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.
Answer: C
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In a cell with a diploid number of 12, how many chromatids are present at prophase of mitosis?
A) 6 B) 12 C) 24 D) 48 E) none of the above
Long-term exposure to cold can alter metabolism and
encourage __________ in which brown adipose tissue produces heat. Fill in the blank(s) with the appropriate word(s).
Which of the following is an opportunistic pathogen commonly present in the nasal cavity as a member of the microbiota?
A) Staphylococcus aureus B) Bordetella pertussis C) Legionella pneumophilia D) Pneumocystis jiroveci E) Veillonella species