When scientist do a experiment what do they rely on

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Asap i will reward you brainliest for best which sentence about protists is accurate? all protists are unicellular and microscopic in nature. they have organelles, so protists are eukaryotic in nature. all protists make their own energy through photosynthesis.