Looking Inside: Organelles and Their Functions
Molecules that pass muster with the cell membrane enter the cytoplasm, a mixture of macromolecules such as proteins and RNA…
Aiming for the Nucleus
The cell nucleus is the largest cellular organelle and the first to be discovered by scien- tists. On average, it…
The Cell: Life’s Basic Building Block
Cytology, from the Greek word cyto, which means “cell,” is the study of cells. Every living thing has cells, but…
Cycling through Life: Metabolism
Metabolism (from the Greek metabole, which means “change”) is the word for the myriad chemical reactions that happen in the…