Which of these is atp?
a molecule consisting of two phosphate groups, ribose, and adenine.
a molecule consisting of three phosphate groups, ribose, and adenine.
a molecule consisting of three phosphate groups, deoxyribose, and adenine.
a molecule consisting of three phosphate groups, ribose, and thymine.
a molecule consisting of three phosphate groups, deoxyribose, and guanine.

The correct answer is A molecule consisting of three phosphate groups, ribose, and adenine.

Explanation:

ATP means adenosine triphosphate, and it is a molecule which has a very important role in energy transfer in the cells.  As its name says, it is composed by:

- adenine: a purine base, which is also a component of nucleic acids.

- ribose: a 5-carbon sugar (in contrast to deoxyribose, ribose has a -OH group in place of a -H group in carbon 2)

- three phosphate groups

Notice that adenine bonded to the ribose is called adenosine.

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"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."