Multiple choice Which of the following bacteria are spirochetes? Mycobacterium leprae and Corynebacterium diphtheriae Neisseria gonorrhoeae and Escherichia coli Chlamydia trachomatis and Chlamydia psittaci Treponema pallidum and Borrelia burgdorferi Calothrix and Xenococcus Reveal answer Fill a bubble to check yourself D Correct answer Explanation Treponema pallidum and Borrelia burgdorferi are spirochetes.