________ dyes have a negative charge on the chromophore and are repelled by bacterial cells.
Fill in the blank(s) with the appropriate word(s).
Acidic; Acid
You might also like to view...
During the S period of interphase
(a) cell growth takes place. (b) nothing occurs because this is a resting period. (c) chromosomes divide. (d) synthesis (or replication) of the nucleoproteins takes place.
Which of the following is true about the relationship between plectonemic and solenoidal supercoils?
A. Plectonemic supercoils are stabilized by proteins, whereas solenoidal supercoils are not. B. The formation of plectonemic versus solenoidal supercoils is sequence specific. C. Plectonemic supercoils are always left-handed and solenoidal supercoils are always right-handed. D. In underwound DNA, plectonemic supercoils are all right-handed and solenoidal supercoils are all left-handed. E. Plectonemic supercoils compact the DNA to a greater extent than solenoidal supercoils.
What two enzymes do DNA researchers need
to cut and paste DNA from different sources?
a. restriction and ligases b. restriction and polymerases c. ligases and polymerases d. restriction and helicases e. helicases and polymerases
Set of chemicals that can keep the pH of a solution stable by alternately donating and accepting ions that contribute to pH is called a(n) _____
1.acid 2.base 3.buffer system 4.solution