Answer the following questions true (T) or false (F)
1. Chemical reactions involve only the outermost electrons of an atom.
2. Ionic bonds occur through a sharing of electrons.
3. Acids release hydrogen ions into aqueous solutions.
1. TRUE
2. FALSE
3. TRUE
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Sperm cells are indicated by the letter ____
a. A b. B c. C d. D e. E
Streptococcus pyogenes commonly causes streptococcal toxic shock syndrome in otherwise healthy people
Indicate whether the statement is true or false
Which of the following is mismatched?
A) hydatid disease — humans are the definitive host B) Taenia infestation — humans are the definitive host C) trichinellosis — humans eat larva of parasite D) pinworm infestation — humans ingest parasite's eggs E) hookworm infestation — parasite bores through skin
An epidemiologist is investigating a new disease and observes what appear to be bacteria inside tissue cells in clinical samples from victims. The scientist wants to try to isolate the bacteria in the lab. What culture conditions are most likely to be successful?
A. culturing on blood agar plates B. inoculation of EMB plates C. incubation in an anaerobic culture system D. inoculation of cell cultures E. inoculation of a minimal medium broth