Are these cells like the single-celled organisms? We use the same word for the cells in your heart as for a single-celled organism like the bacteria you saw. Both are called cells. Are there any differences?

One you can see with the naked eye and the other you can not.

Explanation:

When your are talking about single celled organisms you can see the cells like bacteria. When you talk about non singled celled organisms you can see that organism.

One you can see with the naked eye and the other you can not.

Explanation:

when you are talking about  single celled organism you can see the cells like bacteria when you talk about non singled cell organism you can see that organism

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.

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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.  

can you attach the