Which two structures produce energy for a plant cell

a. nucleus and cytoplasm
b. mitochondrion and cytoplasm
c. mitochondrion and chloroplast
d. cell membrane and chloroplast

I'm almost positive it is C. Mitochondria and chloroplasts

Explanation:

Answer/Explanation:

mitochondrion and chloroplast

mitochondria break down carbohydrate and sugar molecules

chloroplast is what is used to do photosynthesis

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explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

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