After the primary stain has been added but before the decolorizer has been used, gram-positive organisms are stained ________ and gram-negative organisms are stained ________.
A. purple; colorless
B. purple; purple
C. purple; pink
D. pink; pink
Answer: B
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Measuring its costs and benefits in terms of energy spent and/or gained, which interaction(s) involve at least one individual gaining? Select all that apply
A. competition B. predation C. obligate mutalism D. facultative mutalism E. commensalism
Which of the following is NOT photoautotrophic?
a. Cyanobacteria b. Green sulfur bacteria c. purple sulfur bacteria d. purple non-sulfur bacteria e. Cyanobacteria and purple sulfur bacteria
Which group of tiny marine organisms have the simplest body and smallest genome of all modern animals?
a. sponges b. choanoflagellates c. placozoans d. cnidarians e. flatworms
Which of the following represent(s) the way(s) in which enveloped viruses acquire their envelopes?
A. Budding through the plasma membrane. B. Some viruses bud through the plasma membrane while other bud through internal cellular membranes. C. Budding through internal cellular membranes. D. Viral enzymes are responsible for production of the envelope.