FtsZ, MreB, and CreS proteins regulate the shape and structure of bacterial (prokaryote) cells. These proteins are homologous to the _______ in eukaryotes.
A. DNA processing enzymes
B. cytoskeleton
C. organelles
D. cell wall
B. cytoskeleton
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Which of the following microbes can oxidize ferrous iron while using chlorate or perchlorate as the electron acceptor?
A. Ferribacterium limneticum B. Pseudomonas denitrificans C. Thiobacillus ferrooxidans D. Dechlorosoma suillum
Mannose sugar occurs on the surface of some bacteria and fungi and can trigger the
A. release of cytotoxins by NK cells. B. release of histamines by basophils. C. classical pathway of complement activation. D. lectin pathway of complement activation. E. release of NETs by neutrophils.
Which of the following forms of energy was NOT involved in the production of large organic molecules in the primitive reducing atmosphere?
A. radiation from the sun B. electrical energy C. sound D. heat E. radioactivity
Which is characteristic of codons (Select all that apply)?
a. are three-base sequences of mRNA b. are complementary to anticodons c. are base triplets d. code for amino acids e. are three-base sequences of tRNA