a energy is neither created nor destroyed b. Entropy increases c Energy conversi

Question

a energy is neither created nor destroyed b. Entropy increases c Energy conversion results in a loss of usable energy in form of heat d. Energy cannot be changed from one form to another without a loss of useable energy e. All energy transformations lead to an increase in amount of disorganization 12. Which of the following is a monosaccharide? 13. Cholesterol belongs to which class of molecules? 14. In what direction does a chemical reaction proceed? e. Cellulose a Glucose b. Sucrose d. Chitin a Protein b. Lipids c. Carbohydrates d. Nucleic acids a Direction in which loss of free energy is minimized b. Direction in which there is a loss of free energy c. Direction that leads to a more positive free energy d. Diroction that leads to less entropy 15. Coupled reactions are b. Brings energetically favorable and nonfavorable reactions together Needs the help of enzymes in order to occur c. d. None of these choices seem right I think choices a to c seem to be correct e. 16. Plants convert and animals convertto energy into a. Solar energy, chemical bond energy, chemical bond energy, heat energy b. Solar energy, heat energy, chemical bond energy, chemical bond energy c. Solar energy, chemical bond energy, heat energy, chemical bond energy d. Chemical bond energy, solar energy, chemical bond energy, heat energy 17. All of the following are activated carriers except: a. NADPH b. NADPH3 c. FADH2 d. ATP reaction 18. The Catalyzed pathway in a reaction mechanism has activation energy and thus causes a rate? a. Lower, Steady b. Lower, Higher e. Higher, Higher c. Higher, Steady d. Higher, Lower 19. Enzyme-catalyzed reactions generally: a. Generate a metabolic pathway c. Generate an enzymatie pathway d. Generate a catabolic reaction Generate an anabolic pathway 20. Hydrophobic interactions occur in: b. The plasma membrane b. d. Proteins of plasma membrane e. All are correct a. Protein structure None are correct c. 21. Second law of thermodynamics states that: b. energy is neither created nor destroyed Entropy increases c. d. Energy conversion results in a loss of usable energy in form of heat e. Energy cannot be changed from one form to another without a loss of useable energy 22. In a hydrolysis reaction, In this process, water is a. Monomers bond to form a polymer.. produced b. Monomers bond to form a polymer ...consumed c. A polymer breaks up to form monomers

Explanation / Answer

12)a-glucose(monosaccharide),sucrose-disaccharide,cellulose,chitin-polysaccharide

13)b-lipids(it is organic wax like faty substance.Type of lipid molecule)

16)a-(here the plants by using solar energy in the process of photosynthesis synthesis chemcal compounds like starch,animals inthe process of respiration converts chemical bonds into heat energy)

22)c-(hydrolysis of polymers are brake down into monomers during the reaction water molecule is consumed)

21)c-entropy increases(in a closed system when energy changes from one form to another form entropy(disorderness)incresaes

20)d-(hrorobhobic ineractions are nothing but interaction between nonpolar molecules,intrinsic proteins of plasma membrane have hydrophobic sides)

19)d-(enzymes are biological catalyst ,generally they generate catabolic reactions like glycolysis,breakdown of proteins ,carbohydrates,fats etc)

18)b-(catalytic reactions involved lowering of activation energy and increased reaction rates)

17)c-(here the FADH2 is created by oxidation-reduction process)

15)b-(a reaction in which a comman intermediate is present are called as coupled reactions,here the energitically favoured reactions are directly linked with unfavourable reactions)

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