Your immune system fights of disease
The answer is thousands, thousands of chloroplasts can be found in the photosynthetic cells.
Answer:
The correct answer is: a single layer of flattened cells.
Explanation:
The epithelium is one of the four basic tissues and has many important functions. <u>These functions are given by the specific characteristic of the epithelium considering its location.</u> For example, an epithelium that specializes in protection (for example, the one found in skin) has lots of layers in order to carry this task.
Epithelium that specializes in the passive diffusion of materials from one fluid to another needs to have a single layer of flattened cells: this way, <u>the fluids can diffuse easily than if the epithelium had many layers or cubical cells.</u>
Light microscopes can be used to observe any type of object, but using an electron microscope to look at metallic objects would damage the microscope.
Light microscopes can be used to observe live specimens, but preparing a specimen for electron microscopy would kill it.
Light microscopes have much higher magnification power than electron microscopes, as long as a high resolution image is not needed.