Streptococcus pneumoniae is Select one: a. alpha-hemolytic on blood agar. b. found in up to 50% of people as normal biota. c. a gram-positive diplococcus with a capsule. d. a pathogen with endotoxin. e. All of the choices are correct.

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.