In a study of ponds and nearby terrestrial ecosystems, Tiffany Knight and colleagues showed that the presence of fish in ponds had indirect, positive effects on the seed set of terrestrial plants. In particular, fish exerted this influence through their direct, negative effects on which organisms?
A) larval dragonflies
B) adult dragonflies
C) insect pollinators of plants
D) plants
Ans: A) larval dragonflies
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In which of the following properties are the archaea more like eukaryotes than the bacteria?
A) size B) microtubules and microfilaments C) translation initiation D) mode of cell division E) both translation initiation and mode of cell division
Chemicals released by plants to inhibit germination and establishment of other species is known as
A) consumption. B) allelopathy. C) toxicopathy. D) competitive exclusion.
Many antibacterial antibiotics interfere with protein synthesis. Why wouldn't this strategy be suitable in the selection of antifungal drugs?
A. Fungi produce few proteins. B. Fungi can rapidly metabolize drugs. C. Fungi can counteract such drugs by absorbing new proteins during decomposition. D. Human and fungal proteins are too similar. E. Chitin cell walls prevent uptake of drugs.
Which one of the following is the most rigorous form of professional regulation?