Which process in the human digestive system best illustrates mechanical digestion?
a. absorption
b. amylase
c. bacterial action in the large intestine
d. chewing
e. pepsin
D
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Which of the following must be present for a cell to enter mitosis?
a. favorable environment b. high enough cell mass c. growth factor d. all of these
Which structure is involved in the initiation stage?
a. a specific tRNA b. an mRNA transcript c. a small ribosomal subunit d. a large ribosomal subunit e. all of these
All EXCEPT which of these features of Giardia
lamblia is correct? a. parabasalid b. lack mitochondria c. common intestinal parasite of mammals d. anaerobic e. forms cysts that survive in water contaminated with feces
Which is associated with the inability to produce factor VIII in the blood?
A. hemophilia A B. Duchenne muscular dystrophy C. Williams syndrome D. trisomy 21 E. color blindness