Giardia's mitosome can be said to be "doubly degenerate," because it is a degenerate type of ________, an organelle that is itself a degenerate form of ________
A) nucleus; archaean
B) nucleus; bacterium
C) mitochondria; proteobacterium
D) mitochondria; spirochete
C
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An allele for a particular trait that is only expressed in the presence of a second copy of the same allele is called
A. dominant. B. codominant. C. incompletely dominant. D. recessive. E. pleiotropic.
Helicobacter pylori is, in part, able to survive in the stomach by its ability to produce
A. lactic acid from sugar. B. fatty acids from sebum. C. neutralizing proteins from glucans. D. ammonia from urea.
Saliva contains the hydrolytic enzyme, salivary amylase, which initiates the breakdown of the polysaccharide _________ into the disaccharide, maltose.
A. sucrose B. starch C. glucose D. fructose E. cellulose
Trophic pyramids typically have a ____ base and a ____ top portion
a. narrow; narrow b. narrow; wide c. wide; narrow d. wide; wide e. flat; flat