1. Which of the following are a part of an ATP molecule? Choose all that apply. A deoxyribose sugar C adenine E phosphate B ribose sugar D bicarbonate F cytosine

## Step 1<br />An ATP (Adenosine Triphosphate) molecule is composed of three main components: an adenine molecule, a ribose sugar, and three phosphate groups. <br /><br />## Step 2<br />Adenine is a nitrogenous base, which is a component of ATP. Therefore, option C is correct.<br /><br />## Step 3<br />Ribose sugar is a five-carbon sugar molecule that forms the backbone of ATP. Therefore, option B is correct.<br /><br />## Step 4<br />Phosphate groups are three in number in an ATP molecule. Therefore, option E is correct.<br /><br />## Step 5<br />Deoxyribose sugar, bicarbonate, and cytosine are not components of an ATP molecule. Deoxyribose sugar is a component of DNA, not ATP. Bicarbonate is a compound involved in pH regulation, not a component of ATP. Cytosine is another nitrogenous base, but it is not a component of ATP.