Which of the following parasites must be swallowed twice by the human host, first as an egg and later as a larva?
A. Schistosoma mansoni
B. Taenia saginata
C. Enterobius vermicularis
D. Necatur americanus
E. Ascaris lumbricoides
Answer: E
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Which of the following is a Wnt pathway membrane protein?
A. Wnt B. Dsh C. frizzled D. Hedgehog
Polyploidy refers to ____ and occurs most often in ____
a. an individual getting one or more additional sets of chromosomes; plants b. an individual getting one or more additional sets of chromosomes; animals c. an individual lacking one or more sets of chromosomes; plants d. an individual lacking one or more sets of chromosomes; animals e. an individual lacking one or more sets of chromosomes and receiving additional sets of other chromosomes; animals
With ____ selection(s), the allele frequency
will shift in a consistent direction.
a. directional b. stabilizing c. disruptive d. frequent e. mutational
A(n) ____________________ is the area of a dividing cell’s membrane where microfilaments pull the membrane
inward. Fill in the blank(s) with the appropriate word(s).