Which microorganism species is most well-adapted to life on the skin?
A. Malassezia
B. Staphylococcus epidermidis
C. Streptococcus pyogenes
D. Corynebacterium diphtheriae
E. Candida albicans
Answer: B
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Which of the following is a common benefit of a microbe-plant symbiosis?
A) increased nutrient availability B) decreased pathogen colonization C) increased affinity for carbon dioxide D) increased nutrient availability and decreased pathogen colonization
What conclusions can be drawn from the studies on bent grass in a copper-polluted field and the
neighboring population in a non-polluted field?
a. Flowers in the polluted field will not survive. b. The one population now requires copper to survive. c. They have different flowering schedules, so isolation may be developing. d. They have different types of gametes, so isolation has taken place. e. They show no differences.
If you start with 3 double-stranded DNA fragments, after 4 cycles of PCR you will have ________ fragments.
A. 48 B. 24 C. 27 D. 12 E. 81
In the carbon cycle, one of the ways in which carbon is returned to the atmosphere is by respiration
____________________ Indicate whether the statement is true or false.