Molecular Genetics: DNA/RNA

1rst attached picture question:

Which alternative identiies correctly the enyme-directed processes 1, 2 and 3?
 
Alternative          Process 1                     Process 2                                     Process3
A.                      ligase                    restriction enzymes                                ligase
B.                restriction enzymes       restriction enzymes                               ligase
C.                      Ligase                         ligase                                     restriction enzymes
D.                restriction enzymes             ligase                                     restriction enzymes

2nd attached picture question:

1. The nitrogen bases for positions X and Y are, respectively,
a) uracil and guanine
b) adenine and cytosine
c) uracil and cytosine
d) thymine and guanine

2. The amino acid labelled W is
a) arginine
b) tryptophan
c) alanine
d) methionine

3.. As cells age, there is an increase in DNA damage and a decrease in DNA repair processes. The initial effect is
a) the production of altered proteins
b) the production of abnormal mRNA
c) a decrease in ATP synthesis
d) an increase in cancerous cells

please help and thank you