Answer: The nucleus.
Explanation: In an atom, there are two main parts, the nucleus and the electron cloud/electron shells. The protons and neutrons are located in the nucleus, and the electrons are located in the electron shells/cloud/whatever.
Option A. Bipolar disorder differs from schizophrenia in that schizophrenia typically involves hallucinations.
What is bipolar disorder?
- Bipolar disorder, previously known as manic depression, is a mood disorder characterized by periods of depression and periods of abnormally-elevated happiness that last from days to weeks each.
- If the elevated mood is severe or associated with psychosis, it is called mania; if it is less severe, it is called hypomania.
What is schizophrenia?
- A disorder that affects a person's ability to think, feel, and behave clearly.
- The exact cause of schizophrenia isn't known, but a combination of genetics, environment, and altered brain chemistry and structure may play a role.
What is hallucination?
- A perception of having seen, heard, touched, tasted, or smelled something that wasn't actually there.
- Hallucination can have causes that aren't due to underlying disease. Examples include drug intoxication.
To know more about hallucination, refer:
https://brainly.ph/question/10808859
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The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.