Which of the following organisms should be tested with cefinase to rule out its ability to produce beta-lactamse?
A) Micrococcus luteus
B) Streptococcus pyogenes
C) Moraxella catarrhalis
D) Staphylococcus aureus
Ans: C) Moraxella catarrhalis
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Not all coliforms are pathogenic
Indicate whether the statement is true or false.
What happens during gastrulation?
A. Cells migrate to form a layered structure. B. A fertilized egg divides mitotically to form a ball of cells. C. A gastrula is transformed into a blastula. D. The embryo divides into distinct zones of cell division, cell expansion, and cell differentiation. E. All of these events happen during gastrulation.
The main symptom of gastroesophageal reflux disease is ____
a. diarrhea b. constipation c. hepatitis d. intestinal pain e. heart burn
A map of a chromosome that includes the positions of genes relative to visible chromosomal features, such as stained bands, is called a
A) linkage map. B) physical map. C) recombination map. D) cytogenetic map. E) banded map.