Elements in the first group of the periodic table are ( ) ?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Some substances but not other can cross the (blank) membrane of a cell

Wich is not standing in the way of astronomers getting a good view of different star