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

Biology & Microbiology

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Genetically modified crops have been banned in the United States

a. True b. False

Biology & Microbiology

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

Biology & Microbiology

How are the extending forelimbs and hind limbs alike?

What will be an ideal response?

Biology & Microbiology

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

Biology & Microbiology