Which of the following statements is most directly described by the first law of thermodynamics? A B с D The synthesis of highly-ordered biomolecules is coupled with the production of heat energy. All energy-transferring processes involve the loss of some of that energy into an unus- able form. Enzymes reduce the activation energy of chemical energy by stabilizing substrates at their transition states. The energy for the synthesis of glucose is provided by the absorption of light energy in chlorophyll pigments.

Which of the following statements is most directly described by the first law of thermodynamics? A B с D The synthesis of highly-ordered biomolecules is coupled with the production of heat energy. All energy-transferring processes involve the loss of some of that energy into an unus- able form. Enzymes reduce the activation energy of chemical energy by stabilizing substrates at their transition states. The energy for the synthesis of glucose is provided by the absorption of light energy in chlorophyll pigments.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter2: Cell Physiology

Section: Chapter Questions

Problem 3SQE

See similar textbooks

Similar questions

iodoacetate is an irreversible inhibitor of glyceraldehyde-3-phosphate dehydrogenase. which of the following is the expected outcome of the exposure of a cell to iodoacetate - Cellular resiration will stop if the cell solely depends on glucose as fuel - The rate of cellular respiration will increase - The reoxidation of coenzymes will noy be affected , but the efficiency of oxidative phosphorylation will be diminished - There will be no effect on cellular respiration as long as the cell has a large glucose reserve -The cell sill not be able to reoxidize the reduced coenzymes
Under a normal metabolic rate which of the following compounds is the most energy rich? FADH2. Glucose-6-phospate. ATP. NADH. GTP.
A 75 kg person doing light work requires about 3000 kcal of food energy perday, 40% of which is actually used by the body’s cells. (The other 60% is lostas heat and in waste products.) Before being used by the cells, effectively allof this energy is stored in ATP, which is then cleaved into ADP and PO3−2 , with the release of 12.5 kcal per mole of ATP.(a) How many moles of ATP are turned over per day in this fashion? Whatmass of ATP does this correspond to? (The molecular weight of ATP is507 g/mol.)(b) The body actually contains approximately 5 g ATP. Estimate the averagerecycle time for an ATP molecule. You see that it is much more efficientto reuse ADP rather than to synthesize it de novo (from scratch).
Which of the following describes the critical role that ATP plays in cellular metabolism? ATP serves an energy shuttle in the cell, coupling exergonic anf exergonic reactions. The terminal phosphate group of ATP is attached by a particular strong covalent bond that releases extra energy when broken. It is one of the four building blocks for RNA synthesis. Hydrolysis of ATP provides energy to drive exergonic reactions in the cell.
Which of the following do enzymes change?∆G ; reaction rate; types of product generated; activation energy; the laws ofthermodynamics.
By what specific biochemical processesdoes the breakdown of foods result in theproduction of ATP?
Despite the thermal stability of covalent bonds in physiological systems, some of these bonds are sensitive to energy input from external sources. The molecule can absorb heat from the environment without changing its chemical structure, as will occur when there is a local temperature increase. If the increase in energy is above kT (i.e., the entire environment has not increased its temperature), the molecule will come to thermal equilibrium with the environment around it, and return to its original energy state. Which one of the following physiological process is example to this? Select one : a. Absorbance of light by 11-cis-retinal. b. Translucent to opaque conversion of egg whites after cooking. C. Absorbance of light by melanın. d. a & b e. a & c f.b&c g. a, b & c
What type(s) of ATP producing pathway(s) do animal cells utilize? only fermentation only aerobic cellular respiration only anaerobic cellular respiration BOTH aerobic cellular respiration and fermentation BOTH anaerobic cellular respiration and aerobic cellular respiration
Which of the following are the final by products of glucose oxidation during aerobic cell respiration? ATP only Heat only Carbon dioxide only Both ATP and heat only ATP, heat, and carbon dioxide
Which of the following metabolic processes can occur withouta net influx of energy from some other process?(A) ADP +~P i S ATP + H2O(B) C6H12O6 + 6 O2 S 6 CO2 + 6 H2O(C) 6 CO2 + 6 H2O S C6H12O6 + 6 O2(D) Amino acids S Protein
The synthesis of enzymes in response to changing metabolicneeds is referred to as _____________________.
A muscle can be thought of as a fuel cell, producing work from themetabolism of glucose: C6H12O6 + 6O2 → 6CO2 +6H2O Use the concept of entropy to explain why the heat flows in the direction it does.