Glycoysis MCQ

Select the correct multiple answer using ONE of the keys A, B, C, D or E as follows:
A. (i), (ii)and (iii) are correct
B. (i) and (iii) are correct
C. (ii) and (iv) are correct
D. only (iv) is correct
E. all are correct

1. Which of the following  lists enzymes all facilitate the removal or addition of phosphate groups?
   (i)phosphoglycerate kinase, enolase, glycerate-3-phosphate dehydrogenase
   (ii)aldolase, enolase, triose phosphate isomerase
   (iii) phosphofructokinase-1,triose phosphate isomerase, phosphoglycerate mutase
   (iv)phosphofructosekinase -1, pyruvate kinase, phosphoglycerate kinase

2.In which reaction is ATP used up?
(i) fructose -6- phosphate ——> fructose -6-bisphosphate
(ii)Phosphoenol pyruvate ——->pyruvate
(iii)glucose ——> glucose -6-phosphate
(iv)  dihydroxyacetone phosphate—–> glyceraldehyde -3-phosphate

3 Which reaction of glycolysis are irreversible reactions?
(i) fructose -6- phosphate ——> fructose -6-bisphosphate
(ii)phosphoenol pyruvate ——>pyruvate
(iii) glucose —-> glucose – 6- phosphate
(iv) dihydroxyacetone phosphate—–> glyceraldehyde -3-phosphate

4. For every glucose molecule metabolised, how many molecules  of dihydroxyaceton  phosphate is produced in glycolysis
(i)2
(ii)4
(iii) 0
(iv) 1

5.

In the reaction above, what do A,B ,C and D  represent?

(i)( A) ATP ;( B)-  ADP
(ii)( A) NAD+ & Pi; (B) NADH & H+
(iii) (C) NADH2 + Pi   ;  (D) NADH
(iv) (C) ADP   ;   (D) ATP