Examlex
The X-ray diffraction studies by which of the following scientists concluded that DNA was a double helix?
Proteosomes
Complex protein structures within cells that breakdown and recycle proteins that are damaged or no longer needed.
Peroxisomes
Membrane-bound organelles within cells that contain enzymes for breaking down toxic substances and synthesizing certain lipids.
Cell's Life Cycle
The series of phases (growth, DNA replication, division) through which a cell passes from one division to the next.
Carrier-Mediated Processes
Biological transport mechanisms in which specific carrier proteins facilitate the movement of molecules across cell membranes.
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