What characteristic do mycoplasmas (Bacteria) and Thermoplasma and Ferroplasma (Archaea) have in common?
A) contain plasmids
B) hyperthermophilic
C) lack cell walls
D) relatively large genomes from duplicated genes
Answer: C
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Mosses have stems, roots, and leaves
____________________ Indicate whether the statement is true or false.
An island is on the migration route of sea birds. This island also has abundant tree-nesting birds that live on the island permanently and are not found on any other island. The two bird species do not interbreed. The tree-nesting birds are more likely than the sea birds to be in Hardy-Weinberg equilibrium because:
A. natural selection is stronger in the tree-nesting birds. B. there are fewer mutations in the sea birds. C. of high immigration and emigration in the sea bird population. D. the sea bird population is larger. E. mating is random in the tree-nesting birds.
An unprotected species resembling others that are distasteful is an example of which type of mimicry?
A. Batesian B. Aposematic C. Competitive D. Müllerian
Which of the following is normal oral and nasopharyngeal flora but is involved in infective endocarditis in adults who have underlying congenital or rheumatic heart disease?
A. Haemophilus influenzae B. Haemophilus aphrophilus C. Haemophilus aegyptius D. Haemophilus ducreyi E. All of the choices are correct