Which of the following is diagnostic for Neisseria meningitidis?
A) the presence of Gram-negative diplococci in CSF phagocytes
B) a catalase positive reaction
C) the presence of lipid A
D) the lack of lipooligosaccharide
E) the presence of white blood cells in the CSF
A
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Identify the correct steps and the correct order for cloning a gene of interest
1. Transform the bacteria. 2. Mix the postrestriction endonuclease gene of interest with the postrestriction endonuclease cloning plasmid. 3. Incubate the combined DNA fragments with the liagase enzyme. 4. Use restriction endonucleases to cut the gene of interest and the target DNA. 5. Spread bacteria on medium containing lactose and ampicillin. 6. Spread bacteria on medium containing X-gal and ampicillin.
a. 4, 2, 3, 1, 6 b. 4, 3, 2, 1, 5 c. 4, 3, 2, 1, 6 d. 4, 2, 3, 1, 5 e. 2, 4, 1, 5, 3
Which of the following conditions is not known to be a cause of kidney failure?
a. exposure to lead, arsenic, or pesticides b. complications of diabetes c. high blood pressure d. fever from influenza
Were similar amounts of all classes of biochemical detected in each sample?
a. Yes b. No
Protein kinase A regulates glycogen metabolism by phosphorylating glycogen synthase and
a. phosphorylase kinase. b. glycogen phosphatase. c. glycogen phosphorylase. d. glucokinase.