Answer:
La unidad para medir las células es la micra (m ) la cual equivale a la milésima parte de un milímetro (1m = 0,001mm).
Explanation:
Passive transport is the movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. On the other hand, active transport <span>is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration which needs energy input. </span>
I believe that what is meant with the phrase "older explanation" is none other that superstition. Therefore, I will give you one superstitious belief which is now explained by science.
In Southeast Asia, people used to believe that St. Elmo's fire appears in remote areas because a bloody battle occured in that place leaving disembodied souls of the dead wandering there in the night and even in sunshine!
For generations, many people believed that this is a fact and some even say that these apparitions are diabolical or demonic in nature. So often, caution is advised to people whenever a ball of fire appears out in the open.
However, recent breakthroughs in the 21st century helped scientists to explain this mysterious phenomena. They found out that St. Elmo's fire is actually plasma, nothing special. Now, plasma is considered one of the states of matter! But mind you, it still does not explain why St. Elmo's fire seems to have a mind of its own!
Convection is a type of heat transfer that occurs
in molecules. It refers to the collective movement of molecules within fluids
and rheids (non-molten solids). Convection happens through the process of
diffusion, advection, or the combination of both. Therefore solids cannot
undergo this process because bulk current flows and significant diffusion
cannot take place within the molecules of solids. Aside from this, solids have
bigger molecules that are too compact and cannot move freely unlike fluids do.
<span>
Convection can best be seen through an experiment
when a glass of water is exposed to a heat source. The change in temperature in
the glass causes warm fluid to move into cooler areas which causes it to boil
and bubble. </span>
Answer:
(1) Translation begins when a ribosome (gray) docks on a start codon (red) of an mRNA molecule in the cytoplasm. (2) Next, tRNA molecules attached to amino acids (spheres) dock at the corresponding triplet codon sequence on the mRNA molecule.
Explanation:
1st one.
