Chapter 3, Problem 1Q

Please answer the last 3 sub-parts (#20-22)

Q23: Dr. Alghe has just performed a restriction digest on DNA she extracted from her samples. She must now run her DNA out on a gel to separate the fragments based on size. To do this she must prepare a 1.1% agarose gel, where the percentage is determined as mass/vol. How many grams of agarose must she add to 413 mL of buffer in order to arrive at the correct percentage? (answer to 2 decimals) **Assume the dissolution of agarose will not alter the final volume of the solution**

The activity coefficient of aqueous glucose (C6H12O6) is ______. cannot be estimated from the given information slightly more than 1 slightly less than 1 much less than 1 0 exactly 1

Please provide exply

Is banana flavoring, isopentyl acetate, a nutrient?

Humans cannot digest wood; termites do so with the aid of bacteria in their digestive tract. Is there a basic difference in the digestive enzymes present in humans and termites?

1.In the mitochondria, enzymes attached to the membrane use the ______________ to produce a ____________ difference and thus an electrical potential. Making the transfer of _______________ possible a. pH, flow of electrons, hydrogens b. pH, electron flow, oxygen c. electron flow, pH, hydrogens d. Electron flow, pH, Oxygen   2.Which of the following sugars can be a substrate for hexokinase? a.glucose b.fructose c.mannose d.all these e.none of those

Saponification of fats needs a strong ______ to proceed to completion.  A. Halogen B. Catalyst C. Acid D. Base

What is E2-26 mean