In nature, this element is prevalent in gypsum and dolomite, as well as a namesake birefringent mineral that marks the 3 on Mohs hardness scale. Its presence in biological cells can lead to the formation of inositol tri-phosphate and di-acyl-glycerol, and its influx into axons causes release of neuro-transmitters. It is stored in the sarcoplasmic reticulum of muscle cells, where it aids contraction by binding to troponin. For 10 points, name this element that needs vitam
In nature, this element is prevalent in gypsum and dolomite, as well as a namesake birefringent mineral that marks the 3 on Mohs hardness scale. Its presence in biological cells can lead to the formation of inositol tri-phosphate and di-acyl-glycerol, and its influx into axons causes release of neuro-transmitters. It is stored in the sarcoplasmic reticulum of muscle cells, where it aids contraction by binding to troponin. For 10 points, name this element that needs vitamin D to be absorbed, which joins with phosphate to form the mineral basis of bone and is symbolized Ca.
In nature, this element is prevalent in gypsum and dolomite, as well as a namesake birefringent mineral that marks the 3 on Mohs hardness scale.
calcium