How do terrestrial animals prevent toxic accumulation of ammonia in their tissues?
a. They use ammonia in other metabolic processes.
b. They convert ammonia to less toxic forms.
c. They vent ammonia across the body wall.
d. They eliminate ammonia rather than excreting it.
e. Animals do not produce ammonia
b
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Bifidobacterium bifidum is a major pathogen in breast-fed babies.
Answer the following statement true (T) or false (F)
The process of breaking glycogen down to glucose is an example of: ____.
A. anabolism B. dehydration C. catabolism D. catalysis E. metabolism
If DNA of a particular species was analyzed and it was found that it contains 27 percent of adenine (A), what would be the percentage of cytosine (C)?
a. 27 percent b. 30 percent c. 23 percent d. 54 percent
Alexander Fleming discovered the compound penicillin in 1928 after his observations on the antibacterial effects of the mold Penicillium chrysogenum on which of the following microbes?
A) Staphylococcus aureus B) Escherichia coli C) Saccharomyces cerevisiae D) Salmonella enterica