What replicates during mitosis? A. cytoplasm B. proteins C. organelles

D. cells

In mitosis, the process of cell division, the correct answer is D. cells. During mitosis, one cell divides into two identical daughter cells. This involves the replication and division of the cell's DNA, as well as the duplicating of other cellular components.

To arrive at this answer, we can eliminate the other options by understanding what happens during mitosis.

A. The cytoplasm, which refers to the gel-like substance inside the cell, does not actively replicate during mitosis. Instead, it divides equally between the two daughter cells after the DNA has been replicated. So cytoplasm is not the correct answer.

B. Proteins are essential components of cells, but not everything that replicates during mitosis. Proteins are synthesized by ribosomes using the instructions encoded in DNA. While some proteins might be involved in the process of mitosis, they do not themselves replicate during this process. So proteins are also not the correct answer.

C. Organelles are the specialized structures within a cell that carry out specific functions. While organelles are involved in cell division and are distributed between the daughter cells, not all organelles replicate during mitosis. Some organelles, like mitochondria, have their own separate replication processes, while others, like the nucleus and its contents, undergo replication during mitosis. However, since the question asks specifically about replication during mitosis, organelles would not be the correct answer.

D. Since cells themselves replicate during mitosis, this is the correct answer. The DNA within the nucleus of the cell replicates, and the cell then physically divides, resulting in two daughter cells with identical genetic material.

Therefore, the correct answer to "What replicates during mitosis?" is D. cells.