Indicate if the lines in question invoke operator overloading. class Matrix; int main() { Matrix zero(4, 4, 0); [construct] Matrix eye = Matrix::Identity(4); Matrix myMatrix = zero + eye * 4; [matrix] vector myVector(5); int x = 0, y = 2; x = 4 + y; [int] myVector[ 3 ] = x; [vector] }

Match the words highlighted in red in the two paragraphs below to the correct terms. Not all terms will be used.  ATCase is an allosteric enzyme that catalyzes the first step of pyrimidine formation. This first step involves the transfer of carbamoyl phosphate to the substrate, __________, to form “product A”. “Product A” goes on to form (after several additional steps) a pyrimidine-based nucleoside triphosphate such as CTP. Early studies showed that the rate of formation of “product A” decreased as the concentration of the final product, CTP, increased. This is an example of ___________, a mechanism that prevents a pyrimidine surplus. In this scenario, CTP is acting as a ___________ effector of ATCase. At the same time, adenosine triphosphate (ATP), an end product of the parallel purine biosynthetic pathway, can act to ____________  ATCase activity. ATP is acting as a _____________ effector of ATCase. Ultimately, the interplay between CTP, ATP, and ATCase ensures an appropriate balance of purines and pyrimidines within the cell.  ATCase is a textbook example of a molecule under allosteric regulation. The initial binding of one or more substrates to one active site in the enzyme results in conformational changes that increase the likelihood that the enzyme will bind more substrate. Furthermore, binding of ATP to an allosteric site of the enzyme also increases the likelihood that the enzyme will bind more substrate. The conformational change of ATCase that occurs following the binding of either substrate or ATP that results in even more substrate binding is an example of a phenomenon called ______________. For this phenomenon to be possible, ATCase must consist of ____________ subunit(s). As the substrate (or ATP) bind to ATCase, more of the enzyme transitions from the ____________ state to the ____________ state. The R (“relaxed”) state is a ____________ state, while the T (“tense”) state is a _____________ state. These states coexist within a dynamic equilibrium that is sensitive to substrate availability and allosteric regulation. 

A 95 N force exerted at the end of a 0.50 m long torque wrench gives rise to a torque of 15 Nm. What is the angle (assumed to be less than 90o) between the wrench handle and the direction of the applied force? This is a numerical problem. Only enter the numerical answer with the correct number of significant figures.

Which of the following lists the correct order of sedimentation process from beginning to end?

What type of metamorphic rock will shale normally become following low-grade metamorphism?

Two tiny objects with equal charges of 1 μC are placed at (0, 0) and (1.0 , 0). Suppose that a small test charge is placed so that it lies at (0.5,1.0).  What is the electric field, in x 104 N/C, experienced by the test charge?

In the circuit shown, the current I = 0.5A, with a direction indicated by the arrow. The ideal battery labeled ε has voltage 5.0 V. What is the resistance of the resistor R, in ohms?

As shown in the figure, a battery with internal resistance r has initially no load connected across its terminals. Then the switches S1 and S2 are closed successively. The ammeter connected to the 6Ω resistor reads 1.875 A when S1 is closed, then 1.667 A when both S1 and S2 is closed. What is the internal resistance of the battery, in ohms, to two significant figures?

Match the following pictures to the correct position name. 

A precipitate is formed when a dilute aqueous calcium acetate is mixed with a lithium sulfate solution.  What are the products of the reaction?