For questions 1 and 2 use this diagram of the cell where one of the mitochondria has been enlarged.
From the information in the passage and the diagram, what can
you conclude about the structure of mitochondria?
They are organelles, which are a group of flattened
membrane sacs stacked on top of each other.
They take instructions from DNA and make proteins.
They are membrane-bound organelles with a second,
folded membrane inside to provide extra area for cellular
respiration
They break down sugars to provide energy for the cell.

they break down sugars to provide energy for the cell

Explanation:

I'm not sure about my answer but I would have gone with that cause mitochondria are sites for respiratory reactions that yield energy to the cell

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.