Nine (orders/families/classes) represent the highest level of taxonomic rank used in classifying viruses.
Fill in the blank(s) with the appropriate word(s).
orders
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Ribozymes are ____
a. RNA catalysts b. proteins that catalyze RNA synthesis c. RNA molecules that slow the rate of protein synthesis
d. the products of RNA degradation e. amino acids that catalyze RNA synthesis
Gause’s experiments with Paramecium growing in
test tubes demonstrated that a. organisms with similar niches evolve enough to survive in different niches. b. organisms with slightly different nutritional requirements change to become exclusive competitors. c. organisms with similar nutritional requirements may compete to the point of extinction. d. organisms with slightly different nutritional requirements change to become exclusive competitors, and organisms with similar nutritional requirements may compete to the point of extinction. e. organisms with similar niches evolve enough to survive in different niches, and organisms with similar nutritional requirements may compete to the point of extinction.
Bryophytes lack vascular tissue and lignin and therefore cannot
A. sexually reproduce. B. grow tall. C. asexually reproduce. D. produce a gametophyte stage. E. produce a sporophyte stage.
How is budding of bacteria to produce daughter cells different from binary fission?
A. The bud doesn't receive any DNA B. A septum must form during budding C. The chromosome does not need to be replicated D. The cytoplasmic division is unequal