You will find 3 of these in ATP.

a)hydroxyl group
b) amino group
c) phosphate group
d) carboxyl group

To find out which of these groups are present in ATP (adenosine triphosphate), we need to have a basic understanding of the structure of ATP.

ATP is composed of adenosine (a nucleoside) and three phosphate groups. The structure of adenosine includes a nitrogenous base called adenine and a five-carbon sugar called ribose. The phosphate groups are attached to the ribose.

Now, let's examine the options you provided:

a) Hydroxyl group: A hydroxyl group consists of an oxygen atom bonded to a hydrogen atom (-OH). In ATP, there are no separate hydroxyl groups present.

b) Amino group: An amino group consists of a nitrogen atom bonded to two hydrogen atoms (-NH2). In ATP, there are no separate amino groups present either.

c) Phosphate group: A phosphate group consists of a phosphorus atom bonded to four oxygen atoms (-PO4). This is the key component of ATP. In fact, there are three phosphate groups in ATP, and they play a crucial role in storing and releasing energy.

d) Carboxyl group: A carboxyl group consists of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group (-COOH). In ATP, there are no carboxyl groups present.

So, the correct answer is c) phosphate group. ATP contains three phosphate groups, which make it an energy-rich molecule that is vital for various cellular processes.