<span>If I were attempting to date a rock sample that I suspect to be incredibly old, i would use radioactive isotopes with a long half life. When dating rocks and fossils to discover approximately how old they are, radioisotope dating is used on igneous rocks found near fossils. Things like Uranium 235, which is an unstable radioactive isotope of elements, decays at a constant rate over time so can be useful in determining age.</span>
C. ATP (Adenosine Triphosphate) has three phosphate groups attached. Each one of the groups occupies an extremely high energy bond (free energy that can do work). In muscle contraction, that high-energy bond is broken and the energy is released for muscle contraction. So when the bond is broken, you end up with ADP (Adenosine Dipohosphate) - broken down.
Released energy can be lost to the environment in heat form.
Answer:
c. Increased reabsorption of phosphate in the kidneys
d. Increased deposition of calcium into the bones.
Explanation:
Hyperphosphatemia is a condition that is expressed particularly in people with a kidney dysfunction. It comprises the kidneys, which do not excrete enough phosphate from the body as they reabsorbe it and thus leading to increased phosphate levels.
Also, phosphate binds calcium with high affinity, provoking acute hypocalcemia (decreased levels of calcium). In Hyperphosphatemia, calcium is being deposited mostly in the bone but also in the extraskeletal tissue.
Answer:
an advantage is living cells can be examined in their natural state without previously being killed, fixed, and stained
