Which of the following is mismatched?
A) CO2 + 4H2 ? CH4 + 2H2O — Methane-producing bacteria
B) 2 NO2- + O2? 2 NO3 — Nitrobacter
C) 6CO2 + 6H2O ? C6H12O6 + 6O2 — Clostridium
D) N2 + 6H+ ? 2NH3 — Beijerinckia
E) SO42- + 10H+ ? H2S + 4H2O — Desulfovibrio
C
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DNA or protein can be used as a "molecular clock" that tells how long it has been since two species have diverged from a common ancestor.
Answer the following statement true (T) or false (F)
Which of the following organisms would be most likely to contaminate a jar of pickles?
A) a neutrophile B) a thermophile C) an acidophile D) an obligate anaerobe E) a mesophile
For individuals planning a trip to another country, such as Vietnam, which organization is the best source for information on which vaccines might be necessary?
a. Centers for Disease Control and Prevention b. National Institutes of Health c. National Safety Council d. Tourist Travel Bureau
Match the letter of each example from childbirth to the appropriate component of a positive feedback loop.A. Pituitary gland secretes oxytocin, which acts on the uterusB. Uterine contractions increaseC. Fetus is pushed against uterine openingD. Receptors detect stretchE. Brain receives and compares stretch informationStimulus
What will be an ideal response?