Two Amino Acids are joined by which linkge/bond

The code “wof” represents recommendation of the following word?

.  In the following question, find which one word cannot be made from the letters of the given word “CORRESPONDENCE” 

How many such symbols are there in the above series each of which is immediately followed by a number and also immediately preceded by a consonant?

In the given arrangement, how many numbers are between the second symbol from the right end and the third symbol from the left end?

Study the following information carefully and answer the given questions.

Select the option that represents the letters that when sequentially placed from left to right in the blanks below will complete the letter series.

Which element is exactly in the middle of third vowel from the left end and eighth symbol from the right end of the given arrangement?