The ribosomal RNA (rRNA) genes of different organisms are often compared as a means to classify them because rRNA genes evolve much more slowly than other genes.
a. true
b. false
Answer: a. true
Biology & Microbiology
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Nondisjunction in the sex chromosomes is more severe than in the autosomes
A. true B. false
Biology & Microbiology
The chromosome in bacteria and archaea
A. forms a single linear strand of DNA. B. contains all the cell's plasmids. C. is located in the cell membrane. D. is part of the nucleoid.
Biology & Microbiology
The transparent portion of the outer eye that allows light to enter the eye is the
A. lens
B. cornea
C. pupil
D. iris
Biology & Microbiology
Some photosynthetic euglenoids can also ingest dissolved or particulate food. Which one of the following terms would best describe such a protist?
A. Osmotrophic B. Phagotrophic C. Mixotrophic D. Autotrophic E. Heterotrophic
Biology & Microbiology