All of the following are true regarding ammonia
EXCEPT that
a. it is toxic to cells.
b. it is a normal product of amino acid breakdown.
c. the liver detoxifies it.
d. the liver converts it to urea.
e. it is expelled by the respiratory system.
Answer: e
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Viruses always lack which of the following?
A. organelles B. an envelope C. a protein coat D. genetic material E. None of the answer choices is correct.
List the four types of gymnosperms. What characteristics do they have in common? What sets each group apart?
What will be an ideal response?
The enzyme that modifies the mannose group on lysosomal proteins recognizes and binds to a(n)
a. helix. b. signal sequence. c. signal patch. d. KDEL sequence.
Inorganic nitrogen must be converted to ammonia to be used by a cell.
Answer the following statement true (T) or false (F)