What is the correct sequence for DNA replication in E. coli?
A. initiation, termination, elongation
B. elongation, termination, initiation
C. elongation, initiation, termination
D. initiation, elongation, termination
Answer: D
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An example of an animal with paired nerve cords that connect to a simple brain is a ____
a. starfish b. jellyfish c. grasshopper
d. sea urchin e. planarian
In the Voges-Proskauer test, reagent A is
A. Sulfanilic acid B. Kovac's Reagent C. Alpha-Napthol and KOH D. Creatine E. Alpha-Naphthylamine
Why are Gram-negative bacteria more resistant than Gram-positive bacteria to damage by certain chemical agents like lysozyme?
A) Gram-negative bacteria contain peptidoglycan in their cell wall. B) Gram-negative bacteria have a thicker layer of peptidoglycan in their cell wall. C) Gram-negative bacteria lack a cell wall. D) Gram-negative bacteria have an outer membrane as part of their cell wall. E) Gram-negative bacteria have porins.
All of the following are correct about salmonelloses except
A. non-typhoidal strains of salmonella are zoonotic in origin. B. foods contaminated by rodent feces may cause outbreaks.. C. outbreaks have been caused by eggs. D. drug resistance of salmonella is on the rise. E. strains are normal flora in dogs and cats.