Early one morning in a microbiology class, a student examining his cheek scraping slide with a light microscope, spots an unusual bunch of cells mixed in with the large nucleated cells from his cheek. His instructor takes a look and informs him that they are bacteria. Would those be prokaryotic or eukaryotic cells?
a. both
b. neither
c. prokaryotic
d. eukaryotic
c. prokaryotic
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Answer the following statements true (T) or false (F)
1. The nervous system of a cnidarian consists of a central ganglion leading into a nerve net. 2. The two body forms of some radiates is an example of alternation of generations. 3. Although a medusa and a polyp look different, they have similar body plans. 4. All Platyhelminthes are parasitic.
The growth hormone is called
a. prolactin. b. adrenalin. c. thyroxine. d. ACTH. e. somatotropin.
Which of the following statements about whisk ferns is FALSE?
a. They exhibit dichotomous branching. b. They lack true roots. c. They lack true leaves. d. A representative is Psilotum. e. They lack true stems.
Necrotizing fasciitis is:
A. also called impetigo. B. possibly caused by antibodies to Group A streptococci that cross-react with body tissues. C. associated with strains of Streptococcus pyogenes producing destructive enzymes and toxins. D. typically a sequelae of streptococcal pharyngitis. E. not treatable with antimicrobic drugs.