Discover an organism with a single circular chromosome

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When collecting samples from a sulfur spring in Russia, you discover an organism with a single circular chromosome and lacking a nuclear membrane. What sort of organism are you certain that your organism CANNOT be?

a. Methanococcus, an archae
b. Pseudomonas aeruginosa, a bacteria
c. An amoeba
d. Desulfovibrio, a bacteria
e. The newly-discovered sample could not possibly be any of the above types of organisms.

Reference no: EM13109007

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