Question

question 13 1 pts in base pairing of dna molecules, __ is bound to __. adenine; thymine adenine; cytosine guanine; uracil adenine; uracil question 14 1 pts atp is an amino acid. provides enzymes for metabolism. is the form of energy that cells generally use. has a double helix structure. question 15 1 pts the lipid that is often referred to as a tissue hormone is cholesterol. triglyceride. prostaglandin. phospholipid.

Explanation:

• Question 13: In DNA base - pairing, adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C). Uracil (U) is found in RNA, not DNA.
• Question 14: ATP (adenosine tri - phosphate) is the energy - currency of the cell, the form of energy that cells generally use. It is not an amino acid, does not provide enzymes for metabolism, and does not have a double - helix structure.
• Question 15: Prostaglandins are lipids often referred to as tissue hormones. Cholesterol is a lipid but not a tissue hormone. Triglycerides are energy - storage lipids, and phospholipids are components of cell membranes.

Answer:

Question 13: adenine; thymine
Question 14: is the form of energy that cells generally use.
Question 15: prostaglandin