28. Which represents an oxidation reaction? a. NaNO3+ KCI-> NaCI+ KNO3 b. AgNO3+

Question

28. Which represents an oxidation reaction? a. NaNO3+ KCI-> NaCI+ KNO3 b. AgNO3+ KBr-> AgBr+ KNO3 d. K->K++e- 29. In what direction does a chemical reaction proceed? a. b. c. d. Direction in which loss of free energy is minimized Direction in which there is a loss of free energy Direction that leads to a more positive free energy Direction that leads to less entropy 30. Coupled reactions are: a. Energetically favorable b. Brings energetically favorable and nonfavorable reactions together C. Needs the help of enzymes in order to occur d. None of these choices seem right e. I think choices a-c seem to be correct 31. In the cell the concentration of: c. NADP and NADPH is equa d. NAD+ to NADPH is equal a. NAD+ to NADH is high b. NADP+ to NADPH is high 32. Which of the following produces a hydride ion? C. NADPH d. NADH:3 e. More than one is correct a. Hydrogen b. ATP 33. Hydrolysis is energetically but dehydration react is energetically a. Unfavorable, favorable b. Favorable, unfavorable c. neutral, unfavorable d. favorable, neutral 34. Detergents can be used to remove proteins from the plasma membrane. Which of the following is not true concerning detergents? a. They have one hydrophilic head and 2 hydrophobic tails b. They unsolubilize lipids c. They disrupt the plasma membrane d. More than one is correct 35. What structure gives animal cells a defined structure a. Cell membrane b. Cell wall c. proteins d. cortex

Explanation / Answer

Answer:

1.

K>k++e represents an oxidation reaction.

Hence,option (d) is correct answer.

29.

Chemical reaction proceeds direction in which there is a loss of free energy.

Hence,option(b) is correct.

30

Coupled reaction brings energetically favourable and energetically unfavourable reactions together.

And enzyme required the enzymes to completion.

Hence,option(d) is correct.

31.

In the cell concentration of NAD+ to NADH is high.

Hence,option(a) is correct.

32.

Hydrogen produces hydride ion.

Hence,option(a) is correct.

33

Hydrolysis is energetically favourable and dehydration is energetically unfavourable.

Hence,option(b) is correct answer.

35.

The structure that gives the cell a defined structure is cell wall.

Hence,option(b) is correct.

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