What term is used to indicate a relatively new characteristic, in an evolutionary sense?
a. homologous trait
b. analogous trait
c. cladistic trait
d. ancestral trait
e. derived trait
E
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Suppose a marine microbiologist wanted to assess the microbial community in a milliliter of sea water. Which of the following technique(s) may be useful to help them enumerate a specific genus or type of microbe?
A. Most probable number (MPN) technique B. DAPI nucleic acid stain C. Catalyzed reported deposition-FISH (CARD-FISH) D. Fluorescence activated cell sorting (FACS)
Which lineage of Echinoderms is made up of about 1500 species of sea stars, each with a central disk surrounded by 5 to 20 "arms"?
a. Ophiuroidea b. Asteroidea c. Crinoidea d. Echinoidea
The cytoplasmic (plasma) membrane of bacteria:
a) retains the cytoplasm and its contents b) acts as a selectively permeable barrier, allowing some molecules to pass while preventing the movement of others c) is the major site of ATP synthesis (respiration) in aerobes d) all of the above
Although penicillin inhibits peptidoglycan synthesis, bacterial cells will continue to grow normally in the presence of penicillin in a(n) ________ environment.
A. nonpolar B. hypotonic C. hypertonic D. isotonic