DNA and RNA both contain phosphate and ribose
Indicate whether the statement is true or false
FALSE
Explanation: They both contain phosphate, but DNA contains the sugar deoxyribose rather than ribose.
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Simberloff and Wilson carried out a famous experiment to study the recolonization by arthropods of small mangrove by islands after the islands were fumigated. One of their findings was
A. several species of birds were facilitators of recolonization. B. species turnover was high following recolonization. C. recolonization was identical on all of the islands regardless of size. D. species richness changes little following recolonization. E. high diversity relative to the mainland.
The oldest known megafossils of early vascular plants may be characterized as:
a. possessing dichotomously branched stems with leaves. b. possessing dichotomously branched stems without leaves or roots. c. possessing erect stems with megaphylls. d. possessing roots but lacking sporangia. e. lacking roots but possessing megaphylls.
Viruses contain both DNA and RNA
Indicate whether the statement is true or false
Classification.Respond to the following statements in reference to the five animal phyla listed below.
A. B. Trilobites were members of this phylum. C. This phylum has the greatest number of species. D. Although most members are enclosed by hardened shells, this phylum name literally means "soft body." E. The larval stage in this phylum has bilateral symmetry, whereas the adult stage exhibits radial symmetry. F. Members of this phylum use tentacles to push captured prey through the mouth into their gastrovascular cavity.