Where is most of the water in this reaction produced? C6H1206 +60₂ →6CO₂ + 6H₂O OA) glycolysis B) electron transport chain C) fermentation

Proton motive force refers to A) the movement of protons across a membrane due to a proton gradient. B) the flow of electrons through an electron transport chain. C) the action of ATPase enzyme. D) oxidative phosphorylation. E) the oxidation of NADH2 and FADH2.

Several of these reactions are energetically unfavorable and will only occur if coupled to a second, energetically favorable reaction? Circle the unfavorable reactions. a) Glucose + 02 → CO2 + H2O b) CO2 + H2O → glucose + 02 c) Nucleoside triphosphates → DNA d) Nucleotide bases → nucleoside triphosphates e) ADP + Pi → ATP

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

The word "exergonic" refers to which of the following in metabolism? anabolic pathways for the synthesis of biological molecules from simpler pathways that use chemical energy of ATP to form new covalent bonds biochemical pathways that produce chemical energy in the form of the high- a) energy bonds of ATP molecules b) c) precursors biosynthetic processes that uize NADPH as a source of high-energy hydrogens and electrons same as endergonic d) e)

14) Which of the following statements is true under the conditions provided: the enzyme concentration is 0.5 nM, substrate concentration is 10 µM, and the KM = 20 µM? a) The enzymatic reaction occurs at maximal velocity. b) The enzymatic reaction occurs between half-maximal and maximal velocity. c) The enzymatic reaction occurs at around half-maximal velocity. d) The enzymatic reaction occurs at between zero and half-maximal velocity. e) Not enough information given to know about the enzymatic reaction rate.

Which of the following factors does NOT help cells survive and grow well in an AEROBIC environment?   a) Superoxide Dismutase b) Catalase c) Peroxidase d) Hydroxyl radicals e) Thioglycolate

Which of these process is a common step that happens before both aerobic respiration and anaerobic respiration? A) citric acid (Krebs) cycle B) glycolylcle C) electron transport chain D) All of the above

Why is oxygen required for ATP generation by the electron transport chain and oxidative phosphorylation? a) Oxygen is needed for glycolysis b) Oxygen is the electron donor for the electron transport chain producing CO2 c) Oxygen helps proteins fold better d) Oxygen is needed to made water and produce protons for the electron transport chain e) Oxygen is the ultimate electron acceptor

Each of the following complexes pumps protons out of the matrix to generate the proton gradient except   A) complex I. B) complex II. C) complex III. D) complex IV. E) coenzyme Q