thalamus. D. cerebral cortex. E. hippocampus.
The mitochondrial cristae are an adaptation that
A) helps mitochondria divide during times of greatest cellular respiration. B) increases the space for more copies of the electron transport chain and ATP synthase complexes. C) allows other ions (like Na+) to build up when H+ ions are not available. D) carefully encloses the DNA housed within the mitochondrial matrix. E) permits the expansion of mitochondria as oxygen accumulates in the mitochondrial matrix