Which of these events occurs during the normal function of ATP in the cell?

 Answer is given in the explanation.

Explanation:

ATP is an important source of energy for most cellular processes. The basic components of ATP are carbon, nitrogen, hydrogen, oxygen and phosphorous. Due to the presence of unstable high-energy bonds in ATP, it readily hydrolyzes during reactions to release a large amount of energy.

Normal ATP functions in cells:

Active transport

ATP plays a crucial role in the transport of macromolecules, such as proteins and lipids, inside and outside the cell.

Cell Signaling

ATP has key functions in intracellular and extracellular signalling. It can be easily recognized by purinergic receptors in mammalian tissues: its release from synapses and axons activates purinergic receptors that modulate levels of calcium and cyclic AMP in the cell.

Structural maintenance

ATP plays a very important role in maintaining cell structure by helping to build elements of the cytoskeleton.

Muscle contraction

ATP is crucial for muscle contraction; binds to myosin for energy and facilitates its binding to actin to form a cross-bridge.

Synthesis of DNA and RNA

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explanation:

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the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.