Electron bifurcation is a useful way for organisms to circumvent the need for ATP hydrolysis and/or a proton motive force because it tightly couples reactions that are thermodynamically unfavorable with those that occur spontaneously, providing an excess of energy to drive the former.
Answer the following statement true (T) or false (F)
True
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In all cases, it is necessary for disease-causing microorganisms to grow in a food to result in disease transmission to humans.
Answer the following statement true (T) or false (F)
You have discovered a strain of E. coli that grows very slowly—the generation time is nearly 12 hours compared to the normal 20-30 minutes. Upon further investigation, you find a mutation in the DNA polymerase III gene
What subunit of the holoenzyme does this mutation affect the most? A. ? B. ? C. ? D. ?
During menstruation, cells in the uterine lining secrete ____, which initiates contractions of the uterus
a. prostaglandins b. the corpus luteum c. estrogen d. progesterone e. follicle stimulating hormone
Which of the following phenomena will be observed if a cell's membrane is pierced?
(a) the membrane reseals (b) the membrane collapses (c) a tear is formed (d) the membrane expands