Which of the following bacteria was carried by Typhoid Mary in the 1900s?
A) Klebsiella pneumoniae
B) Pseudomonas aeruginosa
C) Salmonella typhi
D) Staphylococcus aureus
E) Escherichia coli
Ans: C) Salmonella typhi
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Genetically modified crops have been banned in the United States
a. True b. False
The water vascular system of the sea star ________
a. is based on ampullae inside each of the tube feet, which contract to lengthen the foot for locomotion b. is a simple digestive system that expels coarse, undigested residues through the mouth c. is an open circulatory system d. flushes millions of eggs from the gonad
How are the extending forelimbs and hind limbs alike?
What will be an ideal response?
In a group of 500 people, the frequency of genotype NN is 40%. Assuming both autosomal inheritance and that the population is in Hardy-Weinberg equilibrium, how many individuals would you expect to have the MN genotype?
A) 68 B) 232 C) 300 D) 200 E) 258