The answer is B
Cell were in existence long before the microscope was invented but could not be studied well. The invention of the microscope opened a whole new dimension of science . By using microscopes scientists have been able to discover the existence of microorganisms and study the structure of cells in astounding detail.
Since their invention ,microscopes have moved from simple, visible light refracting lenses to those which now use electrons such as the electron microscope which can magnify a cell up to 2 million times its size. An example of such a microscope is the JEM-ARM200F microscope in the university of Texas , San Antonio.
Answer:
Explanation:
Cells start undergoing anaerobic respiration when energy requirement is high and there is not sufficient availability of oxygen to produce required energy .
For example , when we we run fast , energy requirement by muscle cell is high but available oxygen level is not sufficient so cells start anaerobic respiration which produces lactic acid and this product creates tire-ness.
For normal respiration , oxygen is required . If there is lack of oxygen , aerobic respiration is not possible .
In yeast cells , alcohol is produced by anaerobic respiration. Alcohol is not harmful . In muscle cells , lactic acid is produced which is harmful .
Answer:
Cell division
Explanation: Meosis is the result of an egg and sperm coming together to form a zygote, before the zygote becomes an actual zygote, it goes through cell divison to create the daughter cell w
Answer:
B !
Explanation:
I'm basing this off of a lesson I took two years ago, but the answer is B! The interior of Earth is rumored to be filled with magma as a way to have convection currents in itself, and to move the tectonic plates/ create the tectonic plates, if I remember correctly.
If i'm wrong I can still prove why it's not the other choices.
It's not A becuase when rock gets hotter, it rises, and when it cools, it sinks.
it's not C becuase it said "interior of the planet", which it may be referencing somewhere having to do to below the crust. as well, you need to cool rocks as to make it solid, not heated up rocks. but even then, mountains are made by the plates.
it's not D becuase glaciers are affected by climate change and occurrences the biosphere, not the interior of the planet.