True or false: some RNA molecules possess catalytic activity

A. true B. false


Answer A

Biology & Microbiology

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What is the genotypic ratio of the offspring of two parents who do not show any signs of the deafness but are carriers (Dd)?

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Which of the following statements is correct regarding DNA and RNA?

A) DNA remains in the nucleus at all times; RNA is produced in the nucleus but then leaves the nucleus. B) RNA remains in the nucleus at all times; DNA is produced in the nucleus but then leaves the nucleus. C) DNA and RNA both leave the nucleus after being produced. D) DNA and RNA both stay in the nucleus after being produced.

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The community found on a rotting log would not include:a

mosses. b. rainwater. c. bacteria. d. termites. e. lichens.

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The bottleneck effect

A. occurs when many members of a population die, resulting in a great loss of genetic diversity. B. occurs when many members of a population reproduce, causing too much genetic diversity within the population. C. occurs when small groups of individuals leave their home population and establish new settlements, mating only among themselves. D. occurs when large groups of individuals leave their home population and establish new settlements, mating only among themselves. E. does not occur in nature.

Biology & Microbiology