Answer:
The answer is option is A.
a photopsin is a protein of a photo pigment within cone photoreceptors.
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a specialized form of cell division occurs to form egg and sperm cells : Mitosis, Meiosis, Fertilization
What is Fertilization?
During fertilization, the main nucleus of an embryo is formed by the combination of a paternal sperm nucleus and a maternal egg nucleus. In reality, the process of fertilization in all organisms involves the union of the genetic material from two gametes, or separate sex cells, each of which has half the number of chromosomes that are typical for the species. In microorganisms and protozoans, the earliest type of fertilization involves the transfer of genetic material between two cells.
The fusing of the two gametes' membranes, which results in the creation of a channel that allows material to go from one cell to the other, is the first critical event in fertilization.
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The difference between the meanings of combining forms spondyl/o and vertebr/o is spondyl/o and vertebr/o both mean vertebra. There is no difference because they are both vertebra.
Spondyl/o is a combining form meaning vertebrae. The two combining forms for vertebrae bones of the spine, are vertebr/o and spondyl/o.
es casi correcto pero uno siempre debe esar distanciado porque mira el virus esta en el aire y cae en objetos por eso hay que lavarse las manos para que el virus no te entre en la partes vitales como la nariz hay que usar cubrebocas
Explanation:
te lo dice sans el esqueleto es más cierto que Cristo existe
The Earth was first considered habitable when we discovered that it was Microbial organisms that started the process. I would go with D.