Answer:
Ectotherm, any so-called cold-blooded animal—that is, any animal whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface. The ectotherms include the fishes, amphibians, reptiles, and invertebrates.
Explanation:
Sweat is mainly water, but it also contains some salts. Its main function is to control body temperature. As the water in the sweat evaporates, the surface of the skin cools. An additional function of sweat is to help with gripping
Function and structure. Enzymes are very efficient catalysts for biochemical reactions. They speed up reactions by providing an alternative reaction pathway of lower activation energy. Like all catalysts, enzymes take part in the reaction - that is how they provide an alternative reaction pathway.
When an antigen is bound to a class i mhc molecule, it can stimulate a cytotoxic T cell
A transmembrane chain, which is produced by a class I MHC gene, plus a tiny extracellular protein known as 2-microglobulin make up class I MHC proteins. The gene that encodes the 2-microglobulin does not belong to the MHC gene cluster, and it does not traverse the membrane.
The cytotoxic T cell interacts with a virally infected cell via its T cell receptor and the MHC class one protein on the virally infected cell, which is the interaction between the MHC class one protein and the cytotoxic T cell. The identification of targets for destruction by a cytotoxic T cell depends on this interaction between the T cell receptor and MHC class one.
Learn more about cytotoxic T cell here;
brainly.com/question/27459085
#SPJ4
It was believed that a asteroid hit the Earth (specifically Mexico) when the asteroid hit it caused a freezing darkness due to dust and debris being kicked up by the asteroid . The dust and debris blocked the sunlight causing a temperature drop.