AP BIOLOGY

Detailed explanation-1: -All cells are made from the same major classes of organic molecules: nucleic acids, proteins, carbohydrates, and lipids.

Detailed explanation-2: -A cell has three main parts: the cell membrane, the nucleus, and the cytoplasm. The cell membrane surrounds the cell and controls the substances that go into and out of the cell. The nucleus is a structure inside the cell that contains the nucleolus and most of the cell’s DNA.

Detailed explanation-3: -It’s official–there are some 42 million protein molecules in a simple cell, revealed a team of researchers led by Grant Brown, a biochemistry professor in the University of Toronto’s Donnelly Centre for Cellular and Biomolecular Research.

Detailed explanation-4: -Answer and Explanation: The cell structures where proteins are made are called ribosomes. Ribosomes are organelles made of ribosomal RNA (rRNA) and protein. They exist in the cytoplasm of the cell and are the site of protein synthesis in all cells.