In comparison to bacteria that do have cell walls, ________ is a consequence of mycoplasmas lacking a cell wall.
A) larger cytoplasmic volume
B) frequent existence as obligate symbionts
C) higher sensitivity to osmotic lysis
D) inability to survive protoplasts lysing conditions
Campylobacter and Helicobacter are two genera within the ________ class of Proteobacteria.
A) Alphaproteobacteria
B) Betaproteobacteria
C) Deltaproteobacteria
D) Epsilonproteobacteria
Which group in Bacteria lacks cell walls?
A) Corynebacterium
B) Mycoplasma
C) Sporosarcina
D) Tenericutes
Which bacillus-shaped genus are primarily intracellular parasites of arthropods such as crustaceans and insects?
A) Coxiella
B) Klebsiella
C) Roseospirillum
D) Wolbachia
The ability to form endospores in bacteria within Bacillales, Clostridiales, and Lactobacillales suggests the genotype/phenotype evolved
A) at least three separate times in these divergent orders.
B) at least once, and horizontal gene transfer among relatives explains its presence in other orders.
C) only once in an ancestor to these three orders, due to the high number of genes required.
D) either at least once and horizontal gene transfer among relatives occurred or once in a common ancestor.
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