Exam 5: The Structure and Function of Large Biological Molecules

Normal hemoglobin is a tetramer,consisting of two molecules of β hemoglobin and two molecules of α hemoglobin.In sickle-cell disease,as a result of a single amino acid change,the mutant hemoglobin tetramers associate with each other and assemble into large fibres.Based on this information alone,we can conclude that sickle-cell hemoglobin exhibits

If ¹⁴C-labelled uridine triphosphate is added to the growth medium of cells,what macromolecules will be labelled?

Which bonds are created during the formation of the primary structure of a protein?

A molecule with the chemical formula C₆H₁₂O₆ is probably a

The following questions are based on the 15 molecules illustrated in the figure below.Each molecule may be used once,more than once,or not at all. -Which molecule is a saturated fatty acid?

The amino acids of the protein keratin are arranged predominantly in an α helix.This secondary structure is stabilized by

Which of the following is the best explanation for why vegetable oil is a liquid at room temperature while animal fats are solid?

Why are both cooking oil and gasoline (a hydrocarbon)considered hydrophobic molecules?

What is the structural feature that allows DNA to replicate?

What methods may be used to elucidate the structures of purified proteins?

Which of the following are nitrogenous bases of the pyrimidine type?

If a DNA sample were composed of 10% thymine,what would be the percentage of guanine?

Use the following figure to answer the questions below. -Which of the following descriptors is true of the molecule shown in the above figure?

The following questions are based on the 15 molecules illustrated in the figure below.Each molecule may be used once,more than once,or not at all. -A fat (or triacylglycerol)would be formed as a result of a dehydration reaction between

The following questions are based on the 15 molecules illustrated in the figure below.Each molecule may be used once,more than once,or not at all. -Which of the following statements is false?

Which of the following polymers contain nitrogen?

At which level of protein structure are interactions between the side chains (R groups)most important?

Polysaccharides,triacylglycerides,and proteins are similar in that they

Lactose,a sugar in milk,is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule.How is lactose classified?

One of the primary functions of RNA molecules is to