Question 26what are the structures labeled #1 and #2 in the diagram below? a centrioles; spindle fibersb chromosomes; centriolesc spindle fibers; centromeresd centrioles; sister chromatids( answer)

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants. d- food molecules are broken down in the cells if living things.