The sugar and phosphate portion of the nucleotides are found on the dna twisted ladder.

a. as the rungs
b. as segments of the rails
c. as conditions between the steps and the rails
d. none of the above

B. as segments of the rails

Explanation:

If we look at what makes the backbone of a DNA strand,we will see that it is made up of alternating phosphate and sugar. The sugar that is found in the DNA ( 2-deoxyribose) , also known as a pentose five-carbon sugar joins with the phosphate portion as segments of the rails to form a phosphodiester bonds between the third and fifth carbon atoms of adjacent sugar rings.

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answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation: