Which of the tollowing is a molecule but not a compound? a. H20 b C6H1206 C. N2

Question

Which of the tollowing is a molecule but not a compound? a. H20 b C6H1206 C. N2 d. H202 12. The identity of an element is determined by its: a Atovic number Mass number c. Electron number d. The number of protons and electrons 13. Which of the following bonds form between amino acids? c. Ribose linkage d. Glycosidic linkages a Peptide bond 14. The first law of thermodynamics states that a enengy is neither created nor destroyed t Entropy increases c Energy conversion results in a less of usable energy in form of heat 4 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 1S. isotopes of an element differ in d. Number of electrons e. No, the answer is not here a The mumber of protons b Number of neurons t5 in a hydrolyis reactionthis process, water is a monomers bond to forms a polymer produced b monomers bond to form a polymer consumed c a polymer breaks up to form monomersproduced s monomers are assemblied to produce a polymer coesumed :7. What is the process by which cels link monomers together to form polymers? d. Monomerization reactions e. More than one is correct which of the following is a monosaccharide ? a Glucose b Sucrose c Cellulose c. Celulose d. Chitin 19. Cholesterol belongs to which class of molecules? D Lipidi 20 Energy ia defined as c. Carbohydrates d. Nucleic acids aAbility to import particles into the cell b The capacity to do work c Ability to run d Ability to remove particles out of the cell e More than one is correct 21. Which of the following in regards to electrostatic interactions is incorrect? a. They form noncovalent bonds between enzyme and ligand b. They form covalent bonds between enzyme and substrate c These interactions are the strongest in aqueous environment d. Bonds form through positive and negative interactions e. More than one seems to be correct 22. Hydrophoblic interactions occur in The plasma membrane b. Protein structure c None are correct a. d. Proteins of plasma membrane e. All are correct

Explanation / Answer

Ans.

11. a) N2 is a molecule but not a compound, because compounds are made up of more than two elements.

12. a) atomic number.  

13. a) Peptide bond

14. a) first law of thermodynamics states that Energy can neither be created nor be destroyed

15. b) isotopes of an element differ in the no. of neutrons

16. in a hydrolysis reaction polymer is lysed into its monomeric forms and water is consumed. none of the options seem to be correct.

17. e) Dehydration, polymerization and condensation are the proceses which are used to link monomers to form polymers.

18. a) glucose is a monomer.

19. b) lipids

20. b) Energy is defined as the capacity to do work.

21. b) electrostatic interactions does not involve covalent interactions.

22. e) all are correct.

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