Which is the correct order for the application of reagents in the Gram stain?
A. Crystal violet, alcohol/acetone, iodine, safranin
B. Iodine, safranin, crystal violet, alcohol/acetone
C. Crystal violet, safranin, iodine, alcohol/acetone
D. Safranin, crystal violet, alcohol/acetone, iodine
E. Crystal violet, iodine, alcohol/acetone, safranin
Answer: E
You might also like to view...
The second meiotic division of meiosis is important because
a. it returns the chromosome number to diploid before fertilization. b. it allows for crossing over and random distribution of chromosomes. c. it reduces cell size by dividing the cytoplasm in half. d. without this division, chromosome copies would double at each fertilization. e. fertilization requires this step.
How are dry fruits different than fleshy fruits? How might these differences affect the way that their seeds are dispersed?
What will be an ideal response?
Dolphins (which are mammals) and sharks (which are fish) have stiff dorsal fins projecting from their backs that help them maneuver through water. These relationships of structures to each other are best described as
A) vestigial structures. B) homologous structures. C) mutations. D) analogous structures.
In the early part of the twentieth century, Nilsson-Ehle and others described experiments showing that multiple loci may be involved in the inheritance of certain traits. Such patterns are often called ________
A) continuous traits B) polygenic traits C) indeterminate traits D) threshold traits