Durante la etapa fotodependiente los e- que reducen al NADP provienen directamente de 1) el fotosistema II
2) el fotosistema I
3) el agua
4) la plastoquinona

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom