What characteristic does Vibrio share with Salmonella?
A) Both have O polysaccharide antigens.
B) Both are oxidase positive.
C) Both have polar flagella.
D) Both have similar shape.
E) Both are spread primarily by fecal contamination.
A
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Why is a false positive more significant in HIV testing of patients than in screening donated blood for transfusions?
A. It isn't-both are equally dangerous/significant. False-positives in PEOPLE can lead to psychological trauma, but false-positives in BLOOD could lead to the useful blood being disposed. B. A false-positive in a PERSON is easily retestable. This makes it more significant, because we would simply quickly retest the person to verify their actual HIV status. C. A false-positive in BLOOD is easily retestable. This makes it less significant, because we would simply quickly retest the blood to verify its actual HIV status. D. This statement is backwards-false-positives in blood testing are more significant. If the false-positive rate is high and we don't realize it, we're more likely to dispose useful blood. This could lead to acute shortages of blood for patients who need transfusions.
A disaccharide is composed of two monosaccharides joined by a(n) glycosidic linkage
__________________ Indicate whether the statement is true or false.
A cell that has acquired the capacity to grow suspended in solution is
A) infected with a virus. B) immortalized. C) apoptotic. D) anchorage-independent. E) density-dependent.
The plant organ that supports the plant body and carries nutrients between different parts of the plant is the
A. root B. stem C. leaf D. flower