The unique sequence of amino acids for each kind of protein is the primary protein structure. A compound light microscope has a beam that moves back and forth across the surface of a specimen that has been coated with a thin metal layer. Prokaryotic cells do not have mitochondria. Prokaryotic cells do not have a nucleus. The membrane folds within the mitochondrion are known as cristae.
Many biologists consider mitochondria to be a good example of viruses.
A cell has mitochondria and ribosomes. Based on this information, it could not be a cell from a pine tree. Click here for answers to Lecture 9 Practice Questions Click here to move on to Lecture 10 Questions. Click here to return to the Biology 104 home page.