It helped be find out I didn't really want a job in the scientific field.
Answer:
there are tree hypothesis
Explanation:
There are several mechanisms by which multicellularity could have evolved:
1. A group of cells were added in a slug-shaped mass called grex, which was moved as a multicellular unit, as the Myxomycota do.
2. The primitive cell suffered an incomplete division of the cell nucleus generating a cell with multiple nuclei or syncytium. Next, membranes formed around each nucleus and the space was occupied by organelles. This resulted in a group of cells connected in an organism, an observable mechanism in Drosophila.
3. Daughter cells did not separate after cell division, resulting in a conglomeration of identical cells in an organism, which later developed specialized functions. This is observed in embryos of plants, animals and colonial cyanoflagellates.
Should read more about the topic here, google it:
<em>Multicellular development in a choanoflagellate; Stephen R. Fairclough, Mark J. Dayel and Nicole King
</em>
<em>In a Single-Cell Predator, Clues to the Animal Kingdom’s Birth</em>
Answer:
The sun, oxygen, and water.
Explanation:
The correct option is IPSILATERAL. The anatomical path of a reflex is called reflex arc. An ipsilateral reflex arc is one in which the motor output occur on the same side of the body where the stimulus is detected. Apart from ipsilateral reflex arc, there are other two types, which are conlateral and intersegmental reflex arc.
Answer:
100,000 TMV
Explanation:
Length of one TMV is 300nm. Length of paper clip is 3.0cm. First step is to convert either value to match the units of other.
So 3.0cm to nm is 3.0 * 10^7 = 30,000,000nm
SO now it becomes simple because we just divide the total length by length of TMV to find number of particles that can fit:
30,000,000/300 = 100,000 TMV