facultative in a sentence

Examples

1. It is a fastidious, facultative intracellular bacterium which requires cysteine for growth.
2. When anaerobic and facultative cocci were recovered most of the infection were polymicrobial.
3. Strain CKB is a Gram negative, facultative anaerobe belonging to the Betaproteobacteria.
4. It is a facultative anaerobe capable of aerobic respiration.
5. It is a aryl-halorespiring facultative anaerobic myxobacterium.
6. This motile bacillus is a gram negative, facultative anaerobe and a spirochaete.
7. We have three main priorities : life, facultative and specialty lines like aviation.
8. The obligate and facultative ant symbioses and the effect of mutualisms on biotic communities.
9. Allport first points to the decline in " facultative " treatment of mental functions.
10. And facultative anaerobes can grow without oxygen but use oxygen if it is present.