One of the reasons the plasma membrane can have<span> selective permeability</span><span> it's because it's composed by a bi-layer of phospholipids.
The interaction between them and other molecules will influence how these molecules will cross the membrane. If the molecule it's </span>hydrophobic it can easily cross, if it's polar molecules and ions( hydrophilic), they cannot cross easily.
In unicellular organisms, the process of mitosis serves as a method or form of asexual reproduction, as organisms that are unicellular and are typically prokaryotic undergo mitosis to essentially duplicate and make additional offspring that are genetically identical clones as that of the original parent cell. Mitosis in multicellular organisms serves to replace lost, specifically damaged tissue of the organism, it also is crucial for the growth and development of the organism, as it is this particular portion of the cell cycle, when cells after growing and having their DNA duplicated can they separate and produce more and more cells.
Answer:
Speciation is the method by which unique species evolve from a common ancestor. In this case, two of these species that split from a common ancestor interbred and created a hybrid. This hybrid was apparently stronger and possibly better adapted to the environment, which led to extinction of a species formed by the initial speciation event.
Phylum: Arthropod, Ecdysozoa
Class: Merostomata
The Answer is "<span> the middle muscular </span>layer".
The middle muscular layer of the uterus is also known as myometrium.
There are three layers of the uterus;
1) the outer layer known as perimetrium
2) the middle layer that is myometrium
3) the inner layer which is known as endometrium.
The middle layer is responsible for the uterine contraction and as a result, one have menstrual cramps.
