Which of the following diseases could be prevented with proper sewage disposal and water purification?
A) Lyme disease
B) Leptospirosis
C) Vibrio parahaemolyticus gastroenteritis
D) Vibrio vulnificus gastroenteritis
E) Cholera
E) Cholera
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The cells that make up muscle tissue are called _________
a. macrophages b. simple squamous epithelium c. red blood cells d. myocytes
What is the expected proportion of offspring with sickle-cell anemia if both partners are heterozygous for the sickle-cell anemia gene?
What will be an ideal response?
How could we build a microscope with a higher resolution?
a) Use electromagnetic waves with shorter wave lengths than visible light and use a sensor to produce a picture b) We could drag a tiny needle over the surface of our sample and record the position of the needle to record the surface structure c) Electrons have also wave-like properties; we can use magnets instead of lenses and bombard the sample with electrons instead of light d) All of these answers are good ideas for a high-resolution microscope
You have been studying the relationship between jackals and tigers in India. Until recently, the only relationship you have observed is that jackals will associate themselves with a particular tiger and follow it at a safe distance in order to feed on the big cat's kills. However, recently you observed a jackal alerting a tiger to a potential kill with a loud cry. If you continue to observe this alerting behavior, you might change the categorization of the jackal/tiger relationship from ________ to ________.
A. mutualism; parasitism B. competition; predation C. mutualism; commensalism D. parasitism; mutualism E. commensalism; mutualism