6. With the presence of fast-food chains, many people have the opportunity to«have a quick bites while their daily physical activity is decreased. Explain whysuch a diet leads to obcsity more quickly under hypodynamic conditions. Foranswer:a) draw the charts of metabolic pathways in adipocytes with their activationleading to increased weight;b) give the origin of substrates, enzymes, ways of using final products;c) draw an appropriate chart and describe the stages of sequential hormonalsignal transduction to adipocytes and explain the biological effects of thehormonc.

Carbohydrate catabolism is the process by which carbohydrates are broken down to provide energy in…

Answered: 6. With the presence of fast-food…

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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Isozymes: d) One way of regulating metabolic pathways is through isozymes. What is an isozyme? e) Provide a concrete example of an isozyme from carbohydrate metabolism. f) From your chosen isozyme in part b), describe how it is regulated differently in various cells.
Cyanide makes a bond to cytochrome in the electron transport chain located in the mitochondria, rendering the electron transport chain useless. The cyanide ingestion in death due to which of the following? a) Starvation, due to an inability to create glucose.b) Build up of lactic acid.c) Inability to take in oxygen through the lungs.d) Cellular death from lack of energy.
12
Cells use primarily two ways of storing potential energy: 1) as concentration gradients and 2) in molecules. A) Explain how energy can be stored in these two forms and how it can be used to do other work. B) Propose an analogy that can explain each of these forms of energy storage using everyday items.
3. A patient has got excess carbohydrate meal for the years and gain the weight. To explain this: a) draw the schemes of TAG synthesis in the liver; b) describe the transport of TAG from the liver to adipose tissue; c) describe the functions of insulin in the conversion of glucose to TAG in the liver and adipose tissue. Glucose containing Catoms was added to isolated hepatocytes inanexperiment. Ifthe glucose was added in excess, the rate of triacylglyccrol synthesis increased.
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)
A proton gradient is created during the electron transport chain using the energy released from the oxidation of NADH and FADH2. The protons then cross the membrane through ATP synthase down their electrochemical gradient, and ATP is produced. This is an example of A) energy coupling B) cotransport C) allosteric regulation.
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.
How does the proton motive force lead to production of ATP? A) ATPase requires one proton to make one ATP. B) Protons must be pumped against a concentration gradient from outside of the cell into the cell to rotate the F0 subunit of ATPase for the F1 subunit to make ATP. C) Oxidative phosphorylation of ADP by ATP synthase requires protons as cofactors in the reaction. D) Translocation of three to four protons drives the F0 component of ATPase, which in turn phosphorylates one ADP into ATP.
Which of the following about glycolysis ARE/IS correct? (choose all that apply) a) During glycolysis, a Cys residue on an enzyme works as a nucleophile to attack a carbonyl group on a substrate. b) The net result of a single glycolysis run on one molecule of glucose creates two molecules of pyruvate and 2 ATP c) If you label C3 and C4 in glucose, after it is converted to lactate, you can't find any labeled carbons. please explain your answer(s)
Mercury poisoning would affect which of the following? OA) Pyruvate dehydrogenase complex. OB) Hexokinase. OC) Complex 1. OD) ATP Synthase.
Rank the molecules/sets of molecules highest to lowest in terms of how much ATP can be obtained from them during aerobic cell respiration. a) glucose > 2 pyruvate > 2 acetyl CoA b) 2 acetyl CoA > 2 pyruvate > glucose c) glucose > 2 acetyl CoA > 2 pyruvate d) 2 acetyl coA > glucose> 2 pyruvate e) 2 pyruvate > glucose > 2 acetyl CoA

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