A notorious biofilm former implicated in cystic fibrosis is
A) Bacillus subtilis.
B) Escherichia coli.
C) Lactobacillus acidophilus.
D) Pseudomonas aeruginosa.
Answer: D
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What is responsible for the large surge of progesterone in the menstrual cycle?
a. the maturation of the follicle b. the surge in estrogen c. the surge in LH d. the release of the egg e. the formation of the corpus luteum
Which of the following is NOT involved in
nitrogen fixation? a. breaking triple bonds b. production of ammonia c. production of NO3 ? d. production of NH4 + e. All of these are involved in nitrogen fixation
A number of mechanisms operate to maintain genetic diversity in a population. Why is such diversity favored?
A) Greater genetic diversity increases the chances of haploidy. B) Genetic diversity helps populations avoid diploidy. C) Genetic diversity may better adapt a population to inevitable changes in the environment. D) Diversity leads to inbreeding advantages. E) Homozygosity is an evolutionary advantage.
The body of a tapeworm consists of segments, each of which is called a(n) proglottid
____________________ Indicate whether the statement is true or false.