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
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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.
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
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
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