Answer:
Carbon dioxide, which is naturally in the atmosphere, dissolves into seawater. Water and carbon dioxide combine to form carbonic acid (H2CO3), a weak acid that breaks (or “dissociates”) into hydrogen ions (H+) and bicarbonate ions (HCO3-).
Explanation:
For centuries, many scientists hypothesized that birds were reptiles due to similarities in their anatomy, but there was no hard fossil evidence to support it. But in 1860, archaeologists discovered a fossil of a highly detailed Archaropteryx lithographica (a bird-like dinosaur), which filled the void of the “transitional species” that scientists needed to link birds and reptiles. Since then, many fossils of feathered dinosaurs have been found.
In the two-streams hypothesis, a model for the process of vision, information moves from the striate cortex to the parietal lobe by way of the morsel stream also called the where pathway. This pathway is involved with defining the spatial qualities of an object relative to the viewer.
Answer:
Explanation:
Antibodies are blood proteins produced to combine with and combat specific antigens and foreign substances such as bacteria and viruses.
An antibody which is also known as immunoglobulin is a Y-shaped structure that normally consists of 4 polypeptides which are 2 heavy chains and 2 light chains. This is the structure that makes it possible for antibodies to carry out their double functions which are - Antigen binding and Biological activity mediation.
Each role is executed by different parts of the antibody. That is, the fragment crystallizable region known as the fc region and the fragment antigen binding known as fab fragment.
The fab fragment is an area on the antibody that joins to antigens. It normally consists of one variable and one static domain of each of the light chain as well as the heavy one.
The fragment crystallizable region is the tail area of an antibody that combines with surface receptors and proteins of the complement system.This normally enables the antibodies to activate the immune system
