Mastering Biology Chp 4 and 5 quiz

1. Which of the following pairs of base sequences could form a short stretch of a normal double helix of DNA?

· 5´-ATGC-3´ with 5´-GCAT-3´

Which chemical group is most likely to be responsible for an organic molecule behaving as a base?

Amino

Visualize the structural formula of each of the following hydrocarbons. Which hydrocarbon has a double bond in its carbon skeleton?

C2H4

1. The molecular formula for glucose is C6H12O6. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration reactions?

C60H102O51

1. Which of the following categories includes all others in the list?

Carbohydrate includes all sugars

The structural level of a protein least affected by a disruption in hydrogen bonding is the

Primary Level

1. Enzymes that break down DNA catalyze the hydrolysis of the covalent bonds that join nucleotides together. What would happen to DNA molecules treated with these enzymes?

The phosphodiester linkages of the polynucleotide backbone would be broken

1. Which of the following statements concerning unsaturated fats is true?

They have double bonds in the carbon chains of their fatty acids.

1. The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are in the α form. Which of the following could amylase break down?

glycogen, starch, and amylopectin

1. Organic chemistry is currently defined as

the study of carbon compounds

Which functional group is not present in this molecule?

sulfhydryl