Which genera are dissimilative sulfate-reducing bacteria?

a. Desulfuromonas and Achromatium
b. Thiobacillus and Beggiatoa
c. Wolinella and Sulfolobus
d. Desulfovibrio and Desulfobacter


Answer: D

Biology & Microbiology

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There is at least one known virus whose genome is actually larger than a cellular genome

Indicate whether the statement is true or false.

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Which of the following pairings is not correct?

A) adenylyl cyclase-ATP B) phospholipase C-diacylglycerol (DAG) C) phospholipase C-inositol triphosphate D) calmodulin-calcium ions

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To lower blood acidity,

a) hydrogen ions are excreted and bicarbonate ions are reabsorbed b) hydrogen ions are reabsorbed and bicarbonate ions are excreted c) hydrogen ions and bicarbonate ions are reabsorbed d) hydrogen ions and bicarbonate ions are excreted e) urea, uric acid, and ammonia are excreted

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Which of the following is a typical means of halting normal cell division?

A) the shortening of telomeres B) increasing the activity of p53 C) triggering apoptosis D) activating oncogenes

Biology & Microbiology