This bacterium secretes an exotoxin that binds to nerve cells and causes muscle paralysis.
A. Clostridium botulinum
B. Shigella
C. Escherichia coli
D. Cholera
E. Penicillium
Answer: A
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A cancer that develops in muscle is
a. malignant melanoma. b. oat cell carcinoma. c. giant cell carcinoma. d. rhabdomyosarcoma. e. Wilm's tumor.
Three (3) eggs are boiled and all weigh 2g. The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes.
McGraw-Hill EducationThe solution in the container is hypertonic to which egg?
A. Egg 1 B. Egg 2 C. Egg 3
The enzyme formate dehydrogenase (FDH) splits formic acid to H2 and CO2 and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell, the internal pH would become far too ________ to support viability.
A. alkaline B. acidic C. hypertonic D. hypotonic
Which of the following is a notable symptom of giardiasis?
A) "rice-water" stools B) irritability and sleep disturbance C) jaundice D) foul-smelling "rotten egg" stools E) dysentery