What completely covers the cell and holds it together

In general, are there any major differences that you can see? explain

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

Dawn mistakenly took a multivitamin intended for men that contains 90 mg of vitamin c (or 100% of the vitamin c rda for men). if the multivitamin was dawn’s only source of vitamin c for the day, what percentage of the women’s vitamin c rda did she consume? a. 52% b.83% c.100% d.120%