Can someone help 6th grade science ASAP PLEASE IM BEING TIMED

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?

In order for p. multocida to survive and carry out cellular functions (and cause infection), the energy contained in each molecule of glucose must be converted into atp. this occurs via the process of chemiosmosis, which couples electron transport to atp synthesis. this process involves the sequential transfer of elections via a series of protein complexes and carriers found in the bacterial plasma membrane. recall that electrons move down the chain in a sequential fashion due to the increasing electronegativity of the components of the electron transport chain. arrange the components of the electron transport chain in order from least electronegative to most electronegative thereby indicating the path of electrons through the electron transport chain.