D - Noble Gases im pretty sure
Is there any info to help?
Answer:
Sphenoid bone spans the width of the cranial floor; keystone of the cranium because its central wedge articulates with every other cranial bone. Unlimited access.
Explanation:
Characteristics of Maltase from Baker's Yeast:
Molecular weight: 68,500 daltons. pH Optimum: 7.0 - 7.5 using maltose as the substrate. Inhibitors: Thiol blocking compounds, heavy metal ions, histidine, and certain amines. Tris should not be used as a buffer due to its inhibitory effect.