Obligate anaerobes can often use ________ electropositive redox couples than facultative anaerobes, and ________ metabolism is most common in this group as well
A) lower / assimilative
B) lower / dissimilative
C) higher / assimilative
D) higher / dissimilative
Answer: A
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A land developer and several ecologists are discussing how a parcel of private land should be developed while saving twenty hectares as natural habitat
The land developer suggests that the twenty hectares be divided into twenty separate one-hectare areas. The ecologists suggest that it would be better to have one intact parcel of twenty hectares. What is the significance of these different arrangements of the twenty hectares? A) There really is no difference; they should both work equally well. B) The isolated hectare plots increase the ability of individuals to disperse from one habitat to another. C) The isolated plots are more vulnerable to edge effects. D) The large plot will create more inbreeding in many species.
Which type of blood cell is produced from lymphoid stem cells?
a. basophils b. B lymphocytes c. eosinophils d. erythrocytes e. neutrophils
In the spiral staircase model of DNA, the rungs
are a. deoxyribose sugars. b. hydrogen bonds. c. nucleotide base pairs. d. phosphate groups. e. composed of all of these
Stomach emptying is controlled by the secretion of ____
a. gastrin b. CCK c. epinephrine d. HCl e. ghrelin