The cardiac, pyloric, anal, and ileocecal sphincters are all part of the
a. digestive tract.
b. respiratory tract.
c. circulatory system.
d. muscular system.
b
You might also like to view...
What is the best definition of biotransformation?
A. Production of alcohol from a substrate B. Oxidation of sugar to carbon dioxide C. Use of microorganisms to modify substances not normally used for growth D. Production of a toxin from a nontoxic chemical
During meiosis I, when does homologous chromosome pairing and recombination occur?
A) prophase I B) pro-metaphase I C) metaphase I D) anaphase I E) telophase I
Biological nitrogen fixation is accomplished by symbiotic ________ living in mutualistic association with plants
Fill in the blank(s) with correct word
The outermost layer of a virion fulfills which of the following functions of the virus?
A) protection B) recognition C) replication D) both protection and recognition E) both recognition and replication