The first one definitely is. An ion is either a positively charged or negatively charged atom. Hope this helps :)
<u>M</u><u>a</u><u>j</u><u>o</u><u>r</u><u> </u><u>t</u><u>y</u><u>p</u><u>e</u><u>s</u><u> </u><u>o</u><u>f</u><u> </u><u>h</u><u>u</u><u>m</u><u>a</u><u>n</u><u> </u><u>t</u><u>i</u><u>s</u><u>s</u><u>u</u><u>e</u><u>s</u><u>:</u>
- Epithelium tissue
- Connective tissue
- Muscle tissue
- Nervous tissue
<u>M</u><u>a</u><u>j</u><u>o</u><u>r</u><u> </u><u>t</u><u>y</u><u>p</u><u>e</u><u>s</u><u> </u><u>o</u><u>f</u><u> </u><u>p</u><u>l</u><u>a</u><u>n</u><u>t</u><u>s</u><u> </u><u>t</u><u>i</u><u>s</u><u>s</u><u>u</u><u>e</u><u>s</u><u>:</u>
- Permanent tissue
- Merismatic tissue
Specific proteins in the body control the chemical reactions of metabolism, and each chemical reaction is coordinated with other body functions. In fact, thousands of metabolic reactions happen at the same time — all regulated by the body — to keep our cells healthy and working.
