Ammonia, which is a byproduct of protein metabolism, is converted to __________ primarily in the __________.
a. ketones? liver
b. ketones? kidney
c. urea? kidney
d. urea? liver
d. urea? liver
Ammonia produced during protein metabolism is converted into urea in the liver.
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Non-enveloped and enveloped viruses both may enter the host via endocytosis
Indicate whether this statement is true or false.
Which habitat is most likely to be rich in fossils?
a. eroding hillsides b. deserts c. polar ice caps d. bed of former shallow sea e. rocky plateau
Cilia and flagella are most similar in
a. length. b. the kinds of cells that have them. c. the number that cells usually have. d. their internal composition and structure. e. their location along the cell’s periphery.
Which types of blood cells are responsible for transporting oxygen?
A. leukocytes B. thrombocytes C. plasma D. red blood cells E. platelets