Humans become infected with Fasciola by
A) ingesting cysts on vegetation.
B) consuming cysticerci in contaminated meat.
C) ingesting water contaminated with eggs.
D) the penetration of cercariae through the skin.
E) the bite of infected mosquitoes.
A
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A(n) ________ is like an underwater geyser where hot mineral-rich water streams out of an opening in the rocky bottom
a. meteorite b. volcano c. atoll d. hydrothermal vent e. crevice
What is represented by the part of the figure labeled as “B”?
a. normal tissue b. cancerous tissue c. adipose tissue d. lymph nodes e. red blood cells
Indicate the scenario(s) that could directly result in sympatric speciation. Check all that apply.A) Two sunflower species cross to form a healthy hybrid individual with equal copies of chromosomes from each parental species.B) A new river channel divides a population of beetles into two populations.C) A large fence blocks the intermingling of two populations of a species.D) A subset of flies within a larger population colonizes a new host plant.
What will be an ideal response?
Experiment 1 in Figure Q8-21 is the positive control, demonstrating that the region of DNA upstream of the gene for GFP results in a pattern of expression that we normally find for the LKP1 gene. Experiment 2 shows what happens when the sites for binding factors X, Y, and Z are removed. Which experiment above demonstrates that factor X alone is sufficient for expression of LPK1 in the kidney?
(a) experiment 3 (b) experiment 5 (c) experiment 6 (d) experiment 7