Me!

the diagram below shows the structure of an animal cell.
what is structure 2, and how does it sustain life?

a structure 2 is the cytoplasm, which contains organelles and is the site of many cell processes.

b structure 2 is the cell membrane, which controls what enters and leaves the cell.

c structure 2 is a chloroplast, which is the site of photosynthesis.

d structure 2 is the nucleus, contains the cells genetic material and serves as the control center of the cell.

Nucleus

Explanation:

structure 2 is the nucleus of the animal cell. Its contains the genetic materials of the cell. It also control the overall process of the cell

no but i do not usually comment or use my voice that much when it comes to social media

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.