First, we put the slide onto the stage of microscope. Then we switched on the light to illuminate the onion cell. Next, we turned the knob, so the second lens almost touched the slide. After this we the eyepiece lens. Finally, we turned the knob upwards to bring the onion cells into focus.

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

Acommon kind of mechanical weathering is called

Why is it incorrect to say that mitochondria function only as energy factories with cell