Answer:
Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
Explanation:
Killing them would be unethical, actually animal cruelty. Unethically changing them in anyway that would harm them would be unethical.
Parfocal refers to the idea that an image should maintain focus when shifted between distinct objectives. You should only make precise focus adjustments after the image is in focus.
<h3>Why is parfocal imaging crucial in microscopy?</h3>
Parfocal goals are those that can be modified with little to no focussing. It is convenient when the lenses stay in focus when you change the magnification on your microscope. When a microscope has named objectives, this is feasible.
The picture will stay in focus while switching from a lower-power objective to a higher-power objective because high-quality microscopes are parfocal. The oil reflects more light because it has the same refractive index as glass.
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Analogous structures have different evolutionary ancestries but have the same function. some types of structures are the wings of birds, bats and insects. Homologous structures are the opposite, they have similar ancestries and common traits but not the same function.
