Glutamate (glutamic acid), is the only one of which that contain an acidic functional group (carboxylic acid). Arginine is basic while proline and glycine considered non-polar.

Phospholipids have two fatty acid tails made of hydrocarbons, which are nonpolar, and a phosphate head, which is polar. Their structure allows phospholipids to group up into a bilayer such that the polar heads face the outside environment while the non-polar fatty tails face inward, protected from the aqueous environment. Phospholipids are not completely polar or non-polar, they are amphiphathic.

Cellulose is a polysaccharide (a sugar). Glucose is the monosaccharide used to generate the structure of cellulose via  linkages. Cellulose is composed of several hundred glucose molecules bound in this chain. Due to the nature of the beta linkage, humans cannot digest cellulose.

Chymostrypsin creates smaller peptide segments, so it is not a ligase or transferase. Since it employs the use of a water molecule in order to cleave the polymer, it is classified as a hydrolase enzyme. Lyases also shorten polymers, but not with the use of a water molecule.

We are told that the inhibitor binds noncovalently, so suicide inhibitors are not an option. Since the inhibitor only affects the catalytic rate of the enzyme, and not the Michaelis constant, we can say that the inhibitor is following a mechanism such as that of a noncompeitive inhibitor.

Young's Modulus is equal to the stress over strain on an object. The stress on an object refers to the pressure that is put on an object, and can be given the below equation.

The strain on an object refers to the amount an object is deformed in the direction of the force. It can be given the below equation, where  is the change in length and  is the original length.

Combining these two equations we can determine Young's Modulus.

To find the right answer, we need to know two formulas:

The simplest way to compare these choices will be to convert them all to Kelvin.

This makes our answer .

In this question, you will have to use the given equation twice; once for melting point and once for boiling point. Let’s first convert the melting point to Fahrenheit. The question states that the melting point of water is . Plugging this into the equation gives:

The melting point of water is . Similarly, we convert the boiling point of water to Fahrenheit:

The boiling point is . The difference between boiling point and melting point in Fahrenheit is:

Kelvin is a temperature scale that is named after Lord Kelvin. Lord Kelvin, through his experiments, found that absolute zero  occurs at a temperature of . Later, scientists defined Kelvin as the fraction  of the temperature of water at its triple point (the point on a phase diagram at which water exists as a solid, a liquid, and a gas). This is because the temperature at the triple point of water, in Celsius, is . In Kelvin scale, the triple point of water occurs at .

The question states that the melting point of iron is . We can use the given equation to convert this to Celsius.

This means that the melting point of iron is . At this point you can choose the right answer because there is only one answer option that has ; however, let’s solve for Kelvin. The second equation you need to know is the conversion from Celsius to Kelvin:

The melting point of iron in Kelvin is: