Author: Anonymous

Hypocapnia is usually caused by:

Desmosomes are an example of which type of junctions?

ATP is the energy currency of living cells, which is made by an enzyme called ATP synthase. What powers the activity of ATP synthase?

Which one of the following statements about disulfide bonds is true? 

Which one of the following statements about nucleotides and nucleic acids is true? 

What mass (in grams) of NaOH do we need to prepare 250 mL of a 4 M solution? (Molar mass of NaOH = 40 g/mol) 

The concentration of compound X is measured at different time intervals during the course of a chemical reaction. After plotting a graph of the concentration of X against time, shown below, the points labelled A-E on the graph have the following co-ordinates: A: x = 0 seconds; y = 0 mol L-1 B: x = 110 seconds; y = 71 mol L-1 C: x = 225 seconds; y = 92 mol L-1 D: x = 330 seconds; y = 126 mol L-1 E: x = 450 seconds; y = 120 mol L-1     What is the rate of the chemical reaction at point C?       

Which one of the following statements regarding a dynamic equilibrium is false?   

Which one of the following statements regarding glucose metabolism is true?

Questions 41 – 43 relate to the following problem: A solution of sodium hydroxide contained 0.95 mol dm-3. Using phenolphthalein indicator, titration of 50.0 cm3 of this solution required 27.0 cm3 of a hydrochloric acid solution for complete neutralisation.                                       Question 41: How many moles of sodium hydroxide were neutralised? Give your answer to 4 d.p.