In a Lineweaver-Burk graph, the place where the line crosses the Y-axis represents:  a)  Km   b)  Vmax   c) 1/Km    d)  1/Vmax Which coenzyme is most often used in dehydrogenation reactions of the type –CH2CH2- = -CH=CH- ? a) NAD   b)   FAD   c)   NADP    d)  FMN Which one of these transports fructose? A) GLUT-2 b)  GLUT-3   c)   GLUT-4    d)   GLUT-5 The pyruvate dehydrogenase complex converts pyruvate to which molecule? A) oxaloacetate b)   glycogen   c)  acetyl-CoA  d)  citrate The pyruvate dehydrogenase complex produces how many ATP molecules at the substrate level? A) 0   b)   1   c)   3   d)  4 The pyruvate dehydrogenase complex produces how many ATP molecules indirectly via oxidative phosphorylation per glucose molecule? A)  1   b)  3    c)  5  d)  over 30

Define the following terms: A) substrate B) cofactor C) coenzyme D) apoenzyme E) holoenzyme

Ammonia enters the urea cycle as: OA) aspartate. OB) glutamate. C) carbamoyl phosphate. OD) NH4.

You are conducting a study of comparing human, chlamydomonas and Cyanobacteria. Which is a protein found in both chlymydomoans and humans but not in Cyanobacteria. a) mitochondrial receptor protein b) atp synthase c) citrate synthase of citric acid cycle d) ribosome protein

Which of the following condenses with oxaloacetate to form citrate?   A) carboxybiotin B) cis-aconitate C) acetyl-CoA D) oxalosuccinate E) succinyl-phosphate

the compound produced by the Calvin Benson cycle that so important to the maintenance of life on earth is a) water b) carbon dioxide c) oxygen d) glucose 2. cellular respiration refers to a) the diffusion of oxygen into the cells b) breathing  c) the transfer of O2 and CO2 across a cell membrane Carbon dioxide is to the Calvin Benson cycle is  a) oxaloacetic acid is to the electron transport system  b) pyruvic acid is to glycolysis  c) ATP is the electron transport system  d) acetyl co-enzyme A is to the Kreb's cycle  most of the atp produced in cellular respiration is associated with the a) formation of pyruvic acid b) krebs cycle c) formation of water d) production of alcohol  Both NAD and FAD are compounds derived from the B vitamins niacin and flavin. Which of the following would most likely be a symptom of a person whose diet is deficient in these vitamins. a) increase production of carbon dioxide b) a lack of energy c) increase production of water d) decrease oxygen production

Which of the following glycolytic enzymes is NOT subject to regulation a) Hexokinase b) PFK-1 c) Both GAPDH and Triose phosphate isomerase (TPI) d) Triose Phosphate Isomerase (TPI) e) GAPDH

Which of the following is an appropriate definition of zymogen? a) An inactive enzyme precursor b) A digestive enzyme c) A protease d) All of the above

Which of the following statements is INCORRECT? OA) The inhibition of phosphofructokinase leads to the inhibition of hexokinase. B) Fructose-1,6-bisphosphate activates pyruvate kinase. OC) In the liver, phosphofructokinase is activated by citrate. OD) GLUT5 transports fructose.

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