A human fecal sample is examined and found to contain a few strobila. The person is probably infected with
A) Echinococcus granulosus.
B) Giardia intestinalis.
C) Taenia.
D) Schistosoma.
E) Necator americanus.
C
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These inside-out membrane vesicles will _____
A) become acidic inside the vesicles when NADH is added B) become alkaline inside the vesicles when NADH is added C) make ATP from ADP and i if transferred to a pH 4 buffered solution after incubation in a pH 7 buffered solution D) hydrolyze ATP to pump protons out of the interior of the vesicle to the exterior E) reverse electron flow to generate NADH from NAD+ in the absence of oxygen
If a male cat with orange fur produces female offspring with calico fur, what color was the mother cat?
A. orange B. black C. calico D. black or calico E. orange or calico
The ____________ is a disk-shaped cloud of icy bodies believed to extend from about 40 AU (the orbit of Pluto) out to 100 AU. It is believed that most short-period comets originate from this region
a. Oort cloud b. Widmanstätten cloud c. Apollo-Amor d. Kirkwood region e. Kuiper belt
Active transport occurs ________ the concentration gradient across a cell membrane.
A. against B. passively against C. toward D. away from E. in between