The Three-Domain System of classification is based on differences in which one of the following molecules?

A) mRNA
B) peptidoglycan
C) rRNA
D) tRNA


C) rRNA

Biology & Microbiology

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Adult T-cell leukemia is thought to be caused by

A. parvoviruses. B. herpesviruses. C. picornaviruses. D. retroviruses.

Biology & Microbiology

The enzyme _____ prevents chromosomes from shortening at the tips after each round of DNA replication

A. DNA polymerase. B. telomerase. C. topoisomerase II. D. DNA ligase. E. DNA replicase

Biology & Microbiology

Scientists have found that extinction rates among ____ are accelerating rapidly

a. endangered species b. trigger species c. bird species d. amphibian species e. plant species

Biology & Microbiology

Give an example of a hydroskeleton and explain how it provides the support necessary for movement

What will be an ideal response?

Biology & Microbiology