I believe the answer is "A. almost zero."
Even though you haven't put the rest of the question, I assume it asks what the "weight" of an electron is in comparison to neutrons and protons.
Answer:
It is water based but contains both small and large molecules, giving it density. It has several functions, including physical support of the cell, preventing collapse, as well as degrading nutrients, transport of small molecules, and containing the ribosomes responsible for protein synthesis.
Answer:
Sand
Explanation:
Soil particles between 0.1 and 2 mm are considered sand. The range to be considered sand is 0.05 to 0.2 mm.
In the case of silt, it includes particles with a diameter between 0.005 and 0.02.
On the other hand, clay has values lower than 0.002.
Finally marl, does not depend on its size, but on its composition.
Answer:
Any ions like H+, potassium ion, sodium ions or even molecules like glucose can be moved by active transport as long as the cell have pumps specific to the molecules that uses energy to pump the molecules from a region of lower concentration to a region of higher concentration.