Answer:
There are 8 electrons in the outer ring, and has to react with 8 or fewer electrons to form a stable molecule.
Explanation:
The outer-most orbits of silicon contains a maximum of eight (8) electrons. It requires 8 of fewer electrons to form a stable molecule.
Characteristics of Lancelets:
Small
Elongated
Marine invertebrate
Lacks a jaw
No sense organs
Has a notochord
Example: Lamprey
Characteristics of Tunicates:
Marine invertebrate
Has an outer coat that is rubbery or hard
Has two siphons
Examples: sea squirts, salps
I hope this is the answer that you were looking for.
Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites, and natural products. A more general name for this class of material is biological materials.
Cellular immunity kills pathogens inside the cell, whereas humoral immunity destroys pathogens outside the cell.
<h3>What is the difference between Cellular and Humoral immunity?</h3>
The main difference between humoral and cell-mediated immunity is that humoral immunity produces antigen-specific antibodies, whereas cell-mediated immunity does not produce antigen-specific antibodies. The cellular immunity destroys pathogens and harm microbes that are present inside the cell, whereas humoral immunity kills pathogens outside the cell.
So we can conclude that cellular immunity kills pathogens inside the cell, whereas humoral immunity destroys pathogens outside the cell.
Learn more about immunity here: brainly.com/question/6612564
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