Exam 3: Bioenergetics, Enzymes and Metabolism

Which choice below correctly rationalized whether this pair of reactions is coupled? A + B --> C + D ( $\Delta$ G = +5.4 kcal/mole) D + F --> G + H ( $\Delta$ G = -4.4 kcal/mole)

The hydrolysis of one glucose molecule has the potential to produce _______ ATP molecules in cells evolved to optimally catabolize it.

If an antibiotic were found to bind to a site on an essential bacterial enzyme other than the active site, what would its most likely mode of action be?

An enzyme which engages in an oxidation-reduction activity, transferring high energy electron and protons from a substrate onto a cofactor, is termed ____________________.

Fluorescein 18 emits ________________________ as it decays to another isotope.

Which of the equation sets represents coupled reactions?

Strategies to combat antimicrobial drug resistance include all of the following EXCEPT:

Which of these antibiotics does NOT target protein synthesis?

An enzyme has a K_M of 20 µM and a V_max of 50 mmoles of product/minute/µg of enzyme. After exposure to an inhibitor and analysis on a Lineweaver-Burk plot the following values are obtained: -1/ K_M = - 0.05 liters/µmole and 1/ V_max = 0.04 (mmoles of product/minute/µg of enzyme)^-1. What kind of inhibitor was used in the experiment and what data interpretation supports this conclusion?

Below is a segment of a cell's collection of biochemical pathways. M is a product of one series of these reactions. It is also a regulatory molecule. Look at the pathway below and indicate the position(s)at which M is most likely to act as a feedback inhibitor when its concentration gets too high.

Plants can regulate proteins, chlorophylls and other factors required for photosynthesis via a light/dark independent regulatory mechanism known as a _______________________.

What is responsible for the periodicity that controls the production of essential photosynthetic enzymes and factors through the circadian oscillator?

Although the glycolytic pathway is considered catabolic in purpose, some of the reactions within the pathway could be considered anabolic. Select the enzyme in glycolysis which catalyses an anabolic reaction.

You mix reagents (A, B, C, D)so that each is present at an initial concentration of 0.5M. The equilibrium constant for the reaction K_eq is 4. Which choice represents the final concentrations of each reagent $\frac{[\mathrm{C}][\mathrm{D}]}{[\mathrm{A}][\mathrm{B}]}$ once equilibrium is achieved?

Metabolic pathways that provide building blocks from which other molecules can be synthesized and that provide the chemical energy required for many cell activities are known as ______ reactions.

Given the ability of NADH to transfer energy from the high energy electrons it carries, it is a molecule most analogous to:

The effect of a competitive inhibitor can be reversed by _______.

After allowing the reaction to proceed, you find that the the final concentrations of each reagent $\frac{[\mathrm{C}][\mathrm{D}]}{[\mathrm{A}][\mathrm{B}]}$ once equilibrium is achieved is $\frac{[0.3][0.3]}{[0.7][0.7]}$ What is the value of the equilibrium constant K_eq?

When energy is being stored for later use or for use at a distant site, the most frequent form of storage is _____________________.

Which statements regarding the diagnosis and detection of brain tumors are INCORRECT? (Select all incorrect choices)