Which archaeal genus is capable of growth in a pH of less than 0?
a. Halobacterium
b. Methanosarcina
c. Picrophilus
d. Thermoplasma
Answer: C
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What is the key concept addressed by the question?
What will be an ideal response?
Species richness refers specifically to the ____.
A. numbers of individuals of each species present. B. ability of larger animals to enrich themselves by successfully preying on smaller ones. C. number of different species in the habitat. D. feeding levels at which the animals are located. E. relative abundance of the species
Which receptor transduces when it changes shape and its plasma membrane becomes more permeable to sodium or potassium ions?
A) pain receptor B) thermoreceptor C) mechanoreceptor D) chemoreceptor
A common source of antibiotics is
A. Acetobacter. B. Aspergillus oryzae and Lactobacillus. C. Lactoccocus cremoris. D. Streptococcus thermophilus. E. Streptomyces.