6.Which complex reduces molecular oxygen? Choose one (5 points)a. complex Ib. complex IIC. complex IIId. UQH/UQH2 poole. complex IVa. complex 1b. complex IIc. Complex IIId. UQH/UQH2e. complex IV

Step 1: The complex that reduces molecular oxygen is complex IV, also known as cytochrome c oxidase.…

Answered: 6. Which complex reduces molecular…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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3. Pulmonary surfactants are molecules excreted within the lungs to reduce the surface tension of fluid in the lungs and helps make the small air sacs in the lungs (alveoli) more stable. Without them, the alveoli would close off with exhalation due to the attractions of the sides to one another when brought closely together. A example of one of these has the general structure: O-PD
12. In a sample consisting of three tripeptides (MDE, KRF, and RDY), which will be eluted last from an anion exchange resin at pH 7? A. all three will be eluted at the same time B. MDE C. KRF D. RDY 13.Oxygens bind to which of the following components in hemoglobin? A. Nitrogen atoms of a histidine side chain B. A pyrrole ring of the heme C. The iron atom of the heme D. Nitrogen atoms of an asparagine side chain E. None of the above
19. Which of the following is true of energy metabolism by cancer cells? choices A. They usually generate ATP through the Krebs cycle. B. They are more efficient at energy metabolism than normal cells and generate 36 molecules of ATP for every glucose molecule metabolized. C. They import much higher levels of glucose in comparison with normal cells. D. None of the above.
1.GroEL/ES is a chaperonin that uses ATP in protein folding. a. True b.False
3. Equal numbers of fibroblasts and endothelial cells are present initially in a culture. a. If the endothelial cells double every 40 hours and the fibroblasts double every 20 hours, draw a graph showing the percentage of cells in the culture that are fibroblasts as a function of time (you can use excel). b. Come up with an equation to determine the time at which 90% of the cells will be fibroblasts and solve for time. Explain how you came up with your equation.
1) Cellular respiration takes place in the mitochondria of cells and in the cytoplasm. 2) Cellular respiration uses glucose made by plants during photosynthesis and tums it into cellular energy (ATP) through a series of three chemical reactions. 3) The three chemical reactions of cellular respiration are called glycolysis, the electron transport chain and the Krebs cycle. 4) Oxygen must be available for cellular respiration to happen if it is not available, then fermentation will break down the glucose. Vocabulary Aerobic-(stem: aero=air) something that requires oxygen or air to work. Anaerobic-(stem: an=non) something that does not require oxygen to work. 602 + CSH12O6 → 6CO2 + 6H2O + Energy (you need to memorize the equation and know the The Cellular Respiration Equation: products and the reactants) The Steps of Cellular Respiration (sometimes called aerobic respiration because it requires oxygen) Step 1: Glycolysis Happens in the cytoplasm. Breaks the glucose in to pyruvic acid. A…
5. With rare exceptions, the majority of oxygen is transported in the blood of vertebrates a. By binding to plasma proteins b. By binding to hemoglobin in erythrocytes c.. As a component of large organic molecules that are broken down by the cells d. As dissolved gas in the cytoplasm of erythrocytes 6. What does the xylermı transport in a plant? a. water and dissolved sugars b. water and dissolved minerals C. water only d. minerals only
QUESTION 44 For the next question, refer to the following figure: В Click Save and Submit to save and submit. Click Save All Answers to save all answers. BEF
e 1.0 0.5- 0 6. Answer the questions below about hemoglobin and myoglobin. a. Sketch and label the binding curves of Mb, Hb, and Hb below. pº₂ b. In the scenarios below for Hb, indicate what effect they would have on the binding curve and give a brief explanation? Scenario Decrease in the concentration of carbon dioxide (CO₂) Distal histidine (the histidine that aids in molecular oxygen binding) mutation to phenylalanine High heat and extreme pH changes Predict if the normal binding curve of Hb will shift right (Hbt), left (HbⓇ), completely to Mb, or no longer bind oxygen completely? Brief Explanation
5. Which of the following proteins (or protein complexes) is a secondary active symporter? A. A B. B C. C D. D E. E E 3 Na* D C X Sugars, amino acids... K+ CI ADP + Pi ATP 2 K+ Nat cl JA CI ㅎ Cytosol (B)
11. Anomers can be interconverted ________. A. by an isotopic exchange reaction B. by rotation about carbon-carbon bonds C. Both A and B D. Neither A nor B Which of the following is true for role of glucose-6-phosphate in the regulation of carbohydrate metabolism? A. Glucose-6-phosphate allosterically activates glycogen phosphorylase B. Glucose-6-phosphate allosterically inhibits glycogen synthase C. Glucose-6-phosphate allosterically inhibits hexokinase kinase D. None of the above are correct
I only need numbers 39-41

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6. Which complex reduces molecular oxygen? Choose one (5 points) a. complex I b. complex II C. complex III d. UQH/UQH2 pool e. complex IV a. complex 1 b. complex II c. Complex III d. UQH/UQH2 e. complex IV