Answer:
The options
A. Marsupial and placental mammals live in different habitats. Monkeys could only survive in the western islands and kangaroos in the eastern islands.
B. Monkeys and tree kangaroos compete against one another and cannot live together.
C. God specially created monkeys on one set of islands and kangaroos on the other.
D. The western islands were once connected to Asia and the eastern islands had been connected to Australia. The islands had never been connected to eachother.
The CORRECT ANSWER IS D.
D. The western islands were once connected to Asia and the eastern islands had been connected to Australia. The islands had never been connected to eachother.
Explanation:
Several forms of animals were restricted to several regions as a result of species that originated from pre-existing, nearby species. Since, the western islands were once all connected, they would possess or show the same species, which are also observed in the mainland in Asia. The eastern islands happened to be once all connected and had the same species, which is located in Australia
You can write about how or why Tylenol affects plants.
CD4+ t cells are activated by interaction between CD4+ and MHC II.
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What is MHC molecule?</h3>
- Antigens are foreign proteins that enter the host body through an infection. Antigens are generally high molecular weight proteins or polysaccharides. Viruses and bacteria contain antigen on their surface or inside the body.
- Epitope is the molecular region on the surface of the antigen which interact with the antibody binding site on the antigen. Epitopes are capable of stimulating an immune response so, these are also known as antigenic determinants. Binding between the receptor and epitopes occurs when they both fit together like a puzzle, that event is necessary to activate B-cell production of antibodies.
- A sizable region of vertebrate DNA called the major histocompatibility complex houses a group of closely related polymorphic genes that code for the cell surface proteins needed by the adaptive immune system. These MHC molecules are cell surface proteins.
- A controlled, efficient immune response to pathogens depends on CD4+T cells. After interacting with the antigen-MHC complex, naive CD4+T cells become activated and undergo specialized subtype differentiation that is largely influenced by the cytokine milieu of the microenvironment.
- Hence the correct answer is interaction between CD4+ and MHC II.
To learn more about MHC molecule refer to:
brainly.com/question/13051585
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The Answer is....... D.) 100%.
It's related because part of the survival of the fittest include the organism(s) to be able to survive in the environment they are in.
Hope this helps!! :-)<span />
