Examlex
Nucleotides and amino acids are both "building blocks" of larger molecules.
Aperture
An opening, hole, or gap, often referring to the variable opening in the lens of a camera through which light passes.
Revolving Nosepiece
A part of a microscope that holds multiple objective lenses and can rotate to change magnification.
Objective Lens
An objective lens is the part of a microscope or telescope that gathers light from the sample being observed and focuses it to create an image.
Ocular Lens
The lens inside the eye that focuses light on the retina to create clear images.
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